Application of nanoporous graphene membranes in natural gas processing: Molecular simulations of CH4/CO2, CH4/H2S and CH4/N2 separation
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Application of nanoporous graphene membranes in natural gas processing: Molecular simulations of CH4/CO2, CH4/H2S and CH4/N2 separation
- 发表刊物：
- Chemical Engineering Science
- 摘要：
- Nanoporousgraphene is a very promising gas separation membrane with ultrahigh permeability and selectivity.We demonstratefrom molecular dynamics insights thatthe nanoporousgraphene membranes with appropriate pore size and geometry can achieve high permeability and selectivity for separatingCH4/CO2, CH4/H2S and CH4/N2 mixtures.For the 12-graphene-ring-units nanopores functionalized by N and H atoms, the permeance of CO2, H2S and N2 are on the order of 105–106 GPU(gas permeation unit); the selectivity of permeating gases (i.e.CO2, H2S and N2) over the non-permeating gases (i.e. CH4)is as high as 102. The separation performance of thenanoporousgraphene membranes for the three gas mixtures far surpasses the upper bond of the conventional polymer membranes.We anticipate that the development of nanoporousgraphene membranes will provide a novel and high efficiency membrane separation technologyfor the natural gas processing and other gas separation processesin the industries.
- 合写作者：
- Chengzhen Sun; Boyao Wen; Bofeng Bai*
- 卷号：
- 138
- 页面范围：
- 616–621
- 是否译文：
- 否
- 发表时间：
- 2015-09-12