| 引用本文： |
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王跃,张凯琳,卓欧,李凝.载体对Au催化剂乙醇部分氧化制氢性能的影响[J].广西科学,2011,18(4):348-351. [点击复制]
- WANG Yue,ZHANG Kai-lin,ZHUO Ou,LI Ning.Effect of Support on Catalytic Performance of Au Catalyst for Partial Oxidation of Ethanol to Generate Hydrogen[J].Guangxi Sciences,2011,18(4):348-351. [点击复制]
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| 摘要: |
| 采用共沉淀制备方法分别制备Au/Al2O3、Au/ZnO、Au/CeO2、Au/Fe2O3催化剂,考察不同载体对乙醇部分氧化制氢性能的影响,并用XRD、H2-TPR、H2-TPD等对各催化剂的晶相结构、表面还原性、吸附性能等进行表征,考察载体对Au催化剂的活性和选择性的影响。结果表明,载体对Au催化剂的催化性能与H2的选择性能具有较大的影响,CeO2载体负载Au催化剂,活性组分Au与载体能形成较强的相互作用,表面存在较多的氧物种,并在乙醇部分氧化制氢反应中表现较好的活性和选择性,当反应温度为450℃时,乙醇转化率为96.0%,H2选择性达到86.3%。 |
| 关键词: 贵金属 载体 催化剂 |
| DOI： |
| 投稿时间：2011-01-07 |
| 基金项目:国家自然科学基金项目(21166006)资助 |
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| Effect of Support on Catalytic Performance of Au Catalyst for Partial Oxidation of Ethanol to Generate Hydrogen |
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WANG Yue, ZHANG Kai-lin, ZHUO Ou, LI Ning
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| (College of Chemical and Biological Engineering, Guilin University of Technology, Guilin, Guangxi, 541004, China) |
| Abstract: |
| A series of Au catalysts supported on Al2O3, ZnO, CeO2 and Fe2O3 were prepared by co-precipitation method, and the crystalline structure, surface reduction and adsorption properties of the catalysts were characterized by XRD, H2-TPR and H2-TPD techniques.At the same time, the catalytic activity and selectivity were investigated.The results showed that the supports had a great impact on Au catalysts.For the Au catalyst loaded on CeO2, the active component Au and the CeO2 carrier could form a strong interaction and there were more oxygen species on the surface of the catalyst.The Au/CeO2 catalyst revealed more excellent activity and selectivity for producing hydrogen from ethanol partial oxidation.When the reaction temperature was 450℃, the ethanol conversion rate and H2 selectivity reached 96.0% and 86.3%. |
| Key words: noble metal support catalyst |
