| La_2O_3-SnO_2材料乙醇气敏性能与催化活性间关系 |
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| 引用本文： | 詹自力,谢英男,潘丽华,郭新勇,蒋登高.La_2O_3-SnO_2材料乙醇气敏性能与催化活性间关系[J].电子元件与材料,2008,27(3):19-21. |
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| 作者姓名： | 詹自力 谢英男 潘丽华 郭新勇 蒋登高 |
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| 作者单位： | 1. 郑州大学,化工学院,河南,郑州,450001
2. 河南大学,特种功能材料重点实验室,河南,开封,475001 |
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| 基金项目： | 河南省科技攻关项目
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河南省科技攻关项目 |
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| 摘 要： | 通过测量La2O3-SnO2的气敏性能和催化活性,考察了La2O3对SnO2气敏性能和催化性能的影响,同时讨论了该材料对甲烷(CH4)和乙醇(C2H5OH)的灵敏度与其催化氧化反应间的关系。结果表明:300℃时,掺杂w(La2O3)为3%时,可使乙醇的转化率从84.5%提高到100%,对体积分数为1×10-4的乙醇的灵敏度由11.06提高到53.22。说明目标气体的反应活性越高,其灵敏度也越高。掺杂La2O3提高乙醇气体的灵敏度的原因是因为增加了SnO2表面乙醇反应中的耗氧率。
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| 关 键 词： | 无机非金属材料 气敏性能 催化性能 掺杂 SnO2 |
| 文章编号： | 1001-2028(2008)03-0019-03 |
| 修稿时间： | 2007年10月7日 |
Relationship between the ethanol gas-sensing property and catalytic activity of La_2O_3-SnO_2 material |
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| ZHAN Zi-li,XIE Ying-nan,PAN Li-hua,GUO Xin-yong,JIANG Deng-gao.Relationship between the ethanol gas-sensing property and catalytic activity of La_2O_3-SnO_2 material[J].Electronic Components & Materials,2008,27(3):19-21. |
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| Authors: | ZHAN Zi-li XIE Ying-nan PAN Li-hua GUO Xin-yong JIANG Deng-gao |
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| Affiliation: | ZHAN Zi-li1,XIE Ying-nan1,PAN Li-hua1,GUO Xin-yong2,JIANG Deng-gao1(1.College of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China,2.Laboratory for Special Functional Material,Henan University,Kaifeng 475001,Henan Province,China) |
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| Abstract: | The effects of La2O3 on the gas-sensing properties and catalytic properties of SnO2 were investigated by measuring the gas-sensing and catalytic properties of La2O3-SnO2 material.The relationship between the catalytic oxidation reaction and sensitivity for CH4 and C2H5OH was discussed.The conversion rate of C2H5OH increases from 84.5% to 100%,and the sensitivity to 1×10-4 C2H5OH(volume fraction) increases from 11.06 to 53.22 at 300 ℃ by doping 3% La2O3(mass fraction).The results show that the higher the reaction activity of target gas,the higher the sensitivity is.The enhancement of sensitivity of La2O3-doped sensor to C2H5OH is attributed to increase of oxygen consumption rate by the catalytic oxidation reaction on the surface of SnO2. |
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| Keywords: | non-metallic inorganic material gas-sensing property catalytic property doping SnO2 |
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