Natural gas hydrates - from the microstructure towards a geological understanding

Natural gas hydrates, mineralogy, crystal structures, microstructure, grain growth, coexistence, Gulf of Mexico, Black Sea, seepage, clathrate hydrates, sI, sII, hydrocarbons, methane, tomography, Bragg diffraction. - The dissertation addresses mineralogical characteristics of natural gas hydrates f...
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Autor*in:	Klapp, Stephan A. [verfasserIn]
Hochschulschrift:	Bremen, Univ., Diss., 2009

Format:	E-Book
Sprache:	Englisch

Erschienen:	2009

Formangabe:	Hochschulschrift

Umfang:	Online-Ressource (PDF-Datei: 178 S., 33,5 MB)

Weitere Ausgabe:	Erscheint auch als Druck-Ausgabe Klapp, Stephan A.: Natural gas hydrates - from the microstructure towards a geological understanding - 2009

Links:	Link aufrufen Volltext Volltext Volltext Volltext

DOI / URN:	urn:nbn:de:gbv:46-diss000116186

Katalog-ID:	612811166

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author_variant	s a k sa sak
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allfields	998421820 DE-101 urn:nbn:de:gbv:46-diss000116186 urn (DE-627)612811166 (DE-599)GBV612811166 (OCoLC)643154437 DE-627 ger DE-627 rakwb eng XA-DE 550 SEPA 550 DNB Klapp, Stephan A. verfasserin aut Natural gas hydrates - from the microstructure towards a geological understanding von Stephan A. Klapp 2009 Online-Ressource (PDF-Datei: 178 S., 33,5 MB) Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bremen, Univ., Diss., 2009 Natural gas hydrates, mineralogy, crystal structures, microstructure, grain growth, coexistence, Gulf of Mexico, Black Sea, seepage, clathrate hydrates, sI, sII, hydrocarbons, methane, tomography, Bragg diffraction. - The dissertation addresses mineralogical characteristics of natural gas hydrates from cold seeps in the Gulf of Mexico and the eastern Black Sea. The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ... Natural gas hydrates Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Bremen uvp Erscheint auch als Druck-Ausgabe Klapp, Stephan A. Natural gas hydrates - from the microstructure towards a geological understanding 2009 VIII, 170 S (DE-627)612810976 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext http://elib.suub.uni-bremen.de/diss/docs/00011618.pdf Verlag kostenfrei Volltext http://d-nb.info/998421820/34 Langzeitarchivierung Nationalbibliothek Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 BO 045F 550 20 01 0084 1180764862 x 11-09-10 21 01 0046 1102709883 zza 13-11-09 22 01 0018 1180963105 SUBolrd xu 11-09-10 23 01 0830 1181054656 olr-d x 11-09-10 30 01 0104 1181117453 z 11-09-10 40 01 0007 1181176379 xsn 11-09-10 60 01 0705 1181268311 OLRD z 11-09-10 63 01 3401 1595662979 ORD x 21-01-16 70 01 0089 1228063591 zdo 20-02-11 105 01 0841 1596476109 z 21-01-16 110 01 3110 1181361362 x 11-09-10 132 01 0959 1497530717 OLR-DISS x 11-08-14 151 01 0546 3594085112 OLR-ODISS z 13-02-20 161 01 0960 1597421928 ORD x 28-01-16 293 01 3293 1597844551 ORD xf 28-01-16 370 01 4370 1181414881 x 11-09-10 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 LF 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 00 DE-46 99 07 40 00 DE-7 00 (DE-627)625057384 VRE 400 Lagerstätteninhalt und dessen Eigenschaften {Kohlenwasserstofflagerstätten} 40 00 DE-7 01 (DE-627)625053656 VHC 000 Sonstige Mineralarten im Allgemeinen 40 00 DE-7 02 (DE-627)625053060 VGA 300 Kristallstrukturen 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2010-09-11:05:41:15
spelling	998421820 DE-101 urn:nbn:de:gbv:46-diss000116186 urn (DE-627)612811166 (DE-599)GBV612811166 (OCoLC)643154437 DE-627 ger DE-627 rakwb eng XA-DE 550 SEPA 550 DNB Klapp, Stephan A. verfasserin aut Natural gas hydrates - from the microstructure towards a geological understanding von Stephan A. Klapp 2009 Online-Ressource (PDF-Datei: 178 S., 33,5 MB) Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Bremen, Univ., Diss., 2009 Natural gas hydrates, mineralogy, crystal structures, microstructure, grain growth, coexistence, Gulf of Mexico, Black Sea, seepage, clathrate hydrates, sI, sII, hydrocarbons, methane, tomography, Bragg diffraction. - The dissertation addresses mineralogical characteristics of natural gas hydrates from cold seeps in the Gulf of Mexico and the eastern Black Sea. The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ... Natural gas hydrates Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Bremen uvp Erscheint auch als Druck-Ausgabe Klapp, Stephan A. Natural gas hydrates - from the microstructure towards a geological understanding 2009 VIII, 170 S (DE-627)612810976 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext http://elib.suub.uni-bremen.de/diss/docs/00011618.pdf Verlag kostenfrei Volltext http://d-nb.info/998421820/34 Langzeitarchivierung