Low-temperature SCR Denitration Performance of Cu/KZS and Ce-Cu/KZS Catalysts Based on Acid-modified Slag Powder Support
In this work,slag powder was modified by acid washing and used as support to prepare Cu/KZS and Ce-Cu/KZS catalysts.These catalysts were utilized for low-temperature SCR reaction and their denitration performance was investigated.The experimental results show that the Ce-Cu/KZS catalyst exhibits better low-temperature cata-lytic performance than the Cu/KZS catalyst.More than 93％NOx conversion can be achieved over the Ce-Cu/KZS catalyst in a range of 180～300 ℃.The characterization results reveal that this is mainly due to its higher specific surface area,weaker crystallinity of active species,the stronger low-temperature redox properties and more amount of weak acid.Besides these,the Ce-Cu/KZS catalyst has higher content of surface adsorbed oxygen,which can promote its catalytic activity as well.
NETL
NSTL
万方数据
