| 负载型金催化剂的制备及其性能研究 |
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| 引用本文： | 海锋,贾美林,照日格图,刘雪松.负载型金催化剂的制备及其性能研究[J].环境科学与技术,2009,32(3). |
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| 作者姓名： | 海锋 贾美林 照日格图 刘雪松 |
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| 作者单位： | 1. 内蒙古师范大学化学与环境科学学院,内蒙古,呼和浩特,010022
2. 浙江师范大学化学与生命科学学院,浙江,金华,321004 |
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| 基金项目： | 国家自然科学基金，教育部新世纪优秀人才支持计划，内蒙古自治区自然科学基金重点项目 |
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| 摘 要： | 采用水溶液沉淀法制备了MgO/CeO2混合载体,并采用沉积-沉淀法制备了相应Au/MgO/CeO2催化剂,以CO氧化反应作为表征反应,考察了载体的结构对催化剂性能的影响,并对催化剂进行了AAS、XRD、XPS和TPR表征,分析了影响催化剂活性的原因。实验结果表明:载体的结构对催化剂的活性有一定影响,CeO2显著提高催化剂的活性,MgO对催化剂活性的影响不明显;XPS和TPR测试结果表明,催化剂中均含有氧化态的金,并且和催化剂活性相关,说明Auδ(+0<δ<3)是催化剂的活性相组分。
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| 关 键 词： | 金催化剂 沉淀-沉积法 MgO/CeO2 CO催化氧化 |
Preparation of Support Gold Catalyst and Its Catalytic Performance |
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| HAI Feng,JIA Mei-lin,ZHAORIGETU,LIU Xue-song.Preparation of Support Gold Catalyst and Its Catalytic Performance[J].Environmental Science and Technology,2009,32(3). |
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| Authors: | HAI Feng JIA Mei-lin ZHAORIGETU LIU Xue-song |
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| Institution: | HAI Feng1,JIA Mei-lin1,ZHAORIGETU1,LIU Xue-song2 (1.College of Chemistry & Environmental Science,Inner Mongolia Normal University,Huhhot 010022,China,2. College of Chemistry & Life Science,Zhejiang Normal University,Jinhua 321004,China) |
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| Abstract: | Aqueous precipitation and deposition-precipitation method were used to prepare the composite oxide MgO/CeO2 supports and Au/MgO/CeO2 catalysts respectively. The effect of structure of supports on the catalyst activity was investigated. The catalytic combustion of CO was taken as the probe reaction for comparing the catalyst activity. AAS,XRD,XPS and TPR were carried out to analyze the influence factor on the catalysts activity. Results indicated that the catalytic activity was affected by the structure of s... |
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| Keywords: | MgO/CeO2 |
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