| 负载型金催化剂催化CO氧化的性能研究 |
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| 引用本文： | 陈宗杰,陈先明. 负载型金催化剂催化CO氧化的性能研究[J]. 天然气化工, 2011, 36(1) |
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| 作者姓名： | 陈宗杰 陈先明 |
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| 作者单位： | 湖北省化学研究院,湖北,武汉,430074 |
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| 摘 要： | 采用沉积沉淀法制备了金催化剂(Au/Fe2O3),考察了其在常温常湿下对CO的氧化反应作用及其自身的稳定性。结果表明,低负载量的金催化剂同样有很高的活性;前驱体种类,焙烧温度及时间,沉淀剂种类,金含量等因素对催化剂的活性有较大影响。n(Au)/n(Au+Fe)为0.72%、焙烧温度250℃～350℃时制得的催化剂同样具有很高的活性和抗水性,于25℃连续加入饱和水蒸汽反应20h可保持CO完全转化。
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| 关 键 词： | 金催化剂 一氧化碳 氧化 消除 抗水性 |
Study on catalytic performances of supported gold catalysts for CO oxidation |
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| CHEN Zong-jie,CHEN Xian-ming. Study on catalytic performances of supported gold catalysts for CO oxidation[J]. Natural Gas Chemical Industry, 2011, 36(1) |
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| Authors: | CHEN Zong-jie CHEN Xian-ming |
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| Abstract: | The catalytic performances of Au/Fe2O3 catalysts prepared by deposition-precipitation for CO oxidation at ambient temperature and moisture were studied.It was found that low gold loading Au/Fe2O3 catalysts exhibited high activity for the reaction and the activity of the catalysts was greatly changed with the variation of the precursor,precipitant,calcination temperature,and Au loading amount.The Au/Fe2O3 catalyst with an Au/(Au+Fe) atomic ratio of 0.72 % prepared by calcining at 250-350℃ in air for 4h showed the highest activity and the best ability of resisting moisture,over which,even though the feed gas saturated with water vapor,CO conversion could reach 100% for at least 20h at 25℃. |
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| Keywords: | gold catalyst carbon monoxide oxidation elimination moisture resistance |
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