| Ni助剂对Pt/Ce-SBA-15催化CO氧化反应性能的影响 |
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| 引用本文： | 蔡国辉,洪惠云,王丽华,兰瑞芳,郑瑛,魏可镁.Ni助剂对Pt/Ce-SBA-15催化CO氧化反应性能的影响[J].石油化工,2011,40(6):585-589. |
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| 作者姓名： | 蔡国辉 洪惠云 王丽华 兰瑞芳 郑瑛 魏可镁 |
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| 作者单位： | 1. 福州大学化肥催化剂国家工程研究中心,福建福州,350002
2. 福建师范大学化学与材料学院,福建福州,350007 |
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| 基金项目： | 国家科技部支撑计划项目(2007BAE08B01); 福建省教育厅资助项目(JA09050) |
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| 摘 要： | 以三嵌段共聚物P123为模板剂、正硅酸乙酯为硅源,采用溶胶凝胶法,通过微波辅助加热实现了SBA-15分子筛和Ce掺杂的Ce-SBA-15分子筛的快速合成;通过XRD,XPS,UV-Vis DRS等手段对合成的分子筛进行了表征。表征结果显示,引入Ce得到的骨架掺杂Ce-SBA-15分子筛的有序度较高,Ce以Ce3+和Ce4+两种形式存在于分子筛中。以合成的分子筛为载体制备负载型Pt催化剂,并以CO氧化为模型反应,考察了Ni助剂的添加对催化剂活性的影响。实验结果表明,以Ce-SBA-15分子筛为载体的Pt催化剂比以SBA-15分子筛为载体的Pt催化剂具有更高的CO氧化活性,且助剂Ni的添加能进一步提高催化剂的活性;Pt-Ni/Ce-SBA-15催化剂在160℃可使CO完全转化,而Pt/SBA-15催化剂在245℃时才能使CO完全转化。
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| 关 键 词： | SBA-15分子筛 铈 铂催化剂 镍助剂 一氧化碳氧化反应 |
Effect of Ni Promoter on Pt/Ce-SBA-15 Catalyst Used in CO Oxidation |
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| Cai Guohui,Hong Huiyun,Wang Lihua,Lan Ruifang,Zheng Ying,Wei Kemei.Effect of Ni Promoter on Pt/Ce-SBA-15 Catalyst Used in CO Oxidation[J].Petrochemical Technology,2011,40(6):585-589. |
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| Authors: | Cai Guohui Hong Huiyun Wang Lihua Lan Ruifang Zheng Ying Wei Kemei |
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| Affiliation: | Cai Guohui1,Hong Huiyun2,Wang Lihua2,Lan Ruifang2,Zheng Ying2,Wei Kemei1(1.National Engineering Research Center of Chemical Fertilizer Catalyst,Fuzhou University,Fuzhou Fujian 350002,China,2.School of Chemistry and Materials Science,Fujian Normal University,Fuzhou Fujian 350007,China) |
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| Abstract: | SBA-15 and Ce-SBA-15 molecular sieves were synthesized by microwave assistant sol-gel method with nonionic triblock co-polymer surfactant P123 as the template and tetraethyl orthosilicate as the silicon source,and were characterized by means of XRD,XPS and UV-Vis DRS.The results showed that ordered degree of Ce-SBA-15 molecular sieves was higher than that of SBA-15 molecular sieves and the cerium species existed in the forms of both Ce4+and Ce3+.With CO oxidation as the model reaction,the influences of Ni p... |
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| Keywords: | SBA-15 molecular sieve cerium platinum catalyst nickel promoter carbon monoxide oxidation reaction |
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