Surface modified organic-inorganic hybrid microporous silica membranes for hydrogen separation - 文章详情页

作者：

收录：

Scopus PKU CSCD

摘要：

Organic-inorganic　hybrid　silica　membranes　were　prepared　by　sol-gel　method　with　bridged　silsesquioxane[1,　2-bis(triethoxysilyl)　ethane,　BTESE]　and　phenyltriethoxysilane　(PTES)　as　precursors.　The　pore　structure　and　hydrophobic　property　of　the　hybrid　silica　membranes　were　characterized　by　N2　adsorption,　contact　angle　meter,　TG　and　FTIR.　The　hydrogen　permeation　and　separation　performance　was　also　investigated.　The　results　show　that　the　modified　hybrid　silica　membranes　possess　a　desirable　microporous　structure　with　a　pore　width　centered　at　0.4-0.6　nm.　Such　a　pore　structure　can　be　retained　after　aging　for　30　d　under　a　temperature　of　40°C　and　a　relative　humidity　of　70%-80%.　The　hybrid　silica　membranes　become　hydrophobic　after　modification,　with　a　water　contact　angle　of　(125±0.4)°　at　a　PTES/BTESE　molar　ratio　of　0.6.　The　transportation　of　hydrogen　in　the　hybrid　silica　membranes　complies　with　the　activated　diffusion　mechanism,　with　a　permeance　of　8.71×10-7mol·m-2　·Pa-1·s-1　and　a　H2/CO2　permselectivity　of　5.53.

关键词：

Hydrogen separation; Organic-inorganic hybrid-SiO2; Phenyl; Pore structure

作者机构：

[ 1 ] [Duan, X.-Y.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wei, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [He, J.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Yan, J.-P.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Li, Q.-Y.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Nie, Z.-R.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

[Wei, Q.]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

qiwei@bjut.edu.cn

查看成果更多字段

成果类型
所属机构

所有年份指定年份从至