Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Semiclathrate hydrate phase behaviour and structure for CH4 in the presence of tetrabutylammonium fluoride (TBAF) | |
Shi, Lingli1,2,3; Liang, Deqing1,2,3
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| 2019-08-01 | |
| Source Publication | JOURNAL OF CHEMICAL THERMODYNAMICS
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| ISSN | 0021-9614 |
| Volume | 135Pages:252-259 |
| Corresponding Author | Liang, Deqing(liangdq@ms.giec.ac.cn) |
| Abstract | Phase behaviour including phase equilibria and dissociation enthalpies and structure of double semiclathrate hydrates formed with tetrabutylammonium fluoride (TBAF) + CH4 were measured to evaluate the performance of TBAF for hydrate based industrial applications. The phase equilibria and the dissociation enthalpies for TBAF + CH4 semiclathrate hydrate (SCH) with (0.02-0.15) salt mass fraction were obtained by employing the isochoric pressure-search method and calculated from the experimental data with Clausius-Clapeyron equation, respectively. A confocal Raman spectrometer was applied to analyze the structure of (TBAF + CH4) SCHs. Data showed that TBAF strongly enhanced the stability of CH4 hydrates by increasing the equilibrium temperature at a given pressure. The Raman spectra revealed that small 5(12) cages of TBAF hydrates could trap CH4 molecules. In particular, the Raman spectra of double TBAF + CH4 SCHs, as compared with those of pure TBAF SCHs, indicated that the large cages which already trapped the cation of TBAF also had the possibility of encaging CH4 molecules at low salt concentrations (<0.12 mass fraction). (C) 2019 Elsevier Ltd. |
| Keyword | Tetrabutylammonium fluoride Methane hydrate Phase equilibria Dissociation enthalpies Raman spectra |
| DOI | 10.1016/j.jct.2019.04.004 |
| WOS Keyword | N-BUTYLAMMONIUM BROMIDE ; PLUS CARBON-DIOXIDE ; EQUILIBRIUM CONDITIONS ; DISSOCIATION CONDITIONS ; GAS-MIXTURES ; AQUEOUS-SOLUTIONS ; METHANE HYDRATE ; HALIDE BROMIDE ; COLD-STORAGE ; CO2 CAPTURE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51606198] ; National Natural Science Foundation of China[41603062] ; Natural Science Foundation of Guangdong Province[2016A030310126] |
| WOS Research Area | Thermodynamics ; Chemistry |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province |
| WOS Subject | Thermodynamics ; Chemistry, Physical |
| WOS ID | WOS:000467807400028 |
| Publisher | ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/24970 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Liang, Deqing |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Shi, Lingli,Liang, Deqing. Semiclathrate hydrate phase behaviour and structure for CH4 in the presence of tetrabutylammonium fluoride (TBAF)[J]. JOURNAL OF CHEMICAL THERMODYNAMICS,2019,135:252-259. |
| APA | Shi, Lingli,&Liang, Deqing.(2019).Semiclathrate hydrate phase behaviour and structure for CH4 in the presence of tetrabutylammonium fluoride (TBAF).JOURNAL OF CHEMICAL THERMODYNAMICS,135,252-259. |
| MLA | Shi, Lingli,et al."Semiclathrate hydrate phase behaviour and structure for CH4 in the presence of tetrabutylammonium fluoride (TBAF)".JOURNAL OF CHEMICAL THERMODYNAMICS 135(2019):252-259. |
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