Characteristics of methane hydrate formation in carbon nanofluids
When methane hydrate is formed artificially by simply reversing its process of natural generation, the amount of methane gas consumed by hydrate formation is fairly low, which is problematic for its large scale synthesis and application. Therefore, this study examined methods for increasing the amou...
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Published in | Journal of industrial and engineering chemistry (Seoul, Korea) Vol. 18; no. 1; pp. 443 - 448 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
25.01.2012
한국공업화학회 |
Subjects | |
Online Access | Get full text |
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Summary: | When methane hydrate is formed artificially by simply reversing its process of natural generation, the amount of methane gas consumed by hydrate formation is fairly low, which is problematic for its large scale synthesis and application. Therefore, this study examined methods for increasing the amount of gas consumed by adding MWCNTs (multi-walled carbon nanotubes) and OMWCNTs (oxidized multi-walled carbon nanotubes). The surfaces of the MWCNTs were oxidized chemically, and dispersed uniformly in distilled water after a dispersion operation. The amount of methane gas consumed during the formation of methane hydrate in the oxidized carbon nanofluid was approximately 4.5 times higher than that in distilled water. The hydrate-nanocarbon fluid phase boundary line was shifted to the right side of the hydrate-pure water phase boundary line in the pressure–temperature phase diagram. The carbon nanofluid system accelerated the rate of methane hydrate formation at low subcooling temperatures (<8
K). |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 G704-000711.2012.18.1.016 |
ISSN: | 1226-086X 1876-794X |
DOI: | 10.1016/j.jiec.2011.11.045 |