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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：校长助理
其他任职：精细化工国家重点实验室副主任，辽宁省低碳资源高值化利用重点实验室主任
性别：男
毕业院校：中科院山西煤化所
学位：博士
所在单位：化工学院
学科：工业催化. 化学工艺. 能源化工
办公地点：大连市凌工路2号大连理工大学西部校区化工楼，邮编：116024
联系方式：0411-84986112
电子邮箱：anhuilu@dlut.edu.cn
Porous silica as supports for controlled fabrication of Au/CeO2/SiO2 catalysts for CO oxidation: Influence of the silica nanostructures
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论文类型：期刊论文
发表时间：2012-08-01
发表刊物：MICROPOROUS AND MESOPOROUS MATERIALS
收录刊物：SCIE、EI
卷号：158
页面范围：7-12
ISSN号：1387-1811
关键字：Porous silica; Au/CeO2/SiO2; CO oxidation; HMS
摘要：Porous silica with different nanostructures, namely two-dimensional hexagonal SBA-15, three-dimensional cubic KIT-6 and hierarchical monolith silica (HMS), were used as supports to fabricate gold catalysts using a liquid-phase deposition-precipitation method. Pre-loading of ceria on porous silica can significantly improve the dispersion of the subsequently introduced gold nanoparticles and the catalytic activity of the final composite (Au/CeO2/SiO2) catalysts in CO oxidation. The composite catalysts were characterized by N-2 adsorption, X-ray diffraction. The results indicate that different nanostructures of silica imposed significant influence on the catalytic activity of Au/CeO2/SiO2 catalysts. Gold catalyst supported on HMS exhibited the highest activity for the conversion of CO to CO2 with a complete conversion (T-100%) at a temperature of 60 degrees C and at a space velocity of 80,000 mL g(cat)(-1) h(-1), whereas T-100% shifted to 120-130 degrees C for SBA-15 and KIT-6 supported gold catalysts. (C) 2012 Elsevier Inc. All rights reserved.