Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle
Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treat...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Zhu, Xiaojun [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016transfer abstract |
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| Umfang: |
10 |
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| Übergeordnetes Werk: |
Enthalten in: Using a bacterial fucose-rich polysaccharide as encapsulation material of bioactive compounds - Lourenço, Sofia C. ELSEVIER, 2017transfer abstract, Amsterdam [u.a.] |
|---|---|
| Übergeordnetes Werk: |
volume:160 ; year:2016 ; day:15 ; month:04 ; pages:1-10 ; extent:10 |
| Links: |
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| DOI / URN: |
10.1016/j.coal.2016.03.011 |
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ELV035123931 |
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| 245 | 1 | 0 | |a Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle |
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| 520 | |a Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. | ||
| 520 | |a Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. | ||
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10.1016/j.coal.2016.03.011 doi GBVA2016005000009.pica (DE-627)ELV035123931 (ELSEVIER)S0166-5162(16)30062-3 DE-627 ger DE-627 rakwb eng 550 620 660 550 DE-600 620 DE-600 660 DE-600 540 VZ 570 VZ 570 610 VZ 58.30 bkl 50.22 bkl 44.09 bkl Zhu, Xiaojun verfasserin aut Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle 2016transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Cai, Jingong oth Liu, Weixin oth Lu, Xiancai oth Enthalten in Elsevier Lourenço, Sofia C. ELSEVIER Using a bacterial fucose-rich polysaccharide as encapsulation material of bioactive compounds 2017transfer abstract Amsterdam [u.a.] (DE-627)ELV019980760 volume:160 year:2016 day:15 month:04 pages:1-10 extent:10 https://doi.org/10.1016/j.coal.2016.03.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.30 Biotechnologie VZ 50.22 Sensorik VZ 44.09 Medizintechnik VZ AR 160 2016 15 0415 1-10 10 045F 550 |
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10.1016/j.coal.2016.03.011 doi GBVA2016005000009.pica (DE-627)ELV035123931 (ELSEVIER)S0166-5162(16)30062-3 DE-627 ger DE-627 rakwb eng 550 620 660 550 DE-600 620 DE-600 660 DE-600 540 VZ 570 VZ 570 610 VZ 58.30 bkl 50.22 bkl 44.09 bkl Zhu, Xiaojun verfasserin aut Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle 2016transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Cai, Jingong oth Liu, Weixin oth Lu, Xiancai oth Enthalten in Elsevier Lourenço, Sofia C. ELSEVIER Using a bacterial fucose-rich polysaccharide as encapsulation material of bioactive compounds 2017transfer abstract Amsterdam [u.a.] (DE-627)ELV019980760 volume:160 year:2016 day:15 month:04 pages:1-10 extent:10 https://doi.org/10.1016/j.coal.2016.03.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.30 Biotechnologie VZ 50.22 Sensorik VZ 44.09 Medizintechnik VZ AR 160 2016 15 0415 1-10 10 045F 550 |
| allfields_unstemmed |
10.1016/j.coal.2016.03.011 doi GBVA2016005000009.pica (DE-627)ELV035123931 (ELSEVIER)S0166-5162(16)30062-3 DE-627 ger DE-627 rakwb eng 550 620 660 550 DE-600 620 DE-600 660 DE-600 540 VZ 570 VZ 570 610 VZ 58.30 bkl 50.22 bkl 44.09 bkl Zhu, Xiaojun verfasserin aut Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle 2016transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Cai, Jingong oth Liu, Weixin oth Lu, Xiancai oth Enthalten in Elsevier Lourenço, Sofia C. ELSEVIER Using a bacterial fucose-rich polysaccharide as encapsulation material of bioactive compounds 2017transfer abstract Amsterdam [u.a.] (DE-627)ELV019980760 volume:160 year:2016 day:15 month:04 pages:1-10 extent:10 https://doi.org/10.1016/j.coal.2016.03.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.30 Biotechnologie VZ 50.22 Sensorik VZ 44.09 Medizintechnik VZ AR 160 2016 15 0415 1-10 10 045F 550 |
| allfieldsGer |
