能源化学(英文) ›› 2011, Vol. 20 ›› Issue (6): 629-634.

• Articles • 上一篇    下一篇

Characterization and performance of Cu/ZnO/Al2O3 catalysts prepared via decomposition of M(Cu, Zn)-ammonia complexes under sub-atmospheric pressure for methanol synthesis from H2 and CO2

Danjun Wang1,2, Jun Zhao1, Huanling Song1, Lingjun Chou1*   

  1. 1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000,

     Gansu, China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China

  • 收稿日期:2011-04-07 修回日期:2011-08-29 出版日期:2011-11-20 发布日期:2011-11-18
  • 通讯作者: 丑凌军
  • 基金资助:

    Specialized Research Fund for the Doctoral Program of Higher Education of China

Characterization and performance of Cu/ZnO/Al2O3 catalysts prepared via decomposition of M(Cu, Zn)-ammonia complexes under sub-atmospheric pressure for methanol synthesis from H2 and CO2

Danjun Wang1,2, Jun Zhao1, Huanling Song1, Lingjun Chou1*   

  1. 1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000,

    Gansu, China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China

  • Received:2011-04-07 Revised:2011-08-29 Online:2011-11-20 Published:2011-11-18
  • Contact: Ling-Jun CHOU

摘要:  Methanol synthesis from hydrogenation of CO2 is investigated over Cu/ZnO/Al2O3 catalysts prepared by decomposition of M(Cu, Zn)-ammonia complexes (DMAC) at various temperatures. The catalysts were characterized in detail, including X-ray diffraction, N2 adsorption-desorption, N2O chemisorption, temperature-programmed reduction and evolved gas analyses. The influences of DMAC temperature, reaction temperature and specific Cu surface area on catalytic performance are investigated. It is considered that the aurichalcite phase in the precursor plays a key role in improving the physiochemical properties and activities of the final catalysts. The catalyst from rich-aurichalcite precursor exhibits large specific Cu surface area and high space time yield of methanol (212 g/(Lcat•h);T = 513 K, p = 3 MPa, SV = 12000 h-1).

关键词: decomposition of M(Cu, Zn)-ammonia complexes, Cu/ZnO/Al2O3 catalyst, CO2 hydrogenation, methanol synthesis

Abstract:  Methanol synthesis from hydrogenation of CO2 is investigated over Cu/ZnO/Al2O3 catalysts prepared by decomposition of M(Cu, Zn)-ammonia complexes (DMAC) at various temperatures. The catalysts were characterized in detail, including X-ray diffraction, N2 adsorption-desorption, N2O chemisorption, temperature-programmed reduction and evolved gas analyses. The influences of DMAC temperature, reaction temperature and specific Cu surface area on catalytic performance are investigated. It is considered that the aurichalcite phase in the precursor plays a key role in improving the physiochemical properties and activities of the final catalysts. The catalyst from rich-aurichalcite precursor exhibits large specific Cu surface area and high space time yield of methanol (212 g/(Lcat•h);T = 513 K, p = 3 MPa, SV = 12000 h-1).

Key words: decomposition of M(Cu, Zn)-ammonia complexes, Cu/ZnO/Al2O3 catalyst, CO2 hydrogenation, methanol synthesis