摘要
综述了近十年来新型Keggin结构硅钨酸盐及其一系列衍生物催化剂的合成及其在选择氧化反应中应用的研究进展。分别介绍了具有空位的硅钨酸盐、过渡金属取代的硅钨酸盐、二聚型硅钨酸盐、有机-无机杂化硅钨酸盐及负载型硅钨酸盐催化剂,其中负载型硅钨酸盐催化剂不仅保留了均相催化剂活性高的优点,且克服了以往负载型催化剂活性物种易流失的缺点,在烯烃的环氧化反应中表现出较好的催化活性及可重复利用性能。
The research developments in synthesis and application of silicotungstate with Keggintype structure and its derivants used as catalysts in epoxidations of alkenes were reviewed. Silicotungstate with vacancy, transition metal substituted silicotungstate, di -silicotungstate, organicinoganic hybrid silicotungstate and novel supported silicotungstate catalysts were introduced. Among these catalysts, the novel supported catalysts not only possessed high activity usually belonging to homogeneous catalysts, but also active components on support were not easily removed. In epoxidation of alkenes, the supported catalysts exhibited excellent activity and reusability.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2007年第4期412-417,共6页
Petrochemical Technology
基金
国家自然科学基金项目(20407006
20573024)
上海市科委基础研究重点项目(06JC14004)
