摘要
应用原位合成技术制成了TS 1分子筛/堇青石整体式稀燃催化剂,用来转化稀燃汽油机NOx排放.采用X射线衍射(XRD)、电子显微镜(SEM)和感应耦合等离子体(ICP)等表征手段验证了分子筛薄层成功地生长在堇青石载体上,且催化剂具有好的热稳定性.在台架试验上,该稀燃催化器对NOx的转化效率可达4000,对HC和CO的转化效率也分别达到79. 400和27. 400.
Titanium silicalite (TS) was in-situ synthesized on the surface of honeycomb-shaped cordierite under hydrothermal conditions to reduce NO_x emissions of a lean-burn engine. XRD, SEM and ICP techniques confirmed that TS-1 zeolite crystals successfully grew on the surface of cordierite, and titanium atoms had gotten into the frameworks of TS-1 zeolite. Moreover, the catalyst had good heat resistance in the presence of water. Investigations on a lean burn engine showed that NO_x could be removed by using HC and CO in the exhaust gas as reducing agents. When the catalyst was used , the NO_x conversion could reach a maximum of 40~0_0. At the same time, the HC conversion was about 79.4~0_0, whereas the CO conversion was 27.4~0_0.
出处
《天津大学学报（自然科学与工程技术版）》
EI
CAS
CSCD
北大核心
2005年第4期294-297,共4页
Journal of Tianjin University：Science and Technology
基金
霍英东教育基金优选课题(94016)
国家自然科学基金重点项目(59936130
20233030)
中国博士后科学基金项目(200304322)
