新型汽车废气催化剂(日本)日本原子能研究所的近日研制出一种新型催化材料,它不仅能提高催化能力,还能大大减少汽车废气转换器中贵金属的用量。一般汽车废气转换器的核心部件是上面有大量微孔的陶瓷,表面涂以粉状催化剂。含有钯、铂、铑等贵金属成分的催化剂,能够减少尾气中一氧化碳、氮氧物等有毒物质的含量。但是由于转换器靠近发动机,高温会使催化剂颗 New Automobile Exhaust Catalyst (Japan) Japan’s Atomic Energy Research Institute recently developed a new catalytic material, which not only can improve the catalytic capacity, but also can greatly reduce the amount of precious metal used in automobile exhaust gas converter. The core component of a typical automotive exhaust converter is a large number of microporous ceramic above the surface coated with powdered catalyst. Catalysts containing noble metals such as palladium, platinum and rhodium reduce the content of toxic substances such as carbon monoxide, nitrogen oxides and the like in the exhaust gas. However, due to the proximity of the converter to the engine, high temperatures can cause catalyst particles