摘要
本文概述了Au催化剂的研究进展 ,各类反应对Au催化剂的微观结构非常敏感。催化剂的活性与载体的种类、催化剂表面Au晶粒大小、载体与Au相互作用的强弱以及制备方法密切相关。载体主要包括各种氧化物和分子筛 ;表面Au粒子平均直径小于 5nm ,一般会有较好的催化活性 ;常用沉积 -沉淀法或共沉淀法来制备。
A review on supported gold catalysts is given in this paper. Three factors are important in the catalysts, i.e., type of metal oxide supports, size of the gold particales and the strength of interaction between the gold particles and supports. Depostions-precipitation and co-precipitation are better methods than impregnation to prepare catalysts comprising fine gold particles and to provide the desired intimacy of contact between gold and supports. Low-temperature CO oxidation and propylene epoxidation over supported gold catalysts are discussed.
出处
《化学工业与工程》
CAS
2002年第6期462-466,共5页
Chemical Industry and Engineering
