Au/SBA-15的制备及其催化CO氧化反应性能

催化学报 , 2010, 31(7): 839-845. doi: 10.3724/SP.J.1088.2010.00111

Au/SBA-15的制备及其催化CO氧化反应性能

苏继新 ^1, , 张慎平 ^2, , 马丽媛 ^3, , 屈文 ^4, , 张明博 ^5,

1.山东大学环境科学与工程学院,山东,济南,250100

2.山东大学环境科学与工程学院,山东,济南,250100

3.山东大学环境科学与工程学院,山东,济南,250100

4.山东大学环境科学与工程学院,山东,济南,250100

5.山东大学环境科学与工程学院,山东,济南,250100

基金项目: 国家高技术研究发展计划(863计划)(2006AA03Z222)

关键词：金 , SBA-15分子筛 , 负载型催化剂 , 一氧化碳 , 低温氧化 , 循环稳定性 , 热稳定性

Preparation of Au/SBA-15 and Its Catalytic Activity for CO Oxidation

以SBA-15为载体,采用沉积沉淀法制备了纳米Au催化剂,研究了不同预处理条件对Au在载体表面状态的影响,考察了催化剂样品催化CO氧化性能.以高分辨率透射电子显微镜、N2吸附、X射线衍射、紫外-可见漫反射吸收谱、X射线光电子能谱和电感耦合等离子体发射光谱等手段对催化剂的结构和表面性质进行了表征.结果表明,经还原焙烧处理后的Au/SBA-15催化剂热稳定性较好,Au在SBA-15孔道表面呈高分散状态,样品在CO氧化反应中表现出优异的低温催化活性和高温稳定性,同时具有优异的抗烧结性能和良好的循环稳定性.

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Au/SBA-15的制备及其催化CO氧化反应性能

Preparation of Au/SBA-15 and Its Catalytic Activity for CO Oxidation

参考文献