Developing highly efficient methane (CH4) hydrate storage methods and understanding the hydrate dissociation kinetics can contribute to advancing CH4 gas storage and transport. The effects of tetrabutylammonium bromide (TBAB) (a thermodynamic promoter) addition on the kinetics of CH4 hydrate were evaluated on the microscopic scale using synchrotron x-ray computed tomography (CT) and powder x-ray diffraction. Microscopic observations showed that a 5 wt. % TBAB solution facilitated the nucleation of CH4 hydrate owing to the initial growth of TBAB semi-clathrate hydrate particles. The CH4 hydrate crystals in the CH4 + TBAB hydrate sample were sponge-like with many internal pores and exhibited slightly enhanced self-preservation compared to the pure CH4 hydrate, both in the bulk and after pulverization to a fine powder. This study demonstrates the feasibility of controlling the rate of CH4 hydrate formation and preservation by using aqueous TBAB solutions in CH4 hydrate formation.
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21 April 2024
Research Article|
April 17 2024
Microstructural investigation of morphology and kinetics of methane hydrate in the presence of tetrabutylammonium bromide: Insights for preservation and inhibition
Special Collection:
Porous Solids for Energy Applications
Satoshi Takeya
;
Satoshi Takeya
a)
(Conceptualization, Data curation, Investigation, Visualization, Writing – original draft, Writing – review & editing)
1
National Institute of Advanced Industrial Science and Technology (AIST)
, Tsukuba West, 16-1 Onogawa, Tsukuba 305-8569, Japan
a)Author to whom correspondence should be addressed: s.takeya@aist.go.jp
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Sanehiro Muromachi
;
Sanehiro Muromachi
(Investigation, Writing – original draft, Writing – review & editing)
1
National Institute of Advanced Industrial Science and Technology (AIST)
, Tsukuba West, 16-1 Onogawa, Tsukuba 305-8569, Japan
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Michihiro Muraoka
;
Michihiro Muraoka
(Investigation, Writing – review & editing)
1
National Institute of Advanced Industrial Science and Technology (AIST)
, Tsukuba West, 16-1 Onogawa, Tsukuba 305-8569, Japan
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Kiyofumi Suzuki
;
Kiyofumi Suzuki
(Investigation, Writing – review & editing)
1
National Institute of Advanced Industrial Science and Technology (AIST)
, Tsukuba West, 16-1 Onogawa, Tsukuba 305-8569, Japan
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Norio Tenma
;
Norio Tenma
(Investigation, Writing – review & editing)
1
National Institute of Advanced Industrial Science and Technology (AIST)
, Tsukuba West, 16-1 Onogawa, Tsukuba 305-8569, Japan
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Keiichi Hirano
;
Keiichi Hirano
(Investigation, Writing – review & editing)
2
High Energy Accelerator Research Organization (KEK)
, Oho, Tsukuba 305-0801, Japan
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Kazuyuki Hyodo
;
Kazuyuki Hyodo
(Investigation, Writing – review & editing)
2
High Energy Accelerator Research Organization (KEK)
, Oho, Tsukuba 305-0801, Japan
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Masahide Kawamoto
;
Masahide Kawamoto
(Investigation, Writing – review & editing)
3
SAGA Light Source
, 8-7 Yayoigaoka Tosu, Saga 841-0005, Japan
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Akio Yoneyama
Akio Yoneyama
(Data curation, Investigation, Validation, Writing – original draft, Writing – review & editing)
3
SAGA Light Source
, 8-7 Yayoigaoka Tosu, Saga 841-0005, Japan
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a)Author to whom correspondence should be addressed: s.takeya@aist.go.jp
J. Chem. Phys. 160, 154704 (2024)
Article history
Received:
February 04 2024
Accepted:
April 02 2024
Citation
Satoshi Takeya, Sanehiro Muromachi, Michihiro Muraoka, Kiyofumi Suzuki, Norio Tenma, Keiichi Hirano, Kazuyuki Hyodo, Masahide Kawamoto, Akio Yoneyama; Microstructural investigation of morphology and kinetics of methane hydrate in the presence of tetrabutylammonium bromide: Insights for preservation and inhibition. J. Chem. Phys. 21 April 2024; 160 (15): 154704. https://doi.org/10.1063/5.0202418
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