Effect of pore size on CH<sub>4</sub>/N<sub>2</sub> separation using activated carbon

Gaofei Chen; Yaxiong An; Yuanhui Shen; Yayan Wang; Zhongli Tang; Bo Lu; Donghui Zhang

doi:10.1016/j.cjche.2019.12.018

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Effect of pore size on CH₄/N₂ separation using activated carbon

Separation Science and Engineering | Updated：2026-01-06

- Effect of pore size on CH₄/N₂ separation using activated carbon
- Chinese Journal of Chemical Engineering Vol. 28, Issue 4, Pages: 1062-1068(2020)
- Affiliations：
  
  1. Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences,Beijing,China,100190
  2. The Research Center of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  3. State Key Laboratory of Coal and CBM Co-mining,Jincheng,China,048000
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.12.018
  CLC：
- Published：2020
- Accepted：
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DOI：

/N DOI： 10.1016/j.cjche.2019.12.018.

摘要

Abstract

In this paper

a model of activated carbon was established by molecular simulation and the separation performance of N

and CH

on activated carbon was studied. In order to evaluate the adsorption selectivity and diffusion selectivity of N

and CH

Grand Canonical Monte Carlo and molecular dynamic methods were used to obtain equilibrium adsorption isotherms and mean square displacements of N

and CH

on activated carbon with different pore sizes. Research results showed that the difference in adsorption isosteric heat of N

and CH

at the pore size of 0.46 nm is the largest

which is 5.759 and 7.03 kcal·mol

-1

(1 cal=4.184 J)

respectively. Activated carbon with pore size of 0.46 nm has the best N

and CH

adsorption selectivity

while its diffusion selectivity is not obvious.

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⁰

Effect of pore size on CH4/N2 separation using activated carbon

DOI：10.1016/j.cjche.2019.12.018

摘要

Abstract

关键词

Keywords

references

Effect of pore size on CH₄/N₂ separation using activated carbon