高等学校化学学报

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (12): 2091.

• 研究快报 • 上一篇    下一篇

负载型ZnO/SiO2及ZnO-SiO2溶胶凝胶催化剂的表面结构研究

刘庆生1, 王振旅1, 于剑锋1, 杨飘萍1, 王国甲1, 杨洪茂1, 郑大方2, 吴通好1   

  1. 1. 吉林大学化学系催化研究室, 长春 130023;
    2. 吉林大学分析测试中心, 长春 130023
  • 收稿日期:2000-07-03 出版日期:2001-12-24 发布日期:2001-12-24
  • 通讯作者: 于剑锋(1959年出生),男,博士,副教授,从事多相催化研究.E-mail:jianfengyu@yahoo.com E-mail:jianfengyu@yahoo.com

Investigation of Surface Structures of Supported ZnO/SiO2 and ZnO-SiO2 Sol-gel Catalysts

LIU QingSheng1, WANG ZhenLü1, YU JianFeng1, YANG PiaoPing1, WANG GuoJia1, YANG HongMao1, ZHENG DaFang2, WU TongHao1   

  1. 1. Departmentof Chemistry, Jilin University, Changchun 130023, China;
    2. Analysis Test&Exp eriment Center, Jilin University, Changchun 130023, China
  • Received:2000-07-03 Online:2001-12-24 Published:2001-12-24

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关键词: FTIR, XPS, 丁醇-2分解, ZnO/SiO2, ZnO-SiO2溶胶凝胶催化剂, 表面结构

Abstract: ZnO/SiO2 and ZnOSiO2 catalysts were prepared by the impregnation and solgel method, respectively. The characterization of the catalysts by XPSand FTIRindicated that much "free" zinc oxide and unreacted Si—OHexisted on the surface of ZnO/SiO2 sample. As for ZnOSiO2 solgel catalyst, the corresponding phenomena were not observed. The prepared samples were also used as the catalysts for decomposition of 2butanol. Ahigh selectivity for dehydrogenation was observed over the supported catalyst. However, a high selectivity for dehydration was shown over the ZnOSiO2 solgel catalyst. The opposite selectivity for dehydration or dehydrogenation observed over the two kinds of catalysts may be just because of the different surface structures of the catalysts.

Key words: FTIR, XPS, Decomposition of 2-butanol, ZnO/SiO2, ZnOSiO2 solgel catalysts, Surface structure

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