| 乌力吉扎日嘎拉,阿古拉,萨嘎拉,萨茹拉,徐爱菊,照日格图.负载型介孔Au/NiO催化剂的制备、表征与光谱特性研究[J].分子催化,2013,(1):30-36 |
| 负载型介孔Au/NiO催化剂的制备、表征与光谱特性研究 |
| The Study on Preparation、Characterization of Mesoporous Au/NiO Catalysts and Their Spectral Properties |
| 投稿时间：2012-11-27 修订日期：2013-01-18 |
| DOI： |
| 中文关键词: Au/NiO催化剂 光谱性质 丙烷 氧化脱氢 |
| 英文关键词:Au/NiO catalyst Spectral property Propane Oxidative dehydrogenation |
| 基金项目:内蒙古自治区重大基础研究开放课题（2010KF02），内蒙古自然科学基金博士基金(2010BS0806)，内蒙古自然科学基金（2012MS0219） |
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| 中文摘要: |
| 采用还原法和沉积-沉淀法制备了介孔Au/NiO催化剂，并运用XRD、N2吸附-脱附、UV-Vis、FTIR、和XPS等方法对其进行了表征，考察了制备方法对Au/NiO催化剂物理化学性质和丙烷氧化脱氢制丙烯反应催化性能的影响。实验结果表明Au/NiO催化剂具有较好的低温催化活性，而还原法制备的催化剂催化性能好于沉积-沉淀法制备的催化剂，反应温度350 ℃时，还原法制备的Au/NiO催化剂的丙烷转化率和丙烯选择性分别达到25.1%和39.8%。制备方法对表面Au的价态分布、颗粒大小及分散度均有影响。催化剂表面Auδ 物种是催化剂的主要活性组分。 |
| 英文摘要: |
| In this work, The Au/NiO catalysts were prepared by deposition-precipitation and chemical reduction methods and characterized by XRD, AAS, BET, UV-Vis, FTIR and XPS. The influence of preparation methods on their physical and chemical properties, as well as on their catalytic behavior for the oxidative dehydrogenation of propane to propene reaction was investigated. The results show that the Au/NiO catalysts have a good catalytic activity at low temperature and the catalyst prepared by chemical reduction method has higher catalytic performance than the catalyst prepared by deposition-precipitation. 25.1% propane conversion and 39.8% propene selectivity were obtained over the catalyst prepared by chemical reduction method at 350癈. The preparation method affects the state distribution, particle size and dispersity of surface Au. The surface Auδ species of the catalyst are regarded as the catalytic active component. |
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