Nationalbibliothek Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 BO 045F 550 20 01 0084 1180764862 x 11-09-10 21 01 0046 1102709883 zza 13-11-09 22 01 0018 1180963105 SUBolrd xu 11-09-10 23 01 0830 1181054656 olr-d x 11-09-10 30 01 0104 1181117453 z 11-09-10 40 01 0007 1181176379 xsn 11-09-10 60 01 0705 1181268311 OLRD z 11-09-10 63 01 3401 1595662979 ORD x 21-01-16 70 01 0089 1228063591 zdo 20-02-11 105 01 0841 1596476109 z 21-01-16 110 01 3110 1181361362 x 11-09-10 132 01 0959 1497530717 OLR-DISS x 11-08-14 151 01 0546 3594085112 OLR-ODISS z 13-02-20 161 01 0960 1597421928 ORD x 28-01-16 293 01 3293 1597844551 ORD xf 28-01-16 370 01 4370 1181414881 x 11-09-10 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 LF 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 00 DE-46 99 07 40 00 DE-7 00 (DE-627)625057384 VRE 400 Lagerstätteninhalt und dessen Eigenschaften {Kohlenwasserstofflagerstätten} 40 00 DE-7 01 (DE-627)625053656 VHC 000 Sonstige Mineralarten im Allgemeinen 40 00 DE-7 02 (DE-627)625053060 VGA 300 Kristallstrukturen 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2010-09-11:05:41:15
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The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ... Natural gas hydrates Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Bremen uvp Erscheint auch als Druck-Ausgabe Klapp, Stephan A. Natural gas hydrates - from the microstructure towards a geological understanding 2009 VIII, 170 S (DE-627)612810976 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext http://elib.suub.uni-bremen.de/diss/docs/00011618.pdf Verlag kostenfrei Volltext http://d-nb.info/998421820/34 Langzeitarchivierung Nationalbibliothek Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 BO 045F 550 20 01 0084 1180764862 x 11-09-10 21 01 0046 1102709883 zza 13-11-09 22 01 0018 1180963105 SUBolrd xu 11-09-10 23 01 0830 1181054656 olr-d x 11-09-10 30 01 0104 1181117453 z 11-09-10 40 01 0007 1181176379 xsn 11-09-10 60 01 0705 1181268311 OLRD z 11-09-10 63 01 3401 1595662979 ORD x 21-01-16 70 01 0089 1228063591 zdo 20-02-11 105 01 0841 1596476109 z 21-01-16 110 01 3110 1181361362 x 11-09-10 132 01 0959 1497530717 OLR-DISS x 11-08-14 151 01 0546 3594085112 OLR-ODISS z 13-02-20 161 01 0960 1597421928 ORD x 28-01-16 293 01 3293 1597844551 ORD xf 28-01-16 370 01 4370 1181414881 x 11-09-10 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 LF 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 00 DE-46 99 07 40 00 DE-7 00 (DE-627)625057384 VRE 400 Lagerstätteninhalt und dessen Eigenschaften {Kohlenwasserstofflagerstätten} 40 00 DE-7 01 (DE-627)625053656 VHC 000 Sonstige Mineralarten im Allgemeinen 40 00 DE-7 02 (DE-627)625053060 VGA 300 Kristallstrukturen 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2010-09-11:05:41:15
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The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ... Natural gas hydrates Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Bremen uvp Erscheint auch als Druck-Ausgabe Klapp, Stephan A. Natural gas hydrates - from the microstructure towards a geological understanding 2009 VIII, 170 S (DE-627)612810976 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext http://elib.suub.uni-bremen.de/diss/docs/00011618.pdf Verlag kostenfrei Volltext http://d-nb.info/998421820/34 Langzeitarchivierung Nationalbibliothek Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 BO 045F 550 20 01 0084 1180764862 x 11-09-10 21 01 0046 1102709883 zza 13-11-09 22 01 0018 1180963105 SUBolrd xu 11-09-10 23 01 0830 1181054656 olr-d x 11-09-10 30 01 0104 1181117453 z 11-09-10 40 01 0007 1181176379 xsn 11-09-10 60 01 0705 1181268311 OLRD z 11-09-10 63 01 3401 1595662979 ORD x 21-01-16 70 01 0089 1228063591 zdo 20-02-11 105 01 0841 1596476109 z 21-01-16 110 01 3110 1181361362 x 11-09-10 132 01 0959 1497530717 OLR-DISS x 11-08-14 151 01 0546 3594085112 OLR-ODISS z 13-02-20 161 01 0960 1597421928 ORD x 28-01-16 293 01 3293 1597844551 ORD xf 28-01-16 370 01 4370 1181414881 x 11-09-10 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 LF 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 00 DE-46 99 07 40 00 DE-7 00 (DE-627)625057384 VRE 400 Lagerstätteninhalt und dessen Eigenschaften {Kohlenwasserstofflagerstätten} 40 00 DE-7 01 (DE-627)625053656 VHC 000 Sonstige Mineralarten im Allgemeinen 40 00 DE-7 02 (DE-627)625053060 VGA 300 Kristallstrukturen 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2010-09-11:05:41:15
