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Molecular insight into carbon dioxide hydrate formation from saline solution

文献类型：期刊论文

作者Liu, Chanjuan1,2,3,4; Zhou, Xuebing1,2,3,4; Liang, Deqing1,2,3,4
刊名RSC ADVANCES
出版日期2021-09-24
卷号11期号:50页码:31583-31589
DOI10.1039/d1ra04015d
通讯作者Liang, Deqing(liangdq@ms.giec.ac.cn)
英文摘要Carbon dioxide hydrate has been intensively investigated in recent years because of its potential use as gas and heat storage materials. To understand the hydrate formation mechanisms, the crystallization of CO2 hydrate from NaCl solutions was simulated at a molecular level. The influence of temperature, pressure, salt concentration and CO2 concentration on CO2 hydrate formation was evaluated. Results showed that the amount of the newly formed hydrate cages pressure went through a fast linear growth period followed by a relatively stable period. Pressure had little effect on CO2 hydrate formation and temperature had a significant influence. The linear growth rate was greatly reduced as the temperature dropped from 255 to 235 K. The salt ion pairs could inhibit CO2 hydrate formation, suggesting that we should choose the lower salinity areas if we want to storage CO2 as gas hydrates in the seabed sediments. The observations in this study can provide theoretical support for the micro mechanism of hydrate formation, and provide a theoretical reference for the technology of hydrate based CO2 storage.
WOS关键词METHANE HYDRATE ; GAS ; REPLACEMENT ; RECOVERY ; CO2 ; SIMULATIONS ; CH4 ; SEQUESTRATION ; DISSOCIATION ; VERIFICATION
资助项目National Natural Science Foundation of China[41603062] ; National Natural Science Foundation of China[51706230]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000716048700001
出版者ROYAL SOC CHEMISTRY
资助机构National Natural Science Foundation of China
源URL[http://ir.giec.ac.cn/handle/344007/35159]  
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.State Key Lab Nat Gas Hydrate, Beijing 100028, Peoples R China
2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Key Lab Gas Hydrate, Guangzhou 510640, Peoples R China
4.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Chanjuan,Zhou, Xuebing,Liang, Deqing. Molecular insight into carbon dioxide hydrate formation from saline solution[J]. RSC ADVANCES,2021,11(50):31583-31589.
APA Liu, Chanjuan,Zhou, Xuebing,&Liang, Deqing.(2021).Molecular insight into carbon dioxide hydrate formation from saline solution.RSC ADVANCES,11(50),31583-31589.
MLA Liu, Chanjuan,et al."Molecular insight into carbon dioxide hydrate formation from saline solution".RSC ADVANCES 11.50(2021):31583-31589.

入库方式： OAI收割

来源：广州能源研究所

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