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论文期刊

论文标题    Application of nanoporous graphene membranes in natural gas processing: Molecular simulations of CH4/CO2, CH4/H2S and CH4/N2 separation
作者    Chengzhen Sun; Boyao Wen; Bofeng Bai*
发表/完成日期    2015-09-12
期刊名称    Chemical Engineering Science
期卷    138
相关文章    2015-Application of nanoporous graphene membranes in natural gas processing Molecular simulations of CH4CO2, CH4H2S and CH4N2 separation.pdf   
论文简介    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.
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