摘要
对于燃煤的IGCC系统中,通过水煤气(CO+H2)的转换来分离H2/CO2,已成为捕集分离CO2主要手段,而对于具有独特透氢性能钯因素则是分离氢气的主要介质,钯掺杂的氢气分离膜则越来越被研究所关注。然而钯纳米颗粒粒径大小及钯的团聚问题已成为钯功能发挥的最大障碍,因此发展和完善钯纳米颗粒的合成和钯盐的还原则显得越来越重要。介绍钯还原方法和各还原剂的还原机理,特别是对现在最被研究者广泛应用的化学还原法做了较为详细的说明,为制备钯纳米颗粒提供一些参考,同时为实现钯掺杂的氢气分离膜的最大氢气透过率和分离性能,研究出一种低成本、高效率气体分离膜。
In the Integrated Gasification Combined Cycle system,separating H2/CO2 by transforming CO＋H2 into CO2＋H2 has already become the primary method to capture CO2.More and more researches have focused on the Palladium-doped hydrogen separation membrane,which has unique hydrogen penetration ability and becomes the main medium for separating hydrogen.Size of palladium nano-particles and reunion problem are the biggest obstacles for palladium functioning,thus development and improvement of the synthetic methods for Palladium nano-particles has become more and more important.This paper introduces several synthetic routes and the reduction mechanism of the reducing agent,especially describes the chemical reduction method in detail,which is most widely used by researchers.The study provides some references for the preparation of Palladium nano-particles and develops a low-cost and high efficiency gas separation membrane to achieve the maximum hydrogen permeation rate and separating property.
出处
《过滤与分离》
CAS
2012年第3期15-19,共5页
Journal of Filtration & Separation
基金
国家青年科学基金资助项目(B0308)
关键词
气体分离
钯纳米颗粒
还原剂
还原机理
gas separation
Palladium nano-particles
reducing agents
reduction mechanism
