SIOC English
化学学报
高级检索

化学学报 ›› 2006, Vol. 64 ›› Issue (3): 269-272. 上一篇    

研究简报

高效甲醇水蒸气重整制氢的SBA-15改性的Cu/ZnO/Al2O3催化剂

姚成漳1，张新荣1，王路存1，曹勇*,1，戴维林1, 范康年1，吴东2，孙予罕2   

  1. (1复旦大学化学系 上海市分子催化与功能材料重点实验室 上海 200433)
    (2中国科学院山西煤炭化学研究所 煤转化国家重点实验室 太原 030001)
  • 投稿日期:2005-05-24 修回日期:2005-10-11 发布日期:2006-02-14
  • 通讯作者: 曹勇

Highly Effective Hydrogen Production from Steam Reforming of Methanol over SBA-15-modified Cu/ZnO/Al2O3 Catalysts

YAO Cheng-Zhang1, ZHANG Xin-Rong1, WANG Lu-Cun1, CAO Yong*,1, DAI Wei-Lin1, FAN Kang-Nian1, WU Dong2, SUN Yu-Han2   

  1. (1 Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry,
    Fudan University, Shanghai 200433)
    (2 State Key Laboratory of Coal-conversion, Shanxi Institute of Coal Chemistry, Chinese Academy of Sciences,
    Taiyuan 030001)
  • Received:2005-05-24 Revised:2005-10-11 Published:2006-02-14
  • Contact: CAO Yong

PDF

1055

以介孔SBA-15为结构助剂, 制备出用于甲醇水蒸气重整制氢的新型高效氧化硅掺杂的Cu/ZnO/Al2O3催化剂, 并与传统Cu/ZnO/Al2O3催化剂在相同条件下的催化性能进行了比较. 结果表明, 添加适量介孔SBA-15可显著提高催化剂的催化活性和选择性, 在大幅度提高甲醇转化率的同时有效降低了重整产气中CO的含量. 原位XRD分析证实适量介孔SBA-15的添加对传统Cu/ZnO/Al2O3催化剂的微结构性质可产生重要的调控作用, 从而大大改善其催化活性和制氢选择性.

关键词: 甲醇水蒸气重整, 介孔SBA-15, Cu/ZnO/Al2O3催化剂, 微观应变, 原位XRD

Siliceous mesoporous SBA-15 has been proposed as a new effective structural promoter to prepare highly effective SiO2-modified Cu/ZnO/Al2O3 catalysts for hydrogen production. It was demonstrated that the SBA-15 modified catalyst exhibited superior performance in terms of methanol conversion and suppressed formation of CO during steam reforming of methanol. It was suggested that the intrinsic nature of SBA-15 should favor the generation of modified catalyst with much larger metallic copper surface area and improve copper dispersion. In addition, it was shown by in situ XRD that a considerable increase of the microstrain of Cu nanocrystals could be achieved in the catalysts modified by SBA-15, which correlates well with the enhanced CH3OH conversion as observed on the corresponding samples.

Key words: steam reforming of methanol, mesoporous SBA-15, Cu/ZnO/Al2O3 catalyst, microstrain, in situ XRD