Applied Catalysis B: Environmental
Applied Catalysis B: Environmental
5 years ago

Highly efficient and stable Ru/K-OMS-2 catalyst for NO oxidation

Highly efficient and stable Ru/K-OMS-2 catalyst for NO oxidation
The influence of addition of a series of non noble and noble metals to a manganese oxide octahedral molecular sieve (OMS) with a cryptomelane structure (K-OMS-2) has been studied for NO oxidation in view of fast selective catalytic reduction applications. Fe, Cu, Zn, Pt, Pd, Ru and Ag were selected as dopant metals with a metal loading around 2wt.%. The catalysts were characterized in detail by ICP-OES, N2 adsorption/desorption at 77K, XRD, H2-TPR and HR-TEM. The highest NO conversion was obtained for a K-OMS-2 catalyst modified with ruthenium, showing a reaction rate up to 5.3μmolg−1 s−1 at 584K. A markedly higher catalyst reducibility upon incorporation of ruthenium can be proposed as an underlying reason for the enhanced catalytic performance.

Publisher URL: www.sciencedirect.com/science

DOI: S0926337317306847

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