CO为还原剂的脱硝催化剂研究进展

从活性组分、助剂和载体方面综述贵金属催化剂(Ir、Pd、Rh、Ru、Ag)及非贵金属催化剂的研究进展。比较不同催化剂脱硝活性,表明贵金属催化剂及部分非贵金属催化剂均具有一定的脱硝活性。对于贵金属催化剂,中低温活性较高,但热稳定性差,易烧结,且不经济。对于非贵金属催化剂,高温活性较高,稳定性较强。助剂的引入及载体性质对催化剂脱硝活性均有不同程度的影响。

Research progress of denitrification catalysts with CO as reducing agent

Active species,additives and supporters of noble metal(iridium,palladium,rhodium,ruthenium,silver) and other non-noble metal denitrification catalysts are reviewed.It is found that noble metal catalysts and some non-noble metal catalysts all have denitrification activity.Compare with non-noble metal catalysts,noble metal catalysts have high catalytic activity at medium and low temperature.However,noble metal catalysts easily to be sintered have poor thermal stability,and it is expensive.Non-noble metal catalysts have high catalytic activity and stability at high temperature.At the same time,the introduction of additives and the nature of supporters have different effects on the denitration activity of the catalyst.