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超细Cu-ZnO-ZrO2催化剂的制备及其催化CO2加氢合成甲醇的性能
引用本文:丛昱,田金忠,黄宁表,徐长海,张涛,孙孝英,关文,梁东白.超细Cu-ZnO-ZrO2催化剂的制备及其催化CO2加氢合成甲醇的性能[J].催化学报,2000,21(3):247-250.
作者姓名:丛昱  田金忠  黄宁表  徐长海  张涛  孙孝英  关文  梁东白
作者单位:1. 中国科学院大连化学物理研究所环境工程实验室,大连,116023
2. 香港城市大学生物及化学系,香港
基金项目:香港城市大学校科研和教改项目;7000800;
摘    要: 采用溶胶-凝胶法、共沉淀法和共沸蒸馏法制备了一系列不同粒度范围的超细Cu-ZnO-ZrO2催化剂,并应用BET,XRD,TEM和TPR等物理化学方法对催化剂的结构和物化性质进行了表征,同时考察了催化剂上CO2加氢合成甲醇的反应性能.结果表明,超细Cu-ZnO-ZrO2催化剂具有粒度小、颗粒分布均匀和稳定性好的特点,并发现超细Cu-ZnO-ZrO2催化剂比大颗粒的工业Cu-ZnO-Al2O3催化剂具有更高的催化活性,而且随着催化剂粒度的减小,甲醇合成活性进一步增大.研究还发现,ZrO2具有稳定反应活性中心的作用.

关 键 词:超细粒子催化剂    氧化锌  氧化锆  二氧化碳  加氢  甲醇
收稿时间:2000-06-25

Preparation of Ultrafine Cu-ZnO-ZrO2 Catalysts and CO2 Hydrogenation Performance
CONG Yu,TIN Kam Chung,WANG Ning Biao,XU Changhai,ZHANG Tao,SUN Xiaoying,GUAN Wen,LIANG Dongbai.Preparation of Ultrafine Cu-ZnO-ZrO2 Catalysts and CO2 Hydrogenation Performance[J].Chinese Journal of Catalysis,2000,21(3):247-250.
Authors:CONG Yu  TIN Kam Chung  WANG Ning Biao  XU Changhai  ZHANG Tao  SUN Xiaoying  GUAN Wen  LIANG Dongbai
Abstract:A series of ultrafine particle (UFP) Cu ZnO ZrO 2 catalysts, which were prepared by the sol gel, coprecipitation and azeotropic distillation methods respectively, were investigated by TEM, BET and XRD techniques. The results show that the particles of the catalysts are in the nanometer size range, and have high dispersion and stability. The catalytic performance of these catalysts for CO 2 hydrogenation indicates that the UFP Cu ZnO ZrO 2 catalysts have apparently higher activity than the commercial Cu ZnO Al 2O 3 catalyst. With the decreasing of the particle size, methanol space time yield increases. It has also been found that ZrO 2 plays the role of stabilizing the active centers.
Keywords:ultrafine particle catalyst  copper  zinc oxide  zirconium dioxide  carbon dioxide  hydrogenation  methanol  
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