Cu/SiO2-ZnO催化苯胺和乙二醇合成吲哚

摘要

以等体积浸渍-焙烧-原位还原法制备Cu/SiO2>-ZnO催化剂,采用固定床管式反应器考察反应温度、H2与H2O2的通入量以及助剂ZnO含量对苯胺和乙二醇合成吲哚反应的影响.结果表明,反应温度325 ℃、H2流速65 Ml·min-1、H2O流速42 Ml·h-1和加入ZnO助剂质量分数为1.0%条件下,吲哚收率为91%,乙二醇转化率为100%.%Cu/SiO2-ZnO catalyst was prepared by impregnation-calcination-in-situ reduction method and its catalytic activity for the synthesis of indole from aniline and ethylene glycol (EG) was studied in a fixed-bed reactor. The effects of reaction temperature, the amounts of H2 and H2 O introduced into the reaction system and ZnO loading were investigated. The results showed that indole yield of 91％ and EG conversion of 100％ were attained under the condition as follows: reaction temperature 325 ℃, ZnO loading 1.0％ (mass fraction) ,H2 amount 65 mL · min-1 and H2O amount 42 mL · h-1.