GIEC OpenIR  > 中国科学院广州能源研究所
Phase equilibrium and Raman spectroscopic studies of semi-clathrate hydrates for methane, nitrogen and tetra-butyl-ammonium fluoride
Cai, Jing1,2; Xu, Chun-Gang1,2; Hu, Ya-Fei1,2,3; Ding, Ya-Long1,2,3; Li, Xiao-Sen1,2
2016-04-15
Source PublicationFLUID PHASE EQUILIBRIA
Volume413Pages:48-52
AbstractThe experimental study on phase equilibrium conditions for semi-clathrate hydrates formed in the systems of CH4/N-2 gas mixture and tetra-butyl-ammonium fluoride (TBAF) with different ratios (0.210, 0.293 and 0.500 mol%) to water was conducted in this paper. The experiments were carried out under the conditions of 281.15-291.15 K and 0.30-3.70 MPa. The structures of the hydrates were characterized using in-situ Raman spectroscopy at 276.15 K and 2.50 MPa. At a certain given pressure, the equilibrium temperature of the semi-clathrate hydrates formed in the systems with 0.500 mol% TBAF is significantly higher than that of semi-clathrate hydrates formed the systems with 0.210 or 0.293 mol% TBAF, and even higher than that of structure II hydrates formed in the systems with THF-SDS. Moreover, TBAF has more positive influence on enhancing dissociation enthalpies of the hydrates than THF. Due to the quite weak signal of N N triple bond vibration or/and seldom N-2 molecules encaged into the cavities, only CH4 molecules could be determined clearly in the mixed hydrates. In addition, the crystal morphology of the semi-clathrate hydrates is affected by the ratio of TBAF to water. (C) 2015 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordHydrate Phase Equilibrium Tbaf Semi-clathrate Dissociation Enthalpy
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.fluid.2015.09.054
WOS Subject ExtendedThermodynamics ; Chemistry ; Engineering
WOS KeywordCARBON-DIOXIDE ; GAS HYDRATE ; BROMIDE ; SEPARATION ; HYDROGEN ; CHLORIDE ; CRYSTALLIZATION ; TETRAHYDROFURAN ; PROMOTERS ; MIXTURES
Indexed BySCI
Language英语
WOS SubjectThermodynamics ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000371554100008
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11132
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, 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.Univ Chinese Acad Sci, Beijing 100083, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Cai, Jing,Xu, Chun-Gang,Hu, Ya-Fei,et al. Phase equilibrium and Raman spectroscopic studies of semi-clathrate hydrates for methane, nitrogen and tetra-butyl-ammonium fluoride[J]. FLUID PHASE EQUILIBRIA,2016,413:48-52.
APA Cai, Jing,Xu, Chun-Gang,Hu, Ya-Fei,Ding, Ya-Long,&Li, Xiao-Sen.(2016).Phase equilibrium and Raman spectroscopic studies of semi-clathrate hydrates for methane, nitrogen and tetra-butyl-ammonium fluoride.FLUID PHASE EQUILIBRIA,413,48-52.
MLA Cai, Jing,et al."Phase equilibrium and Raman spectroscopic studies of semi-clathrate hydrates for methane, nitrogen and tetra-butyl-ammonium fluoride".FLUID PHASE EQUILIBRIA 413(2016):48-52.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cai, Jing]'s Articles
[Xu, Chun-Gang]'s Articles
[Hu, Ya-Fei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cai, Jing]'s Articles
[Xu, Chun-Gang]'s Articles
[Hu, Ya-Fei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cai, Jing]'s Articles
[Xu, Chun-Gang]'s Articles
[Hu, Ya-Fei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.