Accurate measurement of Soret coefficients in binary hydrocarbons mixtures based on composite methods
文献类型：期刊论文
| 作者 | Zhao, Renbao4; Wang, Jiaying4; Xu, Haotian4; Wang, Jinming2,4; Cui, Yifang4; Yao, Quan3; Xu, Shenghua1 ; Liu, Jiyang4; Xu SH(徐升华)
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| 刊名 | JOURNAL OF CHROMATOGRAPHY A
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| 出版日期 | 2024-10-25 |
| 卷号 | 1735页码:14 |
| 关键词 | Soret coefficient Thermolsolutal convection Binary system Porous media Component distribution |
| ISSN号 | 0021-9673 |
| DOI | 10.1016/j.chroma.2024.465346 |
| 通讯作者 | Zhao, Renbao(zhaorenbao@vip.sina.com) |
| 英文摘要 | The Soret effect is a significant factor in various scenarios, with thermodiffusion in binary systems serving as a common method for the study. Most research focuses rarely on the distribution characteristics of components in diffusion systems; and Soret coefficients in the porous media could not be obtained by typical methods based on the thermodiffusion column, which are particularly important in the field of oil and gas development. Moreover, experiments on ground conditions have struggled to determine the Soret coefficient accurately due to the convective effect caused by gravity differentiation. The thermodiffusion behavior of n-pentane (C5) and nheptane (C7) binary mixtures in both bulk and porous media conditions have been investigated, aiming to provide corrected coefficients that mitigate the influence of gravity using theoretical derivation. A new method was proposed to calculate the Soret coefficients in this work by establishing a model based on gas chromatography technology. Dynamic variation of component concentration along the path was studied, and the corresponding Soret coefficients were calculated and analyzed in parallel. The results indicate that the concentration and temperature exhibit a logarithmic relationship with the distance from the heat source. The Soret coefficient values obtained from measurements in porous media are closer to the theoretically corrected values, which do not account for gravity effects. Additionally, as the permeability decreases, the counteracting effect of porous media on convection becomes more pronounced. Therefore, it presents a novel method for accurately measuring the Soret coefficient that ignores convection to some extent. |
| WOS关键词 | DIFFUSION MEASUREMENTS ; OPTICAL MEASUREMENT ; THERMAL-DIFFUSION ; THERMODIFFUSION ; FLOW |
| 资助项目 | Joint Fund Program of The National Natural Science Foundation of China[U1738108] ; Joint Fund Program of The National Natural Science Foundation of China[52274052] |
| WOS研究方向 | Biochemistry & Molecular Biology ; Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001312800300001 |
| 资助机构 | Joint Fund Program of The National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96611]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 通讯作者 | Zhao, Renbao |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Micrograv, Beijing 100190, Peoples R China 2.Offshore Oil Engn Co Ltd, Tianjin 300461, Peoples R China 3.China Univ Petr Beijing Karamay, Petr Inst, Karamay 834000, Peoples R China 4.China Univ Petr, State Key Lab Petr Resources & Engn, Beijing 102249, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Renbao,Wang, Jiaying,Xu, Haotian,et al. Accurate measurement of Soret coefficients in binary hydrocarbons mixtures based on composite methods[J]. JOURNAL OF CHROMATOGRAPHY A,2024,1735:14. |
| APA | Zhao, Renbao.,Wang, Jiaying.,Xu, Haotian.,Wang, Jinming.,Cui, Yifang.,...&徐升华.(2024).Accurate measurement of Soret coefficients in binary hydrocarbons mixtures based on composite methods.JOURNAL OF CHROMATOGRAPHY A,1735,14. |
| MLA | Zhao, Renbao,et al."Accurate measurement of Soret coefficients in binary hydrocarbons mixtures based on composite methods".JOURNAL OF CHROMATOGRAPHY A 1735(2024):14. |
入库方式： OAI收割
来源：力学研究所
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