Diffusion Law and Calculating Method of Diffusion Coefficient of CO2 in Porous Liquid

10 Pages Posted: 5 Apr 2021

See all articles by Xingxing Zhao

Xingxing Zhao

Chongqing University

Yudong Ding

Chongqing University

lijiao ma

Chongqing University

Qiang Liao

Chongqing University

Xun Zhu

Chongqing University

Hong Wang

Chongqing University

Date Written: April 2, 2021

Abstract

Porous liquid combines the two unrelated things of solid porosity and liquid fluidity, and has showed a great potential gas separation.CO2 diffusion plays an important role in CO2 absorption capacity and rate of porous liquids. In this study, the 2-Methylimidazole zinc salt(ZIF-8) with porous structure was chosen and dispersed into 1-ethyl-3-methy limidazolium bis[(trifluoromethyl)sulfonyl]imide ([EMIm][NTf2]) for synthesizing porous liquids. And then the density and viscosity of porous liquid were measured in different temperature, pressure and ZIF-8 mass concentration. In addition, based on the CO2 absorption experiment of porous liquid taken in a static CO2 absorption system and theoretical calculation, the pressure decay of the system was recorded and CO2diffusion coefficient was calculated to study the CO2 diffusion characteristics of porous liquid under different experimental parameters including ZIF-8 mass fraction, pressure and temperature.

Keywords: Ionic liquids, Porous liquids, ZIF-8, CO2 diffusion coefficient, Diffusion law

JEL Classification: L99

Suggested Citation

Zhao, Xingxing and Ding, Yudong and ma, lijiao and Liao, Qiang and Zhu, Xun and Wang, Hong, Diffusion Law and Calculating Method of Diffusion Coefficient of CO2 in Porous Liquid (April 2, 2021). Proceedings of the 15th Greenhouse Gas Control Technologies Conference 15-18 March 2021, Available at SSRN: https://ssrn.com/abstract=3818048 or http://dx.doi.org/10.2139/ssrn.3818048

Xingxing Zhao

Chongqing University ( email )

No.174
Shazheng street, Shapingba district
Chongqing, 400044
China

Yudong Ding (Contact Author)

Chongqing University ( email )

No.174
Shazheng street, Shapingba district
Chongqing, 400044
China

Lijiao Ma

Chongqing University ( email )

No.174
Shazheng street, Shapingba district
Chongqing, 400044
China

Qiang Liao

Chongqing University ( email )

No.174
Shazheng street, Shapingba district
Chongqing, 400044
China

Xun Zhu

Chongqing University ( email )

No.174
Shazheng street, Shapingba district
Chongqing, 400044
China

Hong Wang

Chongqing University ( email )

No.174
Shazheng street, Shapingba district
Chongqing, 400044
China

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