微反应器内硝基苯气-液-固三相催化加氢反应  

Gas-Liquid-Solid Three-Phase Catalytic Hydrogenation of Nitrobenzene in a Microreactor

作　　者：胡婧婧[1,2] 赵玉潮[1] 李淑莲[1] 杨梅[1] 陈光文[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院研究生院,北京100049

出　　处：《化学反应工程与工艺》2011年第2期103-108,共6页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金(20906087)

摘　　要：考察了催化剂壁载方式、涂层载体和Pd负载量对微通道内的硝基苯气-液-固三相催化加氢反应的影响以及其并行放大效应。结果表明,与溶胶-凝胶法相比,浸渍法制备的催化剂涂层性能较好,其转化率、选择性分别达到89.2%和93.8%;采用强酸性、大比表面积的载体有利于反应性能的提高;活性组分Pd负载量为2.00 mg,催化剂活性较好;单通道微反应器内硝基苯加氢反应过程的转化率和选择性均高于多通道微反应器。The influences of coating method, support and loading amount of Pd on the three-phase catalytic hydrogenation of nitrobenzene in a microchannel reactor were investigated. The results showed that the activity of catalyst prepared by coating-impregnation method was better than that of the catalyst prepared by sol-gel method, and the nitrobenzene conversion and the aniline selectivity reached 89.2% and 93,8%, respectively. The catalyst with the stronger acidity and larger specific surface area favored a higher catalytic activity. The catalyst with active component Pd 2.00 mg was better. The reaction performance in single channel was better than that in multi-channel.

关 键 词：微反应器 催化加氢 硝基苯 

分 类 号：TQ052[化学工程] TQ032.4