高等学校化学学报2001，Vol.22Issue(3)：431-434,4.
Au/ZnO催化剂的制备及常温常湿条件下CO氧化催化性能
Preparation of Au/ZnO Catalyst and Its Catalytic Performance for CO Oxida tion at Ambient Temperature and Moisture
摘要
Abstract
The catalytic performance of Au/ZnO catalysts prepared by a coprecipitation method for CO oxidation at ambient temperature and moisture was studied. It was found that the chemical composition, the activity and the stability of the catalysts were greatly changed with the variation of calcination temperature. The sample calcined at 240 ℃ showed the best stability, i.e. it can maintain CO complete conversion for 600 h. XRD, FTIR, TEM and UV-Vis results indicated that gold could be highly dispersed on the surface of ZnCO3 or ZnO, with the mean diameter of gold particle being 2—5 nm. The type of support was the main influencing factors on the stability of Au/ZnO catalysts, the stability of ZnO supported gold catalysts was better than that of the ZnCO3 supported gold samples. The smaller of ZnO particle and the bigger of SBET, the better of the stability of Au/ZnO catalysts was obtained.关键词
Au/ZnO催化剂/CO氧化/常温常湿/稳定性分类
化学化工引用本文复制引用
王桂英,李雪梅,白妮,张文祥,蒋大振,吴通好..Au/ZnO催化剂的制备及常温常湿条件下CO氧化催化性能 [J].高等学校化学学报,2001,22(3):431-434,4.基金项目
煤转化国家重点实验室开放基金资助. （）
