Abstract
A catalyst based on TiO2 and nanodiamond with a 10 wt % palladium content of the catalyst was synthesized. The effect of the nanodiamond content on the catalytic properties in a reaction of CO oxidation at room temperature and low concentrations of CO (<100 mg/m3) was studied. It was established that, at a nanodiamond content of the catalyst from 7 to 9 wt % and a palladium content of 10 wt %, the rate of CO oxidation reached a maximum, and it was higher by a factor of 2.5 than the rate of CO oxidation on a catalyst based on pure TiO2, which included palladium clusters. With the use of transmission electron microscopy, XRD X-ray diffractometry, and X-ray photoelectron spectroscopy, it was found that the clusters of palladium covered with palladium oxide with an average cluster size of 4 nm were formed on the surface of the TiO2 carrier. It was assumed that the catalyst synthesized is promising for applications in catalytic and photocatalytic air-cleaning systems.
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Original Russian Text © N.N. Vershinin, O.N. Efimov, E.N. Kabachkov, E.N. Kurkin, 2018, published in Kinetika i Kataliz, 2018, Vol. 59, No. 2, pp. 201–205.
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Vershinin, N.N., Efimov, O.N., Kabachkov, E.N. et al. Low-Temperature Oxidation of Carbon Monoxide: The Synthesis and Properties of a Catalyst Based on Titanium Dioxide, Nanodiamond, and Palladium for CO Oxidation. Kinet Catal 59, 174–178 (2018). https://doi.org/10.1134/S0023158418020155
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DOI: https://doi.org/10.1134/S0023158418020155