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The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ... Natural gas hydrates Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Bremen uvp Erscheint auch als Druck-Ausgabe Klapp, Stephan A. Natural gas hydrates - from the microstructure towards a geological understanding 2009 VIII, 170 S (DE-627)612810976 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext http://elib.suub.uni-bremen.de/diss/docs/00011618.pdf Verlag kostenfrei Volltext http://d-nb.info/998421820/34 Langzeitarchivierung Nationalbibliothek Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 Resolving-System Volltext GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP SSG-OPC-GGO GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 BO 045F 550 20 01 0084 1180764862 x 11-09-10 21 01 0046 1102709883 zza 13-11-09 22 01 0018 1180963105 SUBolrd xu 11-09-10 23 01 0830 1181054656 olr-d x 11-09-10 30 01 0104 1181117453 z 11-09-10 40 01 0007 1181176379 xsn 11-09-10 60 01 0705 1181268311 OLRD z 11-09-10 63 01 3401 1595662979 ORD x 21-01-16 70 01 0089 1228063591 zdo 20-02-11 105 01 0841 1596476109 z 21-01-16 110 01 3110 1181361362 x 11-09-10 132 01 0959 1497530717 OLR-DISS x 11-08-14 151 01 0546 3594085112 OLR-ODISS z 13-02-20 161 01 0960 1597421928 ORD x 28-01-16 293 01 3293 1597844551 ORD xf 28-01-16 370 01 4370 1181414881 x 11-09-10 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 LF 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 21 00 DE-46 99 07 40 00 DE-7 00 (DE-627)625057384 VRE 400 Lagerstätteninhalt und dessen Eigenschaften {Kohlenwasserstofflagerstätten} 40 00 DE-7 01 (DE-627)625053656 VHC 000 Sonstige Mineralarten im Allgemeinen 40 00 DE-7 02 (DE-627)625053060 VGA 300 Kristallstrukturen 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2010-09-11:05:41:15
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title_sort	natural gas hydrates - from the microstructure towards a geological understanding
title_auth	Natural gas hydrates - from the microstructure towards a geological understanding
abstract	Natural gas hydrates, mineralogy, crystal structures, microstructure, grain growth, coexistence, Gulf of Mexico, Black Sea, seepage, clathrate hydrates, sI, sII, hydrocarbons, methane, tomography, Bragg diffraction. - The dissertation addresses mineralogical characteristics of natural gas hydrates from cold seeps in the Gulf of Mexico and the eastern Black Sea. The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ...
abstractGer	Natural gas hydrates, mineralogy, crystal structures, microstructure, grain growth, coexistence, Gulf of Mexico, Black Sea, seepage, clathrate hydrates, sI, sII, hydrocarbons, methane, tomography, Bragg diffraction. - The dissertation addresses mineralogical characteristics of natural gas hydrates from cold seeps in the Gulf of Mexico and the eastern Black Sea. The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ...
abstract_unstemmed	Natural gas hydrates, mineralogy, crystal structures, microstructure, grain growth, coexistence, Gulf of Mexico, Black Sea, seepage, clathrate hydrates, sI, sII, hydrocarbons, methane, tomography, Bragg diffraction. - The dissertation addresses mineralogical characteristics of natural gas hydrates from cold seeps in the Gulf of Mexico and the eastern Black Sea. The investigated properties are the crystal structure, the crystallite sizes and size distributions, the compositions of the hydrate-forming gases, the hydrate porosity as well as the grain boundary networks. That was accomplished using X-ray diffraction, gas chromatography, Raman-spectroscopy, and scanning electron microscopy. "Bragg tomography" was applied for crystallite size measurements of hydrates.Computer tomography using Synchrotron radiation was used for the first time for gas hydrate inspections on a micro-scale. The crystallite sizes of natural hydrates are governed by the velocity of crystal growth, therefore time is an important factor. One important result of this thesis is that the gas hydrate crystallite size evolution is also affected by more factors, which are impurities in the grain boundary network such as oil and salts. Gas hydrates from the northern Gulf of Mexico crystallize to structure type II hydrate (sII) from methane and a fraction of up to 30 mol% of C2 through C5 hydrocarbons. One important result of this thesis is that the lower molecular mobility of C2-C5 hydrocarbons compared to methane incorporated in hydrates is displayed phenomenologically by dense, non-porous surfaces of the gas hydrates on a micrometer scale. Instead, hydrates which were formed from volatiles like methane, often crystallizing to sI, are characterized by ...
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title_short	Natural gas hydrates - from the microstructure towards a geological understanding
url	http://nbn-resolving.de/urn:nbn:de:gbv:46-diss000116186 http://elib.suub.uni-bremen.de/diss/docs/00011618.pdf http://d-nb.info/998421820/34
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Natural gas hydrates - from the microstructure towards a geological understanding

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