催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (12): 1211-1214.

• 研究论文 • 上一篇    下一篇

Au-CuO/TiO2催化剂用于CO2中微量H2的脱除

房德仁,任万忠,徐秀峰,廖卫平,吕宏缨,安立敦   

  1. 烟台大学应用催化研究所, 山东烟台 264005
  • 收稿日期:2008-12-25 出版日期:2008-12-25 发布日期:2012-09-20

Au-CuO/TiO2 Catalyst for the Removal of H2 from CO2-Rich Gases

FANG Deren*, REN Wanzhong, XU Xiufeng, LIAO Weiping, L Hongying, AN Lidun   

  1. Institute of Applied Catalysis, Yantai University, Yantai 264005, Shandong, China
  • Received:2008-12-25 Online:2008-12-25 Published:2012-09-20

PDF

961

被引次数

2

摘要： 用沉积沉淀法制备了Au-CuO/TiO2催化剂和Au/TiO2催化剂,考察了沉淀温度、沉淀pH、焙烧温度和Cu/Au摩尔比等制备工艺条件对Au-CuO/TiO2催化剂性能的影响,确定了适宜的催化剂制备工艺条件. 结果表明, Au-CuO/TiO2催化剂对CO2中微量H2的脱除具有较好的活性和稳定性. 还考察了还原和H2S中毒处理先后的顺序对催化剂H2脱除活性的影响. 结果表明, Au/TiO2催化剂基本上不受处理顺序的影响,而H2S处理顺序对Au-CuO/TiO2催化剂的性能有较为明显的影响,这说明还原后的Au-CuO/TiO2催化剂形成了Au-Cu合金.

关键词: 金, 氧化铜, 二氧化钛, 催化脱氢, 二氧化碳

Abstract: Au-CuO/TiO2 and Au/TiO2 catalysts were prepared by the deposition-precipi tation method. The influence of preparation conditions such as deposition temper ature, deposition pH, calcination temperature, and Cu/Au molar ratio on the cata lytic performance was evaluated. Au-CuO/TiO2 has higher catalytic activity a nd stability than Au/TiO2 in the removal of H2 from CO2-rich gases. The influence of treatment order of reduction and H2S poisoning on the catalytic a ctivity was also studied. The Au-CuO/TiO2 catalyst is more sensitive to t he treatment than the Au/TiO2 catalyst, which shows that an Au-Cu alloy m ay be formed in the Au-CuO/ TiO2 catalyst after reduction.

Key words: gold, copper oxide, titania, hydrogen removal, carbon dioxide