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、H2-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%.
Abstract
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,H2-TPR,and mercury intrusion.It is indicated by the results that both the conversion rate of acetophenone and the selectivity of α-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.
基金项目
北京市大学生科学研究与创业行动计划资助(2022J00135)
NETL
NSTL
万方数据