丙烯选择氧化反应的原位DRF TIR研究  

In Situ DRFTIR Study of Propylene Selective Oxidation

作　　者：陈飞[1] 汪洋[1] 陈丰秋[1] 詹晓力[1] 

机构地区：[1]浙江大学化学工程与生物化工系,浙江杭州310027

出　　处：《化学反应工程与工艺》2006年第5期413-417,共5页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金项目(20276061);中国石化股份公司基础研究项目(X505007)

摘　　要：采用原位漫反射红外系统(DRFTIR)研究了多组份钼铋催化剂上的丙烯选择氧化反应,动态考察了丙烯氧化的催化剂表面反应和气相反应行为。结果表明,本反应体系通入反应气30 min后样品池中的反应气氛达到稳态,催化剂表面的选择氧化能够有效抑制气相反应产物CO2,CO的生成量,选择氧化的活性中心是催化剂表面的晶格氧。Many catalysis researches have been carried out in selective oxidation of hydrocarbon for economic profits as well as consideration of resource utilization and environmental protection in modern society. Among these, more profound research have been processed in propylene selective oxidation, but its reaction mechanism is still under debate. In situ Diffuse Reflectance Fourier Transform Infrared （DRFTIR） technique was used to investigate systemically propylene selective oxidation over multi-component bismuth molybdate catalyst, including surface reaction and gas reaction behavior. The results showed that the reactive atmospheres in the cell reached steady within 30 minutes after reaction gases were admitted. The selective oxidation of propylene over catalyst surface effectively controlled deep oxidation products of propylene such as carbon dioxide and carbon monoxide. The centers of active sites of selective oxidation were surface lattice oxygens.

关 键 词：原位 漫反射红外 丙烯氧化 动态 

分 类 号：TQ032.41[化学工程]