气体分离炭膜的结构设计、制备及功能化
收稿日期: 2009-07-01
修回日期: 2009-12-16
网络出版日期: 2010-05-12
Physical Design, Preparation and Functionalization of Carbon Membranes for Gas Separation
Received date: 2009-07-01
Revised date: 2009-12-16
Online published: 2010-05-12
李 琳1 , 王同华1 , 曹义鸣2 , 邱介山1 . 气体分离炭膜的结构设计、制备及功能化[J]. 无机材料学报, 2010 , 25(5) : 449 -456 . DOI: 10.3724/SP.J.1077.2010.00449
Two challenges faced by carbon membrane for application on commercial scale are its low permeability and poor mechanical strength. And it is attributed to the vermiform pore structures and special characteristics of carbon membranes. In order to solve these problems, methods such as choosing the precursors with suitable chemical structure and space mould, incorporating nanosize functional groups into precursors are employed to effectively change and improve the vermiform pore structures of carbon membranes and enhance the gas permeabilities of carbon membranes. The results indicate that the gas permeabilities of hybridized function carbon membranes are increased by 2 orders in magnitude without reducing the gas selectivity obviously. Besides, some functional carbon membranes have also revealed higher gas selectivity for some gases such as CO2. The coalbased composite carbon membranes with high gas permselectivity are developed by dipcoating the precursors on the cheap coalbased supports invented by ourselves to improve the mechanical strength of carbon membranes.
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