Cr_2O_3-Al_2O_3甲烷敏感材料的研究  

Study on Cr_2O_3-Al_2O_3 sensitive materials for CH_4 gas

作　　者：郭迎[1] 徐凌[2] 程迎国[2] 李振仁[2] 

机构地区：[1]黑龙江省政务信息化管理服务中心,黑龙江哈尔滨150001 [2]中国电子科技集团公司第四十九研究所,黑龙江哈尔滨150001

出　　处：《传感器与微系统》2009年第8期39-42,共4页Transducer and Microsystem Technologies

摘　　要：采用室温固相合成法制备了不同含量的Cr2O3-Al2O3系列敏感材料,试验研究了Cr2O3催化剂含量和焙烧温度对甲烷气体催化活性的影响,并考察了甲烷传感器灵敏度大小和敏感材料的长期稳定性。结果表明:该法制备的Cr2O3-Al2O3系列敏感材料具有较好的低温催化活性,且随Cr2O3含量的增加,催化剂的低温活性增强。综合考虑敏感材料的催化活性、灵敏度和稳定性,400℃焙烧制备的Cr2O3含量为30%的Cr2O3-Al2O3敏感材料对甲烷低温催化燃烧有较好的催化性能。A series of Cr2O3-Al2O3 sensitive materials are prepared via solid-state reaction. The Influence of Cr2O3 catalytic contents and baked temperature on catalytic performance are studied. In addition, the size of sensitivity and the long-term stability of sensitive materials are investigated. The results show that the sensitive materials with higher Cr2O3 contents have higher catalytic activity in low temperature. Considering catalytic activity,sensitivity and the long-term stability of sensitive materials, the 30 % Cr203-AlO3 baked at 400 ℃ is found to be the best sensitive materials for methane low temperature catalytic reaction.

关 键 词：敏感材料 室温固相反应 催化活性 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]