| 稀土氧化物对水煤气变换催化剂Au/CeO2性能的影响 |
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| 引用本文： | 杨申永,詹瑛瑛,陈崇启,曹彦宁,林性贻,郑起.稀土氧化物对水煤气变换催化剂Au/CeO2性能的影响[J].催化学报,2009,30(7). |
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| 作者姓名： | 杨申永 詹瑛瑛 陈崇启 曹彦宁 林性贻 郑起 |
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| 作者单位： | 福州大学化肥催化剂国家工程研究中心,福建福州,350002 |
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| 基金项目： | 国家自然科学基金(20771025);;福建省教育厅A类科技项目(JA08021) |
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| 摘 要： | 采用沉积沉淀法制备了一系列Au/CeO2-RE2O3(RE=Nd,Eu,Sm,Y)和不同Y2O3添加量的Au/CeO2-Y2O3水煤气变换(WGS)反应催化剂,通过N2吸附-脱附、X射线粉末衍射、H2程序升温还原和Raman光谱等手段对催化剂进行了表征.结果表明,Y2O3的引入能有效提高Au/CeO2体系WGS反应的活性和稳定性,其中Ce/Y摩尔比为35时催化剂活性和稳定性最高.这是由于该添加量的Y2O3能最大程度提高Au/CeO2催化剂的结构稳定性,形成较高表面氧缺陷,有效增强Au与载体间相互作用.
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| 关 键 词： | 稀土氧化物 氧化钇 金 氧化铈 负载型催化剂 水煤气变换反应 稳定性 |
Effect of Rare Earth Oxide on the Catalytic Performance of Au/CeO2 Catalyst for Water-Gas Shift Reaction |
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| YANG Shenyong,ZHAN Yingying,CHEN Chongqi,CAO Yanning,LIN Xingyi,ZHENG Qi.Effect of Rare Earth Oxide on the Catalytic Performance of Au/CeO2 Catalyst for Water-Gas Shift Reaction[J].Chinese Journal of Catalysis,2009,30(7). |
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| Authors: | YANG Shenyong ZHAN Yingying CHEN Chongqi CAO Yanning LIN Xingyi ZHENG Qi |
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| Abstract: | A series of Au/CeO2-RE2O3 (RE = Nd, Eu, Sm, Y) catalysts and Au/CeO2-Y2O3 catalysts with different Y2O3 contents were prepared by a deposition-precipitation method. The as-prepared catalysts were investigated by N2 adsorption-desorption, X-ray diffraction, H2 temperature-programmed reduction, and Raman spectroscopy, and the catalytic performance was evaluated using water-gas shift (WGS) reaction. The results showed that the catalyst activity and stability are obviously enhanced with the addition of Y2O3, an... |
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| Keywords: | rare earth oxide yttria gold ceria supported catalyst water-gas shift reaction stability |
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