仪表技术与传感器
儀錶技術與傳感器
의표기술여전감기
INSTRUMENT TECHNIQUE AND SENSOR
2009年
z1期
107-109,152
,共4页
MnO_2%敏感材料%室温固相反应%催化活性
MnO_2%敏感材料%室溫固相反應%催化活性
MnO_2%민감재료%실온고상반응%최화활성
MnO_2%sensitive materials%solid-state reaction%catalytic activity
采用室温固相合成法制备了不同含量的MnO_2/Al_2O_3系列敏感材料,试验研究了MnO_2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及敏感材料的长期稳定性.结果表明:该法制备的MnO_2/Al_2O_3系列敏感材料具有较好的低温催化活性,且随MnO_2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MnO_2含量为30%的MnO_2/Al_2O_3敏感材料对甲烷低温催化燃烧有较好的催化性能.
採用室溫固相閤成法製備瞭不同含量的MnO_2/Al_2O_3繫列敏感材料,試驗研究瞭MnO_2催化劑含量和焙燒溫度對甲烷氣體催化活性的影響,併攷察瞭甲烷傳感器靈敏度大小及敏感材料的長期穩定性.結果錶明:該法製備的MnO_2/Al_2O_3繫列敏感材料具有較好的低溫催化活性,且隨MnO_2含量的增加,催化劑的低溫活性增彊.綜閤攷慮敏感材料的催化活性、靈敏度和穩定性,400 ℃焙燒製備的MnO_2含量為30%的MnO_2/Al_2O_3敏感材料對甲烷低溫催化燃燒有較好的催化性能.
채용실온고상합성법제비료불동함량적MnO_2/Al_2O_3계렬민감재료,시험연구료MnO_2최화제함량화배소온도대갑완기체최화활성적영향,병고찰료갑완전감기령민도대소급민감재료적장기은정성.결과표명:해법제비적MnO_2/Al_2O_3계렬민감재료구유교호적저온최화활성,차수MnO_2함량적증가,최화제적저온활성증강.종합고필민감재료적최화활성、령민도화은정성,400 ℃배소제비적MnO_2함량위30%적MnO_2/Al_2O_3민감재료대갑완저온최화연소유교호적최화성능.
A series of MnO_2/Al_2O_3 sensitive materials were prepared via solid-state reaction. The Influence of MnO_2 catalytic contents and baked temperature on catalytic performance were studied. In addition, the size of sensitivity and the long-term stability of sensitive materials were investigated. The results show that the sensitive materials with higher MnO_2 contents have higher catalytic activity in low temperature. Considering catalytic activity,sensitivity and the long-term stability of sensitive materials,the 30% MnO_2 /Al_2O_3 baked at 400 ℃ is found to be the best sensitive materials for methane low temperature catalytic reaction.
