In_2O_3基酒敏材料的催化及气敏性能  

Catalytic and gas-sensing property of indium oxide to ethanol

作　　者：常剑[1] 詹自力[2] 蒋登高[2] 高金森[1] 

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,郑州450002

出　　处：《功能材料与器件学报》2007年第5期465-470,共6页Journal of Functional Materials and Devices

基　　金：河南省重点科技攻关项目(No.0124090444)

摘　　要：采用微反-气相色谱联用装置和气敏性能测试设备,系统评价了不同粒径、不同掺杂的In2O3材料对乙醇的催化、气敏性能。研究表明,采用纳米材料可将乙醇灵敏度由6.0提高到16.0,掺杂碱性金属氧化物将灵敏度提高到14.0;掺杂贵金属可大幅度提高材料对乙醇的催化活性,但降低对乙醇的灵敏度。材料的气敏性能和催化性能存在密切的联系,浅析了材料对乙醇的敏感机理。The catalytic property and gas sensitivity of indium oxide with different particle size and various dopants to ethanol were investigated systematically in micro-reactor,gas chromatography and gas sensing testing apparatus.The results showed that,by employing nano-indium oxide,the sensitivity to ethanol could be increased from 6.0 to 16.0.The sensitivity of indium oxide doped with basic metal oxide to ethanol was increased from 6.0 to 14.0.The sensitivity of indium oxide doped with noble metal to ethanol decrease because of its too large catalytic activity.Gas sensing performance was intrinsically depended on the catalytic property.Ethanol gas sensing mechanism of indium oxide was analyzed briefly.

关 键 词：IN2O3 气敏材料 催化性能 气敏性能 

分 类 号：TN304.21[电子电信—物理电子学]