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过渡金属修饰对Pt/M-DMSN催化剂丙烷脱氢性能的影响
引用本文:胡慧敏,崔静,刘丹丹,宋佳欣,张宁,范晓强,赵震,孔莲,肖霞,解则安.过渡金属修饰对Pt/M-DMSN催化剂丙烷脱氢性能的影响[J].高等学校化学学报,2022,43(4):20210815-132.
作者姓名:胡慧敏  崔静  刘丹丹  宋佳欣  张宁  范晓强  赵震  孔莲  肖霞  解则安
作者单位:1.沈阳师范大学化学化工学院, 沈阳 110034;2.中国石油大学(北京)重质油国家重点实验室, 北京 102249
基金项目:国家自然科学基金;辽宁省教育厅科学研究经费项目;沈阳师范大学优秀人才基金;沈阳师范大学重大项目
摘    要:以两步法制备了一系列过渡金属(M=Fe, Co, Ni, Cu, Zn)修饰的树枝状介孔二氧化硅纳米粒子(DMSN)负载铂(Pt/M-DMSN)催化剂, 并对该系列催化剂进行了丙烷催化脱氢性能评价. X射线衍射(XRD)、 透射电子显微镜(TEM)、 紫外-可见漫反射光谱(UV-Vis DRS)和氢气程序升温还原(H2-TPR)表征结果表明, 不同过渡金属在DMSN载体表面分散状态不同,且与Pt的相互作用程度不同. 其中Zn-DMSN载体最有利于Pt的分散, 且反应后催化剂上积碳含量最低; Pt/Fe-DMSN催化剂中Pt与载体的相互作用力较强. 通过活性评价结果可知, Pt/Fe-DMSN催化剂表现出最优的丙烷催化脱氢性能, 丙烷初始转化率为44.2%, 反应6 h后丙烷转化率仍可达36.5%.

关 键 词:过渡金属修饰  铂基催化剂  金属-载体相互作用  丙烷脱氢  丙烯  
收稿时间:2021-12-02

Influence of Different Transition Metal Decoration on the Propane Dehydrogenation Performance over Pt/M-DMSN Catalysts
HU Huimin,CUI Jing,LIU Dandan,SONG Jiaxin,ZHANG Ning,FAN Xiaoqiang,ZHAO Zhen,KONG Lian,XIAO Xia,XIE Zean.Influence of Different Transition Metal Decoration on the Propane Dehydrogenation Performance over Pt/M-DMSN Catalysts[J].Chemical Research In Chinese Universities,2022,43(4):20210815-132.
Authors:HU Huimin  CUI Jing  LIU Dandan  SONG Jiaxin  ZHANG Ning  FAN Xiaoqiang  ZHAO Zhen  KONG Lian  XIAO Xia  XIE Zean
Institution:1.College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China;2.State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China
Abstract:A series of transition metal modified dendritic mesoporous silica nanoparticles(DMSN) supported Pt(Pt/M-DMSN, M=Fe, Co, Ni, Cu, Zn) catalysts were prepared by a two-step method. And their catalytic performances were tested for propane dehydrogenation. The XRD, TEM, UV-Vis DRS and H2-TPR characterizations results indicate the different dispersion state of transition metal on DMSN surface and the different interaction of the transition metal and Pt. Zn-DMSN support shows the most favorable dispersion to Pt, and the lowest coke deposition on the corresponding spent catalyst. Pt/Fe-DMSN catalysts show strong Pt-support interaction. According to the activity test results, Pt/Fe-DMSN catalyst shows the best performance for propane dehydrogenation with the propane initial conversion of 44.2%. And the propane conversion is 36.5% after 6 h reaction.
Keywords:Transition metal modification  Pt-based catalyst  Metal-support interaction  Propane dehydrogenation  Propene  
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