Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (8): 1721.doi: 10.7503/cjcu20180118

• Physical Chemistry • Previous Articles     Next Articles

Catalysis Theoretical Study on Water Gas Shift Reaction of Au-based Binary Alloy Au12M(M=Cu,Pt,Ni)

FANG Lei1, XIA Shengjie1,*(), XUE Jilong1, MENG Yue2, QIAN Mengdan1, LUO Wei1, ZHANG Xiaofeng1, NI Zheming1,*()   

  1. 1. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
    2. School of Life Sciences, Huzhou University, Huzhou 313000, China
  • Received:2018-02-09 Online:2018-08-10 Published:2018-06-04
  • Contact: XIA Shengjie,NI Zheming E-mail:xiasj@zjut.edu.cn;jchx@zjut.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21503188) and the Natural Science Foundation of Zhejiang Province, China(No.LQ15B030002).

Abstract:

The structural stability, thermodynamic stability and reactivity of Au12M(M=Cu,Pt,Ni) alloy clusters doped with Cu, Pt and Ni were studied by density functional theory(DFT) calculations. The reaction mechanism of water gas shift reaction(WGSR) in gold-based binary alloy clusters was also discussed. The Au12Ni alloy clusters were found to have the best stability and electron activity. The reaction mechanism of redox mechanism and carboxyl mechanism in gold-based binary alloy clusters was explored. The result shows that the WGSR on the Au12Cu alloy is in accordance with the redox mechanism A, those on Au12Pt and Au12Ni alloy clusters are in accordance with the redox mechanism B. Comparing the optimal reaction path of the three clusters, Au12Cu clusters show the best catalytic activity for WGSR.

Key words: Density functional theory, Au12M cluster, Water gas shift reaction(WGSR), Redox mechanism, Carboxy mechanism

CLC Number: 

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