磷酸铈对磷化镍催化苯酚转移加氢的促进作用  

Promoting Effect of Cerous Phosphate on the Phenol Catalytic Transfer Hydrogenation over Nickel Phosphide Catalyst

作　　者：孟繁星 遇治权[1] 景文文 王瑶[1,2] 孙志超 王安杰[1,2] MENG Fanxing;YU Zhiquan;JING Wenwen;WANG Yao;SUN Zhichao;WANG Anjie(State Key Laboratory of Fine Chemical,Dalian University of Technology,Dalian 116024,China;Liaoning Key Laboratory of Petrochemical Technology and Equipment,Dalian 116024,China)

机构地区：[1]大连理工大学精细化工国家重点实验室,大连116024 [2]辽宁省省级高校石油化工技术与装备重点实验室,大连11602

出　　处：《高等学校化学学报》2020年第4期765-771,共7页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21972014,21473017,21603024,U1508205);中央高校基本科研业务费(批准号:DUT19GJ205);科技部国家重点研发计划项目(批准号:2016YFE0109800)资助.

摘　　要：通过氢气原位程序升温还原法制备了一系列不同Ce/Ni摩尔比的CePO 4-Ni3P及Ni3P催化剂,考察了其在苯酚催化转移加氢反应的催化性能.研究了Ce/Ni摩尔比、供氢溶剂、反应温度和反应时间对催化剂性能的影响,并初步考察了苯酚转移加氢的反应动力学.研究结果表明,CePO4的加入能显著提升体相Ni 3P催化苯酚转移加氢的转化率,且Ce/Ni摩尔比为0.2时促进作用最显著;在所考察的供氢溶剂中异丙醇展现出最好的性能;使用CePO4(0.2)-Ni 3P作为反应催化剂,异丙醇作为供氢溶剂,220℃下反应6 h,苯酚转化率和环己醇选择性分别可达93.1%和92.0%.A series of CePO 4-Ni 3P and Ni 3P catalysts with various Ce/Ni molar ratio were prepared by in-situ H 2 temperature-programmed reduction,and utilized to catalyze the transfer hydrogenation of phenol.The effects of Ce/Ni molar ratio,hydrogen donors,reaction temperature and reaction time on the catalytic perfor-mance were investigated.What’s more,the reaction kinetic parameters were calculated.The reaction results showed that the addition of CePO 4 could significantly improve the phenol conversion.The promoting effect was the most obvious when the Ce/Ni molar ratio was 0.2.2-Propanol exhibited the best catalytic activity among all the screened solvents.A high cyclohexanol selectivity of 92.0%and phenol conversion of 93.1%could be obtained at 220℃for 6 h over the CePO4(0.2)-Ni3P catalyst using 2-propanol as the hydrogen donor and solvent.

关 键 词：磷化镍 磷酸铈 转移加氢 苯酚 异丙醇 

分 类 号：O643[理学—物理化学]