Wu L.,Kunming University of Science and Technology |
Wu L.,Kunming Sino Paltinum Metals Catalyst Co. |
Ning P.,Kunming University of Science and Technology |
Yang D.,Kunming University of Science and Technology |
And 4 more authors.
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | Year: 2010
The Ce-Zr-Mn-Al-O solid solutions with precious metal Pd prepared by sol-gel, impregnation and coprecipitation were characterized by BET, TPR and OSC for fresh and aged sample. The results showed that the solid solutions prepared by sol-gel method had good oxygen storage capacity and good performance whether they were fresh or aged sample. The above prepared catalyst was tested in engine bench for the air-fuel ratio and at the continuous temperature. The results showed that the sol-gel method had good characteristics for dealing with THC and NOx, and had strong adaptability and initial conversion under conditions of lean-burn. Therefore, this catalyst was applied to CNG engine emissions control and got good results.