高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 135.

• 论文 • 上一篇    下一篇

Cu/ZnO-NiO上光促表面催化二氧化碳和水反应规律的研究

陈崧哲, 钟顺和   

  1. 天津大学化工学院, 一碳化学与化工国家重点实验室, 天津 300072
  • 收稿日期:2002-04-12 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 钟顺和(1938年出生),男,教授,博士生导师,主要从事膜催化、光促表面催化和烃选择氧化等方面的研究.E-mail:shzhong@public.tpt.t.jcn E-mail:shzhong@public.tpt.t.jcn
  • 基金资助:

    教育部博士学科点基金(批准号:1999005603);国家重大基础研究预研项目资助

Studies on the Photo Stimulated Surface-catalytic Reaction of Carbon Dioxide and Water over Cu/ZnO-NiO

CHEN Song-Zhe, ZHONG Shun-He   

  1. State Key Laboratory of C 1 Chemistry and Technology, College of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2002-04-12 Online:2003-01-24 Published:2003-01-24

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被引次数

63

摘要： 采用溶胶-凝胶法制备出摩尔分数为0.5%Cu/ZnO-1.5%NiO的n-p复合半导体材料,利用XRD,TEM,IR,UV-Vis和TPD技术对材料结构、吸光性能和化学吸附性能进行了表征,研究了该材料上CO2和H2O的光促表面催化反应(PSSR)规律.结果表明,所制备的材料能够明显促进PSSR的进行,室温条件下即有CH3OH,CH4和CO生成.讨论了温度对PSSR的影响规律.根据实验结果,得出CO2在材料表面的剪式和卧式吸附态分别为CH4和CH3OH的前驱物,并对PSSR机理进行了讨论.

关键词: 光促表面催化反应, 复合半导体, 二氧化碳, 水, 甲醇

Abstract: The n-p coupled semiconductor material 0.5%Cu/ZnO-1.5%NiO was prepared by using sol-gel method, over which the photo stimulated surface-catalytic reaction(PSSR) of synthesis of CH3OH from CO2 and H2O was studied. XRD, TEM, IR, UV-Vis and TPD experiments were adopted for characterizing the structure, photon absorbing and chemisorbing ability of the material. It was revealed that, during PSSR over the prepared material, CH3OH, CH4 and CO can be secured at a normal temperature. The influence of temperature on PSSR was discussed, based on which shearing and horizontal chemisorption states of CO2 were ascertained to be the surface precursors of CH4 and CH3OH, respectively. Finally the PSSR mechanism was presented.

Key words: Photo stimulated surface-catalytic reaction(PSSR), Composite semiconductors, Carbon dioxide, Water, Methanol

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