10.1016/j.coal.2016.03.011 doi GBVA2016005000009.pica (DE-627)ELV035123931 (ELSEVIER)S0166-5162(16)30062-3 DE-627 ger DE-627 rakwb eng 550 620 660 550 DE-600 620 DE-600 660 DE-600 540 VZ 570 VZ 570 610 VZ 58.30 bkl 50.22 bkl 44.09 bkl Zhu, Xiaojun verfasserin aut Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle 2016transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Cai, Jingong oth Liu, Weixin oth Lu, Xiancai oth Enthalten in Elsevier Lourenço, Sofia C. ELSEVIER Using a bacterial fucose-rich polysaccharide as encapsulation material of bioactive compounds 2017transfer abstract Amsterdam [u.a.] (DE-627)ELV019980760 volume:160 year:2016 day:15 month:04 pages:1-10 extent:10 https://doi.org/10.1016/j.coal.2016.03.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.30 Biotechnologie VZ 50.22 Sensorik VZ 44.09 Medizintechnik VZ AR 160 2016 15 0415 1-10 10 045F 550 |
| allfieldsSound |
10.1016/j.coal.2016.03.011 doi GBVA2016005000009.pica (DE-627)ELV035123931 (ELSEVIER)S0166-5162(16)30062-3 DE-627 ger DE-627 rakwb eng 550 620 660 550 DE-600 620 DE-600 660 DE-600 540 VZ 570 VZ 570 610 VZ 58.30 bkl 50.22 bkl 44.09 bkl Zhu, Xiaojun verfasserin aut Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle 2016transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. Cai, Jingong oth Liu, Weixin oth Lu, Xiancai oth Enthalten in Elsevier Lourenço, Sofia C. ELSEVIER Using a bacterial fucose-rich polysaccharide as encapsulation material of bioactive compounds 2017transfer abstract Amsterdam [u.a.] (DE-627)ELV019980760 volume:160 year:2016 day:15 month:04 pages:1-10 extent:10 https://doi.org/10.1016/j.coal.2016.03.011 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 58.30 Biotechnologie VZ 50.22 Sensorik VZ 44.09 Medizintechnik VZ AR 160 2016 15 0415 1-10 10 045F 550 |
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Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle |
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Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. |
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Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. |
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Stability and mobility of organic matter (OM) in shale is of great significance for the carbon cycle and petroleum exploration and exploitation. To examine the stability and mobility of OM occurrence in shales, clay-sized fractions (<2μm) were separated from shales physically and chemically treated with different reagents. These fractions were followed by pyrolysis and measurements of specific surface area (SSA) and Fourier transform infrared spectrophotometry (FTIR). It is revealed that after wet chemical oxidation and organic solvent extraction, there exist: a) changes in total organic carbon (TOC), hydrogen index (HI) and oxygen index (OI); b) appreciable decrease in absorption intensity of –CH2– stretching vibration bands at 2924 and 2853cm−1; and c) dramatic increase of SSAs after wet chemical oxidation. These characteristics suggest that the TOC in the clay-sized fraction can be categorized into physical mobile-OC (PmOC), chemical mobile-OC (CmOC) and stable-OC (SOC), which account for 43.3%, 17.1% and 39.6% of TOC on average in the studied samples, respectively. The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation. |
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The OM in the clay-sized fraction mainly occurs on mineral internal surface, and the occurrence of OM determines the stability and mobility of OC. The PmOC mainly accumulates in the pores and at the mouth and/or edge of the interlayer spaces of clay minerals, the CmOC chiefly adsorbs on the mineral external surface, and the SOC mainly occurs on the mineral internal surface. These occurrence characteristics of different OCs indicate that the mobility and stability of OM occurrence in a sample have different levels. The occurrence of stable and mobile OM in the clay-sized fraction of shale as investigated can improve the understanding of the occurrence of OM in shales, and provide a new insight for carbon cycle research and petroleum exploration and exploitation.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Cai, Jingong</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Liu, Weixin</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Lu, Xiancai</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="n">Elsevier</subfield><subfield code="a">Lourenço, Sofia C. 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