摘要
采用等体积浸渍法制备了1.0%Au-CuO/Al2O3催化剂,考察了不同Au与Cu的原子比对催化剂在富氢气氛下选择氧化CO性能的影响,并对该催化剂稳定性进行了初步测试.结果表明,该催化剂在30℃～85℃范围内可以将CO浓度由1.0%降至0.005%以下.催化剂在80℃,模拟气氛条件下10 h内失活很小.通过BET、XRD、UV-vis漫反射等表征发现:催化剂体系中Cu以CuO的形式存在,较小粒子的Au在该反应中表现出较好的活性与选择性.
The 1.0% Au-CuO/Al2O3 catalyst is prepared by incipient wetness impregnation method. The effects of different atom ratio Au to Cu on the activity are investigated by selective oxidation of CO in H2-rich stream. The catalyst can eliminate CO effectively from 1.0 % to 0. 005% at the temperature from30 ℃ to 85 ℃. The stability of the catalyst is test at the temperature of 80℃; the CO conversion and selectivity are maintained for more than 10 h with very slight loss of activity. The catalysts characterization by BET, XRD, UV-vis DRS show that the smaller gold particle is benefit to this reaction.
出处
《烟台大学学报（自然科学与工程版）》
CAS
北大核心
2011年第1期39-42,共4页
Journal of Yantai University(Natural Science and Engineering Edition)
基金
山东省优秀中青年科学家科研奖励基金资助项目(2007BS04033)
