Thermodynamic Properties of Double Semiclathrate Hydrates Formed with Tetrabutylphosphonium Chloride + CH4

doi:10.1021/acs.jced.7b00738

	Thermodynamic Properties of Double Semiclathrate Hydrates Formed with Tetrabutylphosphonium Chloride + CH4
	Shi, Lingli 1,2,3,4; Ding, Jiaxiang 1,2,3,4,5; Liang, Deqing 1,2,3,4
刊名	JOURNAL OF CHEMICAL AND ENGINEERING DATA
	2017-12-01
卷号	62 期号:12 页码:4377-4382
ISSN号	0021-9568
DOI	10.1021/acs.jced.7b00738
通讯作者	Liang, Deqing(liangdq@ms.giec.ac.cn)
英文摘要	Phase equilibrium conditions for tetrabutylphosphonium chloride (TBPC) + CH4 double semiclathrate hydrates (SCHs) were determined to evaluate the stabilization effect of TBPC for potential applications of hydrate-based gas separation and storage. The equilibrium data revealed that TBPC strongly enhances the stability of CH4 hydrates by increasing the equilibrium temperature at a given pressure, and the system showed the strongest stabilization effect at a TBPC mass fraction of 0.30. The dissociation enthalpies of (TBPC + CH4) SCHs were calculated from the experimental data obtained in this work using the Clausius-Clapeyron equation and the Peng-Robinson equation of state. It was found that the mean dissociation enthalpies for (TBPC + CH4) SCHs with TBPC mass fractions of 0.05 to 0.50 were (135.49 to 158.32) kJ.(mol of CH4)(-1), which were much higher than that of the pure CH4 hydrate. In addition, to identify the molecular behavior and hydrate structure, Raman spectroscopy measurements were conducted at 203 K. The spectra demonstrated that (TBPC+CH4) SCHs were formed in tetragonal structure I with small 5(12) cages trapping CH4 molecules.
资助项目	National Natural Science Foundation of China[51606198] ; National Natural Science Foundation of China[51376182] ; Natural Science Foundation of Guangdong Province[2016A030310126] ; Key Laboratory of Gas Hydrate, Chinese Academy of Sciences[Y607jb1001]
WOS关键词	BUTYL AMMONIUM BROMIDE ; PLUS CARBON-DIOXIDE ; PHASE-EQUILIBRIUM CONDITIONS ; GUEST GAS ENCLATHRATION ; N-BUTYLAMMONIUM CHLORIDE ; SEMI-CLATHRATE HYDRATE ; AQUEOUS-SOLUTIONS ; CO2 CAPTURE ; DISSOCIATION ENTHALPIES ; STABILITY CONDITIONS
WOS研究方向	Thermodynamics ; Chemistry ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000418393800036
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Key Laboratory of Gas Hydrate, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/22751]
专题	中国科学院广州能源研究所
通讯作者	Liang, Deqing
作者单位	1.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 4.Chinese Acad Sci, Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Lingli,Ding, Jiaxiang,Liang, Deqing. Thermodynamic Properties of Double Semiclathrate Hydrates Formed with Tetrabutylphosphonium Chloride + CH4[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2017,62(12):4377-4382.
APA	Shi, Lingli,Ding, Jiaxiang,&Liang, Deqing.(2017).Thermodynamic Properties of Double Semiclathrate Hydrates Formed with Tetrabutylphosphonium Chloride + CH4.JOURNAL OF CHEMICAL AND ENGINEERING DATA,62(12),4377-4382.
MLA	Shi, Lingli,et al."Thermodynamic Properties of Double Semiclathrate Hydrates Formed with Tetrabutylphosphonium Chloride + CH4".JOURNAL OF CHEMICAL AND ENGINEERING DATA 62.12(2017):4377-4382.