| 催化剂Au/CeO_2/MCM-41的制备及其活性研究 |
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| 引用本文： | 邱永福. 催化剂Au/CeO_2/MCM-41的制备及其活性研究[J]. 广东化工, 2011, 38(3): 49-51 |
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| 作者姓名： | 邱永福 |
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| 作者单位： | 东莞理工学院,化学与环境工程学院,广东,东莞,523808 |
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| 基金项目： | 广东省自然科学基金，国家自然科学基金，东莞理工学校青年自然科学基金 |
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| 摘 要： | 文章报道了一种新型催化剂Au/CeO2/MCM-41的制备,并对它的比表面积、晶体结构、表面元素价态、储释氧能力及催化活性进行表征。通过催化剂的活性测试,发现催化剂Au/CeO2/MCM-41对CO氧化具有很高的活性,但催化剂对煅烧温度比较敏感,随煅烧温度上升,催化活性下降很快,可能是因为一方面较高的温度煅烧使金纳米颗粒迅速长大,从而活性很快的下降;另一方面高温煅烧使催化剂发生烧结,从而比表面积下降引起活性的降低。
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| 关 键 词： | 催化剂 CO CeO2 MCM-41 |
Catalyst Au/CeO2/MCM-41: Synthesis and Characterization |
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| Oiu Yongfu. Catalyst Au/CeO2/MCM-41: Synthesis and Characterization[J]. Guangdong Chemical Industry, 2011, 38(3): 49-51 |
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| Authors: | Oiu Yongfu |
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| Affiliation: | Qiu Yongfu (Guangdong Provincial Key Laboratory of Distributed Energy Systems and College of Chemistry and Environmental Engineering,Dongguan University of Technology,Dongguan 523808,China.) |
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| Abstract: | High efficient catalyst Au/CeO2/MCM-41 was synthesized and its surface area,crystal structure,elemental valence state and surface oxygen reducing capacity and catalytic activity were characterized.We found that the catalytic activity of Au/CeO2/MCM-41 was high for CO oxidation,but decreased quickly with increasing calcined temperature,which ascribing to the aggregation of nano gold particles and decrease of specific surface area. |
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| Keywords: | CO CeO2 MCM-41 |
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