化工进展2024，Vol.43Issue(3)：1428-1435,8.DOI:10.16085/j.issn.1000-6613.2023-0443
芳烃官能化有机硅膜的制备及丙烯/丙烷分离性能
Fabrication of aromatic functionalized organosilica membranes and gas separation performance
摘要
Abstract
Two organosilica presursors,1,4-bis(triethoxysilyl)benzene(BTESB)with benzene bridges and 4,4'-bis(triethoxysilyl)biphenyl(BTESBPh)with biphenyl bridges were utilized for the fabrication of organosilica membranes via the sol-gel strategy.The two membranes were applied to the gas separation.At 25℃,BTESB membrane displayed a C3H6 permeance of 3.4×10-9mol/(m2·s·Pa)and C3H6/C3H8 selectivity of 9.6.Nevertheless,BTESBPh membrane showed a C3H6 permeance of 1.7×10-8mol/(m2·s·Pa)and a comparable C3H6/C3H8 selectivity of 10.5.BTESBPh membrane networks with biphenyl bridged structures were much looser and could achieve higher gas permeance.The π-π interactions occurred between the big π bond in the benzene ring and the C== C bond in the C3H6 molecules,which was beneficial for the preferential adsorption and permeation of the C3H6 molecules.The biphenyl bridges in BTESBPh membranes enhanced the adsorption and permeation process,as evidenced by the increased C3H6/C3H8 selectivity of the BTESBPh membrane under low testing temperatures.This study could provide a reference for the development of high-performance propylene/propane separation membranes.关键词
有机硅膜/孔径/丙烯/丙烷分离/溶胶-凝胶法/分子筛分Key words
organosilica membranes/pore size/C3H6/C3H8 separation/sol-gel method/molecular sieving分类
化学化工引用本文复制引用
钱俊明,郭猛,任秀秀,余亮,钟璟,徐荣..芳烃官能化有机硅膜的制备及丙烯/丙烷分离性能[J].化工进展,2024,43(3):1428-1435,8.基金项目
江苏省自然科学基金青年基金(BK20210855,BK20200982) （BK20210855,BK20200982）
江苏省高校自然科学研究重大项目(22KJA530001) （22KJA530001）
江苏省精细石油化工重点实验室开放课题(KF2105) （KF2105）
常州市科技计划(CJ20220140,CE20225057,CZ20220033). （CJ20220140,CE20225057,CZ20220033）
