阿拉伯树胶修饰的纳米Ru-Zn催化剂上苯选择加氢制环己烯  

Selective Hydrogenation of Benzene to Cyclohexene over the Nano-Sized Ru-Zn Catalyst Modified by Arabic Gum

作　　者：孙海杰[1] 陈建军[2] 黄振旭[1] 刘仲毅[2] 刘寿长[2] 

机构地区：[1]郑州师范学院化学化工学院,环境与催化工程研究所,郑州450044 [2]郑州大学化学与分子工程学院,郑州450001

出　　处：《无机化学学报》2016年第2期202-210,共9页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21273205;U1304204);河南省高等学校重点科研项目(No.16A150025);河南省博士后科研项目(No.2013006)资助

摘　　要：用共沉淀法制备了纳米Ru-Zn催化剂,考察了阿拉伯树胶修饰对苯选择加氢制环己烯催化剂性能的影响,并用X射线衍射(XRD)、透射电镜(TEM)、N_2-物理吸附、X射线光电能谱(XPS)和X射线荧光光谱(XRF)等手段对催化剂进行了表征。结果表明,阿拉伯树胶的用量可以调变Ru-Zn催化剂的粒径。最高环己烯收率随粒径的增大呈火山型变化趋势。当阿拉伯树胶与RuCl_3·x H_2O的质量比为0.033时,Ru-Zn催化剂的最佳粒径为4.0 nm,最高环己烯收率达59.6%。且该催化剂具有良好的重复使用性能。A nano-sized Ru-Zn catalyst was prepared by a co-precipitation method and the effect of arabic gum modification on the performance of Ru-Zn catalysts was investigated. The catalysts were characterized by X-ray diffraction （XRD）, transimission electron microscopy （TEM）, N2 physisorption, X-ray photoelectron spectroscopy （XPS）, and X-ray fluorescence （XRF）. It was found that the dosage of arabic gum could tune the particle size of the Ru-Zn catalysts. The maximum eyelohexene yield showed a volcanic-type variation tendency with the particle size of Ru-Zn catalysts increasing. When the mass ratio of arabic gum to RuCl3-xH2O was 0.033, a Ru-Zn catalyst with a optimum particle size of 4.0 nm was obtained, and a maximum cyclohexene yield of 59.6% was achieved. Moreover, the catalyst exhibited the excellent reusability.

关 键 词：苯 选择加氢 环己烯 阿拉伯树胶 钌 锌 

分 类 号：O614.241[理学—无机化学] O614.821[理学—化学]