Abstract
The effect of elevated temperatures on the textural and structural characteristics of the carbon material Sibunit in an oxygen-containing atmosphere was studied depending on the preliminary treatment of Sibunit with HNO3 and the presence and the amount of an active component (Pt). According to the results of thermogravimetry, the preliminary treatment of Sibunit with HNO3 led to an increase in the temperature range of carbon oxidation, while the introduction of Pt led to a decrease in this temperature range. It was found that an exposure of Pt/Sibunit samples for 4 h in a nitrogen–air mixture at a temperature of 400°C led to an increase in the total volume and average pore diameter with a slight change in the specific surface area, and the average particle size of platinum increased from 2 to 5 nm.
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ACKNOWLEDGMENTS
The physicochemical studies were carried out with the use of the equipment of the Center for Collective Use “National Center for Catalyst Research” at the Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences. The research was supported by a Tomsk Polytechnic University competitiveness development program. This work was carried out within the framework of a state contract of the Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences (state registration no. AAAA-A17-117021450096-8).
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Translated by V. Makhlyarchuk
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Borisov, V.A., Iost, K.N., Temerev, V.L. et al. Influence of Oxidative Treatment and Platinum Content on the Stability of the Pt/Sibunit System in an Oxidizing Atmosphere at Elevated Temperatures. Solid Fuel Chem. 54, 385–391 (2020). https://doi.org/10.3103/S0361521920060026
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DOI: https://doi.org/10.3103/S0361521920060026