邹旭华,段雪.焙烧条件对金催化剂的结构及其催化CO氧化性能的影响[J].分子催化,2001,(4):246-250
焙烧条件对金催化剂的结构及其催化CO氧化性能的影响
Effects of Calcination Conditions on Structure of Supported Gold Catalysts and Catalytic Performance for CO Oxidation
  修订日期:2000-11-14
DOI:
中文关键词:  负载型金属化剂 结构 一氧化碳 催化氧化 催化性能 固载法 金 焙烧 共沉淀法 金属有机配合物
英文关键词:Supported gold catalyst,Structure,Carbon monoxide,Catalytic oxidation
基金项目:国家自然科学基金资助项目 ( 2 98730 41)
邹旭华  段雪
[1]烟台大学应用催化研究所,山东烟台264635 [2]北京化工大学应用化学系,北京100029
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中文摘要:
      采用共沉淀法和金属有机配合物固载法,分别制备了负载型金催化剂,并考察了焙烧条件对其催化CO氧化性能的影响。实验结果表明,焙烧温度和时间对催化剂的结构和活性的影响显著,不同的金属氧化物负载的金催化剂具有不同的最佳焙烧温度。DTA-TG分析结果确定了催化剂稳定结构的形成温度;XRD测试结果显示,在最佳焙烧条件下得到的催化剂,其载体为具有一定结晶度的金属氧化物。
英文摘要:
      Metal oxide supported gold catalysts were prepared by coprecipitation and organo gold complex grafting method, respectively. The effect of calcination conditions on catalytic performance for CO oxidation over these catalysts was investigated. It was found that calcination conditions have remarkable effects on the structure and activity of the catalysts and different metal oxide supports have different optimum calcination temperatures. DTA TG results are conducive to the determination of the temperature at which the catalysts form the suitable structure. XRD measurements of the catalysts show that the supports of the catalysts with high activity are in a state of poorly crystallized metal oxide.
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