• 关键词：甲醇燃料  催化净化  蜂窝钯催化剂

• 基金项目：

• 雷鹏举
• 中国科学院生态环境研究中心,北京

• 周泽兴
• 中国科学院生态环境研究中心,北京

• 摘要：在燃用纯甲醇(M100)的BJ492Q型四冲程发动机的台架试验中,用堇青石蜂窝金属钯催化剂进行了排气净化试验。在发动机的混合比调整和负荷特性试验条件下观察了排气中甲醇、甲醛和一氧化碳的净化效果,观察了发动机的怠速起动和暖机过程中催化剂的净化性能。结果表明,发动机排气经催化净化后,排气中甲醇、甲醛和一氧化碳的浓度分别降低到3-17ppm,1-13ppm和0.01-0.30%;净化率分别达到93-99%,92-98%和80-99%。在发动机怠速起动和暖机过程中催化剂可点燃发挥净化作用。制作了催化箱,在武汉21

• Abstract：During a engine bench test of a four-stroke engine BJ492Q burning M100 fuel, exhaust purification with monolithic palladium-loaded catalyst was evaluated for the exhaust emissions of methanol, formaldehyde, and carbon monoxide. The performance of the catalyst under the conditions of idling and warm-up of the engine was observed as well. The emissions of CH₃OH, HCHO and CO could be reduced to 3-17ppm, 1-13ppm, and 0.01-0.3% with purification efficiencies of 93-99%,92-98% and 80-99%,respectively. The catalyst could be ignited to purify pollutants during idling start and warm-up of the engine. A catalytic purifier was designed and tested on a Wuhan 213 vehicle.

• Key words：methanol fuel  catalytic purification  monolithic palladium catalyst  vehicle exhaust

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