Ni基催化剂对苯乙酮选择加氢性能的影响  

Effect of Ni-based catalysts on selective hydrogenation of acetophenone

作　　者：贺友 迟姚玲[1] 董浩 林世静[1] 李嘉璐 张谦温[1] HE You;CHI Yao-ling;DONG Hao;LIN Shi-jing;LI Jia-lu;ZHANG Qian-wen(Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology,College of New Materials and Chemical Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China)

机构地区：[1]北京石油化工学院新材料与化工学院,燃料清洁化及高校催化减排技术北京市重点实验室,北京102617

出　　处：《现代化工》2024年第7期135-138,144,共5页Modern Chemical Industry

基　　金：北京市大学生科学研究与创业行动计划资助(2022J00135)。

摘　　要：以六水合硝酸镍和九水合硝酸铝为前驱体,采用共沉淀法制备了以氧化铝为载体、Ni为活性组分的催化剂粉末;经过催化剂挤条、干燥、焙烧得到相应的固体催化剂。同时采用固定床反应器对该催化剂性能进行了评价。考察了催化剂焙烧温度、反应液体空速、反应压力、反应温度对苯乙酮选择加氢的影响,并利用XRD、BET、H_(2)-TPR、压汞仪对催化剂进行表征。结果表明,催化剂焙烧温度为400℃、反应温度为70℃、反应液体空速为2.5 h^(-1)、反应压力为5 MPa时,苯乙酮转化率和α-苯乙醇的选择性均高于95%。Taking nickel nitrate hexahydrate and aluminum nitrate trihydrate as precursors,the catalyst powder with alumina as carrier and Ni as active component is synthesized via a co-precipitation method,which is then processed into the corresponding solid catalyst through a series physical measurement.The performance of the prepared catalyst is evaluated via the selective hydrogenation of acetophenone in a fixed bed reactor.The influences of catalyst calcination temperature,reaction liquid space velocity,reaction pressure and reaction temperature on the selective hydrogenation of acetophenone are investigated.The catalyst is characterized by means of XRD,BET,H_(2)-TPR,and mercury intrusion.It is indicated by the results that both the conversion rate of acetophenone and the selectivity ofα-phenylethanol exceed 95%when the calcination temperature for the catalyst is 400℃,reaction temperature is 70℃,reaction liquid space velocity is 2.5 h^(-1),and reaction pressure is 5 MPa.

关 键 词：苯乙酮 Α-苯乙醇 NI基催化剂 共沉淀法 

分 类 号：TQ215[化学工程—有机化工]