钯复合膜研究进展.PDFVIP

第 18 卷 第 11 期 化　学　进　展 Vol. 18 No. 11 2006 年 11 月 PROGRESS IN CHEMISTRY 　Nov. , 2006 钯复合膜的研究进展 刘　伟　张宝泉 　刘秀凤 (天津大学化工学院 　天津 300072) 摘 　要 　钯复合膜具有很高的透氢速率和透氢选择性以及良好的化学和热稳定性 ,一直是膜技术领域 的研究热点。本文综述了近年来在钯复合膜透氢机理、钯膜制备方法以及钯膜反应器等方面的研究进展;着 重讨论了近 3 年来钯复合膜制备方法的新进展 ,包括超临界条件下制备钯膜的新技术等内容 ;总结了钯复合 膜在脱氢、部分氧化以及耦合反应过程中应用的一些代表性工作 ,并对钯复合膜制备与应用的发展趋势进行 了展望。 关键词 　透氢 　钯复合膜 　超临界流体 　膜反应器 ( ) 中图分类号: O61482 ; TB331 ; O4841 　文献标识码 : A 　文章编号 : 1005281X 2006 Progress in Palladium Composite Membranes Liu Wei 　Zhang Baoquan 　Liu Xiufeng ( School of Chemical Engineering and Technology , Tianjin University , Tianjin 300072 , China) Abstract 　Palladium composite membranes have attracted wide attention in membrane technology because of their excellent permeability , permselectivity , as well as chemical and thermal stabilities. This review discusses the principle and influence factors of hydrogen permeation , the membrane synthesis and the applications. The progress over the last three years in the preparation of Pdbased membranes , particularly , the novel preparation technique at supercritical conditions , is emphasized. The representative researches are summarized on applications of palladium composite membranes in dehydrogenation , partial oxidation and coupling reactions. The trend in preparation and applications of palladium composite membranes is outlooked. Key words 　hydrogen permeation ; palladium composite membranes ; supercritical fluids ; membrane reactors