| BaO含量对Ba改性Al2O3及其负载的Pt-Rh密偶催化剂性能的影响 |
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| 引用本文： | 姚艳玲,何胜楠,史忠华,龚茂初,陈耀强.BaO含量对Ba改性Al2O3及其负载的Pt-Rh密偶催化剂性能的影响[J].催化学报,2011,32(3):502-507. |
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| 作者姓名： | 姚艳玲 何胜楠 史忠华 龚茂初 陈耀强 |
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| 作者单位： | 四川大学化学学院绿色化学与技术教育部重点实验室,四川成都,610064 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研基金 |
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| 摘 要： | 采用胶溶法制备了不同BaO含量的Ba改性的Al2O3样品(Ba-Al2O3).采用低温N2吸附-脱附、X射线衍射和氨程序升温脱附对样品进行了表征.结果表明,BaO的添加量为8%时,Ba-Al2O3样品具有最佳的织构性质、最大的表面酸量和最强的表面酸性;经1273 K焙烧5 h后,其比表面积和孔体积分别为142 m2/g...
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| 关 键 词： | 氧化铝 氧化钡 铂 铑 密偶催化剂 热稳定性 丙烷 |
Effects of BaO Content on Properties of Ba-Modified Alumina and Catalytic Performance of Its Supported Pt-Rh Close-Coupled Catalysts |
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| YAO Yanling,HE Shengnan,SHI Zhonghua,GONG Maochu,CHEN Yaoqiang.Effects of BaO Content on Properties of Ba-Modified Alumina and Catalytic Performance of Its Supported Pt-Rh Close-Coupled Catalysts[J].Chinese Journal of Catalysis,2011,32(3):502-507. |
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| Authors: | YAO Yanling HE Shengnan SHI Zhonghua GONG Maochu CHEN Yaoqiang |
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| Institution: | YAO Yanling,HE Shengnan,SHI Zhonghua,GONG Maochu,CHEN Yaoqiang*Key Laboratory of Green Chemistry and Technology of Ministry of Education,College of Chemistry,Sichuan University,Chengdu 610064,Sichuan,China |
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| Abstract: | In order to improve catalytic activity and thermal resistance of close-coupled catalysts, Ba-modified alumina (Ba-Al2O3) with different BaO contents was prepared by the peptization method. All samples were characterized by low temperature N2 adsorption-desorption, X-ray diffraction, and NH3 temperature-programmed desorption. The results showed that the Ba-Al2O3 sample with 8% BaO exhibited the best textural properties, the largest acidic amount, and the strongest surface acidity. Its specific surface area a... |
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| Keywords: | alumina barium oxide platinum rhodium close-coupled catalyst thermal stability propane |
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