一体式陶瓷膜反应器在对硝基苯酚催化加氢中的应用

设计了液固一体式陶瓷膜反应器,开展对硝基苯酚加氢过程的研究,着重考察了不同膜组件对加氢反应和膜过滤的影响,并对一体式反应器的反应分离性能进行了研究.结果表明,膜组件的引入都会增加纳米镍催化剂的吸附,使加氢速率降低,其中水平膜组件使加氢速率下降了36.4%,影响最大.L型膜组件的渗透性能最高,且对加氢速率的影响较小.一体式陶瓷膜反应器中催化加氢速率的衰减程度小于分置式膜反应器,随着催化剂套用次数的增加,膜处理能力先明显下降后趋于平缓.

Application of a submerged ceramic membrane reactor in catalytic hydrogenation of p-nitrophenol

A submerged ceramic membrane reactor was designed and used in the hydrogenation of p-nitrophenol to p-aminophenol over nanometer nickel.Effects of membrane module configuration on the hydrogenation reaction and membrane filtration were investigated.And the performances of the submerged ceramic membrane reactor were studied.Results showed that the membrane module introduction would increase the adsorption of nanometer nickel catalysts and decrease the hydrogenation rate,especially for the horizontal membrane module.The membrane treating capacity of the L shape membrane module was higher than those of the other two membrane modules,while had a little influence on the hydrogenation rate.The decline of hydrogenation rate in the submerged ceramic membrane reactor was lower than in the recirculated ceramic membrane reactor,and the membrane treating capacity first decreased obviously and then changed slightly with reaction cycle.