Acta Phys. -Chim. Sin. ›› 2017, Vol. 33 ›› Issue (8): 1699-1708.doi: 10.3866/PKU.WHXB201704263

• ARTICLE • Previous Articles     Next Articles

Catalytic Performance for Hydrogen Production through Steam Reforming of Dimethyl Ether over Silica Supported Copper Catalysts Synthesized by Ammonia Evaporation Method

Xin-Lei WANG1,Kui MA1,Li-Hong GUO1,2,Tong DING1,Qing-Peng CHENG1,Ye TIAN1,*(),Xin-Gang LI1,*()   

  1. 1 Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science and Engineering, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300354, P. R. China
    2 School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, P. R. China
  • Received:2017-03-13 Published:2017-06-14
  • Contact: Ye TIAN,Xin-Gang LI E-mail:tianye@tju.edu.cn;xingang_li@tju.edu.cn
  • Supported by:
    The project was supported by the National Natural Science Foundation of China(21476159);The project was supported by the National Natural Science Foundation of China(21476160);Natural Science Foundation of Tianjin(15JCZDJC37400);Natural Science Foundation of Tianjin(15JCYBJC23000)

Abstract:

A series of xCu/SiO2-AE catalysts with different Cu loadings was prepared by the ammonia evaporation method. The as-prepared catalysts were used for hydrogen production via steam reforming of dimethyl ether, and showed high catalytic activities. The 30Cu/SiO2-AE catalyst (with 30% (w) Cu loading) exhibits the best catalytic performance. Our studies reveal the presence of highly dispersed Cu0 and copper phyllosilicate on the surface of the catalysts, which can then be reduced to Cu0 and Cu+ species, respectively. Compared with the 30Cu/SiO2-IM catalyst prepared by the conventional impregnation method, the remarkable catalytic stability and activity of the 30Cu/SiO2-AE catalyst are mainly ascribed to its unique lamellar structure and the cooperative effect between the surface Cu0 and Cu+ species.

Key words: Steam reforming of dimethyl ether, Hydrogen production, Copper phyllosilicate, Cu/SiO2, Ammonia evaporation method

MSC2000: 

  • O643