Au/TS-1选择性催化氧化NO性能研究  

Catalytic performance of Au/TS-1 in selective oxidation of nitrogen monoxide

作　　者：阳鹏飞[1,2] 周继承[1] 李德华[1] 任文明[1] 

机构地区：[1]湘潭大学化工学院"绿色催化与反应工程"湖南省普通高校重点实验室,湖南湘潭411105 [2]南华大学化学化工学院,湖南衡阳421001

出　　处：《燃料化学学报》2010年第1期80-84,共5页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(20676111);湖南省教育厅重点项目(07A073);湖南省高校科技创新团队支持计划资助

摘　　要：制备了负载型Au/TS-1催化剂,采用XRD、SEM、TEM等方法进行了表征,并将其应用于选择性催化氧化NO反应,考察了各工艺条件对NO催化氧化效率的影响。结果表明,Au/TS-1催化剂具有良好的结晶度,Au粒子成功地负载在TS-1上。该催化剂在选择性催化氧化NO反应中具有优异的低温催化氧化活性,在NO体积分数为1×10-3,O2含量为10%,空速为5 000 h-1,Au的负载量为1.0%,180℃时,NO的氧化率高于55%(此时最适宜吸收处理);260℃时,氧化率可达到78%。Supported Au/TS-1 catalysts were prepared and characterized by XRD,SEM and TEM.Their performance in the catalytic oxidation of nitrogen monoxide was evaluated and the effect of reaction conditions on NO conversion was examined.The results indicated that Au granules are successfully loaded on the molecular sieve TS-1 and the catalysts Au/TS-1 obtained exhibit good crystallinity.The catalysts Au/TS-1 exhibit excellent performance in the selective catalytic oxidation of nitrogen monoxide at low temperature.Over the catalyst with an Au loading of 1.0%,with the molar fractions of NO and O2 in the feed being 1×10-3 and 0.1,respectively,and under a space velocity（GHSV） of 5000h-1,the conversion of NO reaches 55% at 180℃ and 78% at 260℃.

关 键 词：一氧化氮 选择性催化氧化 Au/TS-1 

分 类 号：X701[环境科学与工程—环境工程]