CAJ | 학술논문

采用化学还原法制备了Ir／TiO2催化剂，考察了反应时间、温度、底物的量、溶剂与水的比例、不同溶剂等因素对反应物对氯硝基苯的转化率和产物对氯苯胺选择性的影响．结果表明，当反应温度为50℃，压力1MPa，时间为40min，催化剂为20mg，溶剂与水的比例为28％时，反应物的转化率可以达到100％，选择性达到99．9％．
채용화학환원법제비료Ir／TiO2최화제，고찰료반응시간、온도、저물적량、용제여수적비례、불동용제등인소대반응물대록초기분적전화솔화산물대록분알선택성적영향．결과표명，당반응온도위50℃，압력1MPa，시간위40min，최화제위20mg，용제여수적비례위28％시，반응물적전화솔가이체도100％，선택성체도99．9％．
Ir/TiO2 catalyst was prepared by reduction impregnation method and was used for the hydrogenation of p - ehoronitrobenzene（p - CNB）. The performance of the catalyst for the selective hydrogenation of p - CNB to p - CAN was performed in organic water mixtures solutions. Effect of reaction time, temperature, the different quality of p-CNB, solvent and water ratio on hydrogenation of p - CNB to p - CAN were investigated. Under the optimum conditions of reaction temperature at 50℃, time of 40min, the hydrogen pressure 1.0 MPa, ethanol water volume ratio 28% , the conversion of p - CNB and selectivity to p - CAN can achieve 100% and 99.9% , respectively.