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

Adjimi, S., García-Vargas, J.M., Díaz, J.A., Retailleau, L., Gil, S., Pera-Titus, M., Guo, Y. and Giroir-Fendler, A. 2017. Highly efficient and stable Ru/K-OMS-2 catalyst for NO oxidation. Applied Catalysis B: Environmental 219 , pp. 459-466. 10.1016/j.apcatb.2017.07.044

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Abstract

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 2 wt.%. The catalysts were characterized in detail by ICP-OES, N2 adsorption/desorption at 77 K, 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 5.3 μmol g−1 s−1 at 584 K. A markedly higher catalyst reducibility upon incorporation of ruthenium can be proposed as an underlying reason for the enhanced catalytic performance.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Publisher: Elsevier
ISSN: 0926-3373
Date of Acceptance: 15 July 2017
Last Modified: 12 Jan 2021 15:00
URI: https://orca.cardiff.ac.uk/id/eprint/137458

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