高校化学工程学报2024，Vol.38Issue(6)：916-923,8.DOI:10.3969/j.issn.1003-9015.2024.06.009
还原方法对Pd/有机硅杂化膜的结构及性能影响
Effects of reduction methods on the structure and performance of Pd/organosilica hybrid membranes
摘要
Abstract
To improve hydrogen permeation selectivity of organosilica membranes,palladium chloride(PdCl2)was incorporated into 1,6-bis(triethoxysilicyl)hexane(BTESH)derived sols to prepare membranes via a sol-gel method.Pd2+was then reduced and the effects of ethanol,ethylene glycol and H2/N2 atmosphere on the reduction degree of Pd were studied.The obtained Pd/BTESH hybrid membranes were tested for hydrogen separation.The results show that ethanol has no reducing capacity,and H2/N2 atmosphere displays a stronger reducing ability with a better hydrogen separation selectivity than that of ethylene glycol reduction,and the corresponding membrane shows H2/N2 selectivity of 14.As the Pd contents increase in BTESH under H2/N2 reduction,the H2 permeance decreases first and then increases,while selectivity is inverse.After optimization of Pd contents,the Pd/BTESH-0.2 membrane shows a H2/N2 selectivity 72%higher than that of BTESH organosilica membranes at 200℃.In addition,the Pd/BTESH membrane has a good hydrothermal stability.关键词
有机硅/还原方法/Pd/膜/氢气分离Key words
organosilica/reduction method/Pd/membrane/hydrogen separation分类
化学化工引用本文复制引用
吴梓豪,任秀秀,姚政,徐荣,郭猛,钟璟,沈敏..还原方法对Pd/有机硅杂化膜的结构及性能影响[J].高校化学工程学报,2024,38(6):916-923,8.基金项目
国家重点研发计划(2022YFB3805003) （2022YFB3805003）
常州市科技计划(CZ20220033,CE20225007) （CZ20220033,CE20225007）
江苏省研究生科研与实践创新计划(YPC23020217). （YPC23020217）
