Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (4): 20210815.doi: 10.7503/cjcu20210815

• Physical Chemistry • Previous Articles     Next Articles

Influence of Different Transition Metal Decoration on the Propane Dehydrogenation Performance over Pt/M-DMSN Catalysts

HU Huimin1, CUI Jing1, LIU Dandan1, SONG Jiaxin1, ZHANG Ning1, FAN Xiaoqiang1(), ZHAO Zhen1,2(), KONG Lian1, XIAO Xia1, XIE Zean1   

  1. 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
  • Received:2021-12-02 Online:2022-04-10 Published:2022-01-24
  • Contact: FAN Xiaoqiang,ZHAO Zhen E-mail:fanxiaoqiang1986@126.com;zhenzhao@cup.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22172101);the Scientific Research Project of Education Office of Liaoning Province, China(LQN202009);the Program for Excellent Talents in Shenyang Normal University, China and Major Incubation Program of Shenyang Normal University, China(ZD201901)

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.

Key words: Transition metal modification, Pt-based catalyst, Metal-support interaction, Propane dehydrogenation, Propene

CLC Number: 

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