In_2O_3基气敏材料的催化性能及敏感机理研究  

Study on catalytic property and gas sensing mechanism of indium oxide-based gas-sensing materials

作　　者：常剑[1] 詹自力[2] 蒋登高[2] 李国鹏[3] 黄芳[4] 曹占峰[5] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249 [2]郑州大学化工学院,河南郑州450002 [3]大港油田公司油气开发处,天津300280 [4]大港油田公司勘探开发研究院,天津300280 [5]大港油田公司第六采油厂,天津061100

出　　处：《电子元件与材料》2007年第9期24-26,共3页Electronic Components And Materials

基　　金：河南省重点科技攻关项目(No.0124090444)

摘　　要：采用微反应器–气相色谱联用装置和气敏性能测试设备,评价了不同掺杂的In2O3材料对异丁烷的催化及气敏性能。研究表明:掺杂贵金属(Pd、Pt、Au等)可大幅度提高材料对异丁烷的催化活性,灵敏度也由2.99提高到4以上;而掺杂碱性金属氧化物则降低了材料的催化活性和灵敏度。材料的气敏性能和催化性能存在密切的关系。并浅析了材料的敏感机理。The catalytic property and gas sensitivity of different dopant indium oxide to iso-butane were investigated by micro-reactor and gas chromatography as well as gas sensing property testing apparatus. The results show that the sensitivity of indium oxide doping noble metal to iso-butane is increased from 2.99 to above 4, for the dopant could improve the catalytic property of indium oxide. The sensitivity of indium oxide doping basic metal oxide to iso-butane is decreased, because these materials decreased the catalytic activity. Gas-sensing performance is intrinsically depended on the catalytic property. Gas-sensing mechanism of indium oxide is also revealed briefly.

关 键 词：无机非金属材料 氧化铟 气敏材料 催化性能 气敏性能 敏感机理 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]