Medium-coupled catalysts meeting Euro III emission standards for condensed natural gas vehicles

作者：Yuan Shuhua^*; Wang Yongjun; Shi Zhonghua; Zhao Ming; Gong Maochu; Liu Zhongchang; Chen Qizhang; Chen Yaoqiang

来源：Chinese Journal of Catalysis, 2007, 28(5): 401-403.

DOI：10.1016/S1872-2067(07)60036-9

• rear earth oxygen storage material
• lanthanum-stabilized alumina
• exhaust gas purification
• condensed natural gas
• medium-coupled catalyst
• vehicle test

The Ce0.45Zr0.45Y0.05La0.05O2 Oxygen storage material and La-stabilized alumina ( La-Al2O3) were prepared. After aging at 1000 degrees C for 5 h, Ce0.45Zr0.45Y0.05La0.05O2 maintains superior textual and oxygen storage properties, and La-Al2O3 shows superior textual properties. Medium-coupled Pt-Rh monolithic catalysts for condensed natural gas (CNG) vehicles were prepared by impregnating Ce0.45Zr0.45Y0.05La0.05O2 and La-Al2O3 with H2PtCl6 and RhCl3 solutions and then washcoated on the cordierite honeycomb. The medium-coupled catalysts showed high activity at low temperature and thermal stability. The results from the emission test of JET-TA-MT CNG vehicle indicated that the prepared catalysts were capable of fulfilling Euro III requirements.

• 出版日期2007-5
• 单位四川大学; 吉林大学