CeO_2-CuO/ZnO/Al_2O_3用于1,5-戊二醇气相催化脱氢制备δ-环戊内酯的研究  

Study on gas-phase catalyst dehydrogenation of 1,5-pentanediol toδ-valerolactone over CeO_2-CuO/ZnO/Al_2O_3

作　　者：冯世宏[1] 闫广学 宋国全 吴红梅[1] 郭宇[1] FENG Shi-hong;YAN Guang-xue;SONG Guo-quan;WU Hong-mei;GUO Yu(School of Chemical ＆ Environmental Engineering, Liaoning University of Technology, Jinzhou 121004, China;Puyang MYJ Chemical Co., Ltd., Puyang 457000, China)

机构地区：[1]辽宁工业大学化学与环境工程学院,辽宁锦州121004 [2]濮阳迈奇化学股份有限公司,河南濮阳457000

出　　处：《现代化工》2017年第12期106-109,共4页Modern Chemical Industry

基　　金：国家自然科学基金资助课题(21601075)

摘　　要：采用溶胶-凝胶法制备了CeO_2-CuO/ZnO/Al_2O_3,通过XRD检测了CeO_2-CuO/ZnO/Al_2O_3,揭示了CeO_2-CuO/ZnO/Al_2O_3微观结构和内在规律。结果发现,金属离子之间存在协同效应,以1,5-戊二醇气相催化脱氢制备δ-环戊内酯为探针反应,评价其催化活性,3%CeO_2的CuO/ZnO/Al_2O_3呈现出最高催化活性。催化反应的最佳反应条件:反应温度为563 K,气时空速为5 h-1,反应时间为5 h,V(氢气)∶V(1,5-戊二醇)=2.0∶1,p(H2)=0.12 MPa,此时,1,5-戊二醇的转化率为93.0%,δ-环戊内酯的选择性和收率最大值分别达到94.0%、87.4%。该方法为1,5-戊二醇气相催化脱氢制备δ-环戊内酯的中试和工业放大性研究提供了基础数据和实验依据。The CeO2-CuO/ZnO/Al2O3 catalyst is prepared by the sol-gel method and is detected by XRD. The detection discloses the micro-structure and internal rule of CeO2-CuO/ZnO/Al2O_3.It is found that the synergistic effects exist among metal ions. Its catalytic activity is evaluated through the gas-phase catalytic dehydrogenation of 1,5-pentanediol to make δ-valerolactone,indicating that the catalyst containing 3% of CeO2 shows the highest catalytic activity.The optimum conditions are as follows： the reaction temperature is at 563 K,GHSV = 5 h-1,the reaction time lasts for 5 h,hydrogen pressure is 0. 12 MPa,and V（ H2） ∶V（ 1,5-Pentanediol） = 2. 0 ∶1.Under the optimum conditions,the conversion of 1,5-pentanediol is 93. 0%,the maximum selectivity and yield of δ-valerolactone reach 94. 0% and 87. 4%respectively.This study provides plenty of basic data and experimental basis for the pilot and industrial scale up of the gas-phase catalytic dehydrogenation of 1,5-pentanediol to δ-valerolactone.

关 键 词：CuO/ZnO/Al2O3 1 5-戊二醇 δ-环戊内酯 催化脱氢 

分 类 号：O657.3[理学—分析化学]