Abstract
Pt/Sup catalysts with SiO2, MCM-48, and Al2O3 supports (Sup) were prepared. The catalysts were studied by methods of low-temperature nitrogen adsorption, temperature-programmed reduction, and high-resolution transmission electron microscopy. The kinetic characteristics of