Hindered Gas Transport through an Aqueous Salt Solution Interface
文献类型：期刊论文
| 作者 | Fang, G; Chen, JG |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2018 |
| 卷号 | 122期号:36页码:20774-20780 |
| 关键词 | WATER-SOLUBILITY CARBON-DIOXIDE HYDROGEN IONS DIFFUSION MECHANISM HYDRATION OXIDE |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/acs.jpcc.8b05495 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Gas transport through water plays an important role in various natural processes and applications as the most common form in liquid-gas transport. Conventionally, it is expected that the flux of gas through water would be determined by the gas solubility and diffusion in water. However, it is still unclear whether such behavior holds in aqueous salt solutions. In this paper, we find that the methane transport is heavily hindered through the Pure water aqueous salt solutions by molecular dynamics simulations. Surprisingly, the hindrance to methane is not caused by the methane solubility or the diffusion change in aqueous salt solutions, but by the gas concentration barrier at the liquid-gas interface. Our simulation results show that the gas concentration barrier originates from the variance of the mass density profile in aqueous salt solutions. Furthermore, it is found that the flux of methane is negatively linearly dependent upon the gas concentration barrier at the liquid-gas interface by investigating various salt solutions with different cations and anions, for example, Na+, K+, Mg2+, Ca2+, Cl-, Br-, and in different concentrations and at different temperatures. Our work implies the gas accumulation at the liquid-gas interface as the deciding factor for gas transport through liquid and would be helpful in liquid-gas transport applications like shale gas and flammable ice exploitation. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/30973]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Interfacial Phys & Technol, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Div Interfacial Water, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 4.Swiss Fed Inst Technol, Computat Sci & Engn Lab, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland |
| 推荐引用方式 GB/T 7714 | Fang, G,Chen, JG. Hindered Gas Transport through an Aqueous Salt Solution Interface[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(36):20774-20780. |
| APA | Fang, G,&Chen, JG.(2018).Hindered Gas Transport through an Aqueous Salt Solution Interface.JOURNAL OF PHYSICAL CHEMISTRY C,122(36),20774-20780. |
| MLA | Fang, G,et al."Hindered Gas Transport through an Aqueous Salt Solution Interface".JOURNAL OF PHYSICAL CHEMISTRY C 122.36(2018):20774-20780. |
入库方式： OAI收割
来源：上海应用物理研究所
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