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Formation Kinetics of the Mixed Cyclopentane-Carbon Dioxide Hydrates in Aqueous Sodium Chloride Solutions
Zhou, Xuebing1,2,3,4; Zhang, Ye1; Zang, Xiaoya1,2,3,4; Liang, Deqing1,2,3,4
2020-09-01
发表期刊ENERGIES
卷号13期号:17页码:10
通讯作者Liang, Deqing(liangdq@ms.giec.ac.cn)
摘要Hydrate formation from cyclopentane (CP) and carbon dioxide was measured at 281 K by powder X-ray diffraction (PXRD) and macroscopic methods. The effect of initial pressure and CP mass fraction in liquid phase was analyzed. The results showed that hydrate formation was assumed to start with the nucleation of the mixed CP-CO(2)hydrate with small fraction of CO(2)followed by a large continuous CO(2)adsorption. Initial pressure was found to have a positive correlation with the total CO(2)consumptions when the initial pressure was below 2.5 MPa. However, the total CO(2)consumptions dropped by over a half as the initial pressure was 3.0 MPa. PXRD revealed that all the hydrate samples formed at different initial pressures were structure II. The CO(2)consumptions were assumed to be inhibited by the competitive occupation of 5(12)6(4)cages between CP and CO(2)molecules when the initial pressure was above 2.5 MPa. The CO(2)consumptions were also found to be reduced as the CP mass fraction was above 0.25. An excess of CP molecules was not assumed to strengthen the formation of the mixed CP-CO(2)hydrates at the initial stage, but increased the thickness of liquid CP film at aqueous brine and hydrate particles, which increased the diffusion resistance of CO(2)molecules. Therefore, the suitable initial pressure and the CP mass fraction for the mixed CP-CO(2)hydrate formation should be around 2.5 MPa and 0.2, respectively.
关键词gas hydrate desalination carbon dioxide cyclopentane PXRD
DOI10.3390/en13174388
关键词[WOS]CO2 HYDRATE ; CLATHRATE HYDRATE ; PHASE-EQUILIBRIUM ; SALT REMOVAL ; WATER ; GROWTH ; BRINE ; DESALINATION ; NUCLEATION ; MIXTURE
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China[51706230] ; National Key Research and Development Plan of China[2017YFC0307306] ; Guangdong Natural Science Foundation[2020A1515010374] ; Guangdong MEPP Fund[GDOE [2019]A39]
WOS研究方向Energy & Fuels
项目资助者National Natural Science Foundation of China ; National Key Research and Development Plan of China ; Guangdong Natural Science Foundation ; Guangdong MEPP Fund
WOS类目Energy & Fuels
WOS记录号WOS:000569711500001
出版者MDPI
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/32025
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 Inst Energy Convers, Guangzhou 510640, Peoples R China
2.CAS Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Peoples R China
第一作者单位中国科学院广州能源研究所
推荐引用方式
GB/T 7714
Zhou, Xuebing,Zhang, Ye,Zang, Xiaoya,et al. Formation Kinetics of the Mixed Cyclopentane-Carbon Dioxide Hydrates in Aqueous Sodium Chloride Solutions[J]. ENERGIES,2020,13(17):10.
APA Zhou, Xuebing,Zhang, Ye,Zang, Xiaoya,&Liang, Deqing.(2020).Formation Kinetics of the Mixed Cyclopentane-Carbon Dioxide Hydrates in Aqueous Sodium Chloride Solutions.ENERGIES,13(17),10.
MLA Zhou, Xuebing,et al."Formation Kinetics of the Mixed Cyclopentane-Carbon Dioxide Hydrates in Aqueous Sodium Chloride Solutions".ENERGIES 13.17(2020):10.
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