丁烯氧化脱氢钼铋系催化剂:晶相之间的协同效应  

Oxidative dehydrogenation of butene over bismuth molybdate catalysts:synergetic effect between different crystalline phases

作　　者：张思泽 万超[1] 曾亮 程党国[1] 陈丰秋[1] 巩金龙 ZHANG Size;WAN Chao;ZENG Liang;CHENG Dangguo;CHEN Fengqiu;GONG Jinlong(College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China;Collaborative Innovation Centre of Chemical Science and Engineering, School of Chemical Engineering and Technology,Tianjin University, Tianjin 300072, China)

机构地区：[1]浙江大学化学工程与生物工程学院,浙江杭州310027 [2]天津大学化工学院天津化学化工协同创新中心,天津300072

出　　处：《化工进展》2019年第1期334-343,共10页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(21622606)

摘　　要：钼铋系催化剂以其优良的性能一直以来都是丁烯氧化脱氢研究和应用的热点。本文简述了已有研究中对钼铋系催化剂及改性后的多组分催化剂的晶相结构及其与反应性能间关系的研究进展。指出在钼铋催化剂中,有较多晶格缺陷的α-Bi_2(MoO_4)_3提供吸附位,氧流动性较强的γ-Bi_2MoO_6提供晶格氧,二者的协同作用提高了催化剂的活性。而在改性后的多组分钼铋系催化剂中,添加的组分与钼铋元素结合生成新的晶相,产生了更多的晶格缺陷及氧供体,从而提升了催化性能。对于钼铋系催化剂进一步改进的方向,本文认为在添加组分的方法基础上,还可以从催化剂表面结构方面入手,进行进一步的深入探究。Due to the excellent catalytic performance,the multicomponent bismuth molybdate catalysts have attracted much attention in oxidative dehydrogenation of butene.This review describes the recent progress about the crystalline phases and its relationship with the reaction performance for both single and multicomponent bismuth molybdates.The results indicate that in bismuth molybdate,α-Bi2(MoO4)3 provides adsorption sites because of the presence of more lattice defects,andγ-Bi2MoO6 provides lattice oxygen because of higher oxygen mobility.The synergistic effect of the two phases enhances the activity of the catalysts.In multicomponent bismuth molybdate catalysts,the added elements combine bismuth and molybdenum to form new crystalline phases,resulting in more lattice defects and oxygen donors,and thus improving the catalytic performance.As for the further improvement of multicomponent bismuth molybdate catalysts,it is believed that,on the basis of the method of adding components,the surface structure of the catalysts can be further explored.

关 键 词：烯烃 氧化脱氢 催化剂 晶型结构 

分 类 号：TQ221.2[化学工程—有机化工]