Ordered micro/macro porous K-OMS-2/SiO₂ nanocatalysts: Facile synthesis, low cost and high catalytic activity for diesel soot combustion.

ABSTRACT: A series of novel oxide catalysts, which contain three-dimensionally ordered macroporous (3DOM) and microporous structure, were firstly designed and successfully synthesized by simple method. In the as-prepared catalysts, 3DOM SiO₂ is used as support and microporous K-OMS-2 oxide nanoparticles are supported on the wall of SiO₂. 3DOM K-OMS-2/SiO₂ oxide catalysts were firstly used in soot particle oxidation reaction and they show very high catalytic activities. The high activities of K-OMS-2/SiO₂ oxide catalysts can be assigned to three possible reasons: macroporous effect of 3DOM structure for improving contact between soot and catalyst, microporous effect of K-OMS-2 for adsorption of small gas molecules and interaction of K and Mn for activation

SUBMITTER: Yu X 

PROVIDER: S-EPMC5405416 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature