Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge
Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Liu, Jing-Lin [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022transfer abstract |
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| Schlagwörter: |
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| Umfang: |
14 |
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| Übergeordnetes Werk: |
Enthalten in: External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs - Dedhia, Kavita ELSEVIER, 2018, official journal of the International Association for Hydrogen Energy, New York, NY [u.a.] |
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| Übergeordnetes Werk: |
volume:47 ; year:2022 ; number:26 ; day:26 ; month:03 ; pages:12841-12854 ; extent:14 |
| Links: |
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| DOI / URN: |
10.1016/j.ijhydene.2022.02.041 |
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| 245 | 1 | 0 | |a Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge |
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| 520 | |a Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. | ||
| 520 | |a Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. | ||
| 650 | 7 | |a Liquid discharge |2 Elsevier | |
| 650 | 7 | |a Kinetic simulation |2 Elsevier | |
| 650 | 7 | |a Ethanol reforming |2 Elsevier | |
| 650 | 7 | |a Microwave plasma |2 Elsevier | |
| 650 | 7 | |a Plasma chemistry |2 Elsevier | |
| 700 | 1 | |a Zhu, Tong Hui |4 oth | |
| 700 | 1 | |a Sun, Bing |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier |a Dedhia, Kavita ELSEVIER |t External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs |d 2018 |d official journal of the International Association for Hydrogen Energy |g New York, NY [u.a.] |w (DE-627)ELV000127019 |
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10.1016/j.ijhydene.2022.02.041 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001709.pica (DE-627)ELV057162565 (ELSEVIER)S0360-3199(22)00592-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Liu, Jing-Lin verfasserin aut Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge 2022transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Liquid discharge Elsevier Kinetic simulation Elsevier Ethanol reforming Elsevier Microwave plasma Elsevier Plasma chemistry Elsevier Zhu, Tong Hui oth Sun, Bing oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 https://doi.org/10.1016/j.ijhydene.2022.02.041 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 47 2022 26 26 0326 12841-12854 14 |
| spelling |
10.1016/j.ijhydene.2022.02.041 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001709.pica (DE-627)ELV057162565 (ELSEVIER)S0360-3199(22)00592-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Liu, Jing-Lin verfasserin aut Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge 2022transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Liquid discharge Elsevier Kinetic simulation Elsevier Ethanol reforming Elsevier Microwave plasma Elsevier Plasma chemistry Elsevier Zhu, Tong Hui oth Sun, Bing oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 https://doi.org/10.1016/j.ijhydene.2022.02.041 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 47 2022 26 26 0326 12841-12854 14 |
| allfields_unstemmed |
10.1016/j.ijhydene.2022.02.041 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001709.pica (DE-627)ELV057162565 (ELSEVIER)S0360-3199(22)00592-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Liu, Jing-Lin verfasserin aut Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge 2022transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Liquid discharge Elsevier Kinetic simulation Elsevier Ethanol reforming Elsevier Microwave plasma Elsevier Plasma chemistry Elsevier Zhu, Tong Hui oth Sun, Bing oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 https://doi.org/10.1016/j.ijhydene.2022.02.041 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 47 2022 26 26 0326 12841-12854 14 |
| allfieldsGer |
10.1016/j.ijhydene.2022.02.041 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001709.pica (DE-627)ELV057162565 (ELSEVIER)S0360-3199(22)00592-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Liu, Jing-Lin verfasserin aut Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge 2022transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Liquid discharge Elsevier Kinetic simulation Elsevier Ethanol reforming Elsevier Microwave plasma Elsevier Plasma chemistry Elsevier Zhu, Tong Hui oth Sun, Bing oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 https://doi.org/10.1016/j.ijhydene.2022.02.041 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 47 2022 26 26 0326 12841-12854 14 |
| allfieldsSound |
10.1016/j.ijhydene.2022.02.041 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001709.pica (DE-627)ELV057162565 (ELSEVIER)S0360-3199(22)00592-4 DE-627 ger DE-627 rakwb eng 610 VZ 44.94 bkl Liu, Jing-Lin verfasserin aut Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge 2022transfer abstract 14 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. Liquid discharge Elsevier Kinetic simulation Elsevier Ethanol reforming Elsevier Microwave plasma Elsevier Plasma chemistry Elsevier Zhu, Tong Hui oth Sun, Bing oth Enthalten in Elsevier Dedhia, Kavita ELSEVIER External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs 2018 official journal of the International Association for Hydrogen Energy New York, NY [u.a.] (DE-627)ELV000127019 volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 https://doi.org/10.1016/j.ijhydene.2022.02.041 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 44.94 Hals-Nasen-Ohrenheilkunde VZ AR 47 2022 26 26 0326 12841-12854 14 |
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Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 |
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Enthalten in External auditory canal: Inferior, posterior-inferior, and anterior canal wall overhangs New York, NY [u.a.] volume:47 year:2022 number:26 day:26 month:03 pages:12841-12854 extent:14 |
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understanding the chemical kinetics for plasma in liquid: reaction mechanism of ethanol reforming in microwave discharge |
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Understanding the chemical kinetics for plasma in liquid: Reaction mechanism of ethanol reforming in microwave discharge |
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Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. |
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Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. |
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Toward understanding the chemical nature of fuel reforming in liquid phase discharge, a novel kinetic model with being governed by both mass and energy equations was developed for the first time. The model reliability was verified by experimental results for ethanol reforming with water by microwave discharge plasma in liquid (MDPL). The reaction kinetics of ethanol in MDPL were revealed quantitatively. It illustrated that the key reactive species in the MDPL were H, OH, HCO, C and CxHy radicals, which induced the productions of H2, CO and hydrocarbons (CH4 and C2H2). The rate determining steps for ethanol conversion were identified as dehydrogenizing ethanol to C2H5O firstly, and then splitting to CH2O and CH3 radicals. Those two species of CH2O and CH3 governed the formation of CO and hydrocarbons respectively. In addition, the kinetic control mechanism for ethanol reforming in MDPL determined that ethanol was converted by mixed routes of pyrolysis and steam reforming at low initial ethanol molar concentration in liquid ( C e t h L 50%. Water in the liquid supplied OH radical promoting the conversion of CxHy to CO, thereby it regulated the reaction pathway transition between pyrolysis and steam reforming. The energy transfer pathway for discharge power to chemical energy, very important but never discussed for plasma reforming in liquid, was also simulated. It revealed that a very competitive energy efficiency of ∼85% for ethanol reforming was achieved in the MDPL. |
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