络合浸渍法制备Ni/ZrO_2催化剂及其催化顺酐液相加氢性能  

Preparation of Ni/ZrO_2 catalysts for liquid hydrogenation of maleic anhydride by complex impregnation

作　　者：徐爱军 梁二艳 王杰[2] 张因[2] 赵永祥[2] Xu Aijun;Liang Eryan;Wang Jie;Zhang Yin;Zhao Yongxiang(Henan Energy and Chemical Group Fine Chemical Co.,Ltd,Hebi 458000,China;Engineering Research Center of Ministry of Education for Fine Chemicals,Shanxi University,Taiyuan 030006,Shanxi,China)

机构地区：[1]河南能源化工集团精细化工有限公司,河南鹤壁458000 [2]山西大学精细化学品工程研究中心,山西太原030006

出　　处：《工业催化》2018年第2期28-32,共5页Industrial Catalysis

基　　金：国家自然科学基金青年科学基金项目(21303097);国家国际科技合作专项(2013DFA40460)

摘　　要：分别以柠檬酸、乙二胺、乙酰丙酮以及乙二胺四乙酸二钠为络合剂,采用络合浸渍法制备Ni质量分数为10%的Ni/ZrO_2催化剂,考察催化顺酐液相加氢性能,并利用XRD、H2-TPR、H2-TPD等对其进行表征。结果表明,各络合剂对催化剂中金属-载体相互作用、活性金属分散度以及C=O加氢活性的影响均不相同。引入乙酰丙酮的Ni/ZrO_2-AC催化剂具有最高的活性金属分散度和C=O加氢活性,表现出最高的γ-丁内酯选择性,该催化剂在反应温度210℃、氢压5 MPa条件下反应3 h,顺酐转化率约100%,γ-丁内酯选择性47.0%。Ni/ZrO 2 catalysts with Ni content of 10wt%were prepared by complexing-impregnation method,using citric acid,ethylenediamine,acetylacetone and disodium ethylene diaminetetraacetate as complexing agent respectively.Catalytic performances of these catalysts for liquid phase hydrogenation of maleic anhydride were evaluated.Catalysts were characterized by XRD,H 2-TRP and H 2-TPD.Results showed that different complexing agents had different effects on interaction between metal and support,dispersion of active metal and C O hydrogenation activity.Ni/ZrO 2-AC catalyst prepared using acetylacetone as complexing agent exhibited the highest metal dispersion,C O hydrogenation activityandγ-butyrolactone selectivity.When reaction conditions were 210℃and 5 MPa of hydrogen pressure,conversion of maleic anhydride on Ni/ZrO 2-AC catalyst was 100%and selectivity ofγ-butyrolactonewas 47.0%.

关 键 词：催化化学 顺酐加氢 Ni/ZrO 2催化剂 络合剂 Γ-丁内酯 

分 类 号：O643.36[理学—物理化学] TQ426.6[理学—化学]