US EPA

1038060 

Journal Article 

Catalytic reduction of NO with decomposed methanol on alumina-supported Mn-Ce catalysts 

Spassova, I; Tsontcheva, T; Velichkova, N; Khristova, M; Nihtianova, D 

2012 

Yes 

Journal of Colloid and Interface Science
ISSN: 0021-9797
EISSN: 1095-7103 

374 

1 

267-277 

English 

22365635 

10.1016/j.jcis.2012.01.042 

WOS:000302446900035 

A series of manganese-ceria supported on alumina catalysts with various Mn/Ce ratios are investigated in both methanol decomposition to CO and hydrogen and SCR of NO(x) with CO. The study is aimed at the potential application of both reactions in integrated devices, where NO(x) is reduced with the products of the decomposed methanol. The samples are characterized by nitrogen physisorption, XRD, TEM, XPS, UV-Vis, and TPR. It was established that manganese-ceria supported on alumina catalysts are perspective in both methanol decomposition and NO reduction at temperatures above 723K, which are typical for exhausted gases from the vehicles and some stationary stations. The best catalytic activity and selectivity to the desired products under these conditions was found for the samples with Mn/Mn+Ce ratio of 0.5 and 0.7. This superior catalytic performance is related to the formation of mixed valence Mn(3+)/Ce(4+) and Mn(4+)/Ce(3+) active sites. 

Manganese-ceria supported on alumina catalysts; SCR of NOx with CO; Methanol decomposition