残留Na对镍催化剂加氢性能的影响  

Effect of Residual Na on the Hydrogenation Performance of Nickel Catalysts

作　　者：谷婷婷 赵华华[1] 杨建[1] 宋焕玲[1] 郝云青 丑凌军[1,3] GU Ting-ting;ZHAO Hua-hua;YANG Jian;SONG Huan-ling;HAO Yun-qing;CHOU Ling-jun(State Key Laboratory for Oxo Synthesis and Selective Oxidation,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Suzhou Research Institute of LICP,Chinese Academy of Sciences,Suzhou 215123,China;Nanjing Zunlong New Material Technology Co.,Ltd,Nanjing 211516,China)

机构地区：[1]中国科学院兰州化学物理研究所,羰基合成与选择氧化国家重点实验室,甘肃兰州730000 [2]中国科学院大学,北京100049 [3]中国科学院兰州化学物理研究所苏州研究院,江苏苏州215123 [4]南京尊龙新材料科技有限公司,江苏南京211516

出　　处：《分子催化》2019年第6期501-507,共7页Journal of Molecular Catalysis(China)

基　　金：国家自然科学基金21773272.

摘　　要：采用共沉淀的方法制备了以镍为活性组分、镁为助剂、SiO2为载体的Ni-Mg/SiO2催化剂,以大豆油加氢为探针反应研究催化剂中残留Na的含量对加氢活性的影响.分别用ICP-AES、XRD、H2-TPR、TG-DSC、SEM、BET等手段对不同催化剂进行了表征.结果表明:催化剂中残留Na对加氢活性有很大影响,Na含量为6.86%时,催化剂基本没有活性.随Na含量的降低,催化剂活性逐渐升高.这主要是由于Na对Ni的分散、颗粒尺寸和与载体相互作用有较大的影响有关.A series of Ni-Mg/SiO2 catalysts with the different residual Na contents were prepared by co-precipitation method.Soybean oil hydrogenation was used as a probe reaction to study the effect of residual Na content in the ca-talyst on the hydrogenation activity.The catalysts were characterized by ICP-AES,XRD,H2-TPR,TG-DSC,SEM and BET.As a consequence,the residual Na in the catalyst has a great effect on the hydrogenation activity.The catalyst was basically inactive when the Na content was 6.86%,while the activity of hydrogenation to soybean increased with the drop of sodium exsited in nickel catalyst.It suggested that the residual Na would affect on the dispersion and particle size of Ni,and the interaction with the support between Ni and the support.

关 键 词：镍催化剂 NA 大豆油加氢 

分 类 号：TQ426[化学工程]