| Cu离子A位掺杂对LaSrCoO4复合氧化物氧化性能的影响 |
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| 引用本文： | 张雪黎,罗来涛,夏梦君.Cu离子A位掺杂对LaSrCoO4复合氧化物氧化性能的影响[J].化学研究与应用,2007,19(7):779-783. |
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| 作者姓名： | 张雪黎 罗来涛 夏梦君 |
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| 作者单位： | 1. 南昌大学应用化学研究所,江西,南昌,330031;江西信息应用职业技术学院,江西,南昌,330043
2. 南昌大学应用化学研究所,江西,南昌,330031 |
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| 摘 要： | 采用聚丙烯酰胺法制备了La1-xCuxSrCoO4(x=0.2-0.8)复合氧化物,考察了Cu离子掺杂量(x)对CO及C3H8氧化反应活性的影响,并运用XRD、IR、TPR和TPD等多种手段对复合氧化物催化剂进行了表征。结果表明,催化剂活性随x的变化而变化,Cu部分取代A位La能提高LaSrCoO4催化剂的CO及C3H8氧化反应活性,当x=0.4时La1-xCuxSrCoO4催化剂的晶格氧和Co3 含量较多,晶格氧的活动性较高,催化活性最佳。
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| 关 键 词： | Cu离子 A位掺杂 钴系类钙钛矿 氧化反应 |
| 文章编号： | 1004-1656(2007)07-0779-05 |
| 修稿时间： | 2007年1月17日 |
Effects of A-site adulteration of Cu ions on oxidation properties of LaSrCoO4 mixed oxides |
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| ZHANG Xue-li,LUO Lai tao,XIA Meng-jun.Effects of A-site adulteration of Cu ions on oxidation properties of LaSrCoO4 mixed oxides[J].Chemical Research and Application,2007,19(7):779-783. |
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| Authors: | ZHANG Xue-li LUO Lai tao XIA Meng-jun |
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| Abstract: | A series of La1-xCuxSrCoO4(x=0.2-0.8)mixed oxides had been prepared by the polyacrylamide gel method and the effects of doped amount(x) of Cu ions on oxidation properties of LaSrCoO4 mixed oxides were investigated. The prepared samples were characterized by XRD, IR, TPR and TPD. The results showed that activities of the catalysts for CO and C3H8 oxidation varied with variation of x value. The catalytic performance of La1-xCuxSrCoO4 could improve when part La ions of A-sites was replaced by Cu ions .In comparison the LaSrCoO4 catalyst, the activity of La0.6Cu0.4SrCoO4 catalyst was higher. This was explained in terms of the increase in mobile lattice oxygen and content of Co3 ions. |
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| Keywords: | Cu ions the like- pervosikte of Co series oxidative reaction |
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