资源型催化剂净化柴油机尾气

本文使用含有稀土金属和过渡金属元素以及只含有过渡金属元素的矿石制备了多种资源型催化剂,并在柴油机台架上进行筛选和活性评价.结果表明,含有稀土金属和过渡金属复合氧化物的ZC-1号催化剂和只含有过渡金属氧化物,但添加助催化剂的ZC-4号催化剂具有较好的温度特性、空速特性、热稳定性和抗积碳性能,其中ZC-1号催化剂的性能最优.对ZC-1号催化剂进行了700h的使用寿命考察,未见其活性降低。

A Research on the Natural Resource Catalysts Used in Diesel Engine Emmision Purification

Several types of natural resource catalysts were pre-ppared by using two kinds of minerals containing both of rare-earth and transition metal element or the transition metal element only. Selection and activity assessment was carried out on a diesel engine platform. Experimental results show that ZC-1 catalyst and ZC-4 catalyst have good characteristics of temperature, space vilocity, thermo-stability and resistance to carbon concentration, and ZC-1 is better. ZC-1 contains oxides of race-earth metal and transition metal, and ZC-4 contains oxides of transition metal and co-catalyst. Primary investigation on the life time of ZC-1 catalyst showed that, for 700 hours, there was no activity decrease observed.