A novel four-way combining catalysts for simultaneous removal of exhaust
pollutants from diesel engine |
| |
Authors: | Jian Liu Jie Xu Zhen Zhao Aijun Duan Guiyuan Jiang and Yanni Jing |
| |
Institution: | State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China |
| |
Abstract: | A novel four-way combining catalysts containing double layers was applied to simultaneously remove four kinds of exhaust
pollutants (NOx, CO, HC and PM) emitted from diesel engine. The four-way catalysts were characterized using scanning electron
microscope (SEM) and Ultraviolet visible di use reflectance spectroscopy (UV-Vis DRS). Their catalytic performances were evaluated
by temperature-programmed reaction technology. The double layer catalysts could e ectively remove the four main pollutants. The
highest catalytic activity was given by the two-layered catalysts of La0:6K0:4CoO3/Al2O3 andW/HZSM-5. Under the simulated exhaust
gases conditions, the peak temperature of the soot combustion was 421°C, the maximal conversion of NO to N2 was 74%, the
temperature of the HC total conversion was 357°C, and the maximum conversion ratio of CO was 99%. |
| |
Keywords: | four-way combining catalyst diesel engine exhaust double layers perovskite oxides zeolite catalysts |
本文献已被 CNKI 万方数据 ScienceDirect PubMed 等数据库收录! |
| 点击此处可从《环境科学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《环境科学学报(英文版)》下载免费的PDF全文 |