Catalytic oxidation of nitric oxide over modified carbide slag: Experimental and theoretical studies

Abstract

In this work, experimental and theoretical methods were used to investigate the catalytic effect of K 2 O on NO oxidation. Experimental results indicated that K 2 O was the main active component. It enhanced the removal of NO and decreased the reaction temperature. Theoretical results indicated that the K 2 O (001)-O surface was more suitable for the adsorption of NO and O 2 . Also, NO and O 2 on the Ca(OH) 2 surface may migrate to the K 2 O surface for reaction.NO 2 was formed via the interaction of (NO) 2 and O atoms. The formation of O N N O was the key step for NO oxidation, which was more conducive to the subsequent oxidation of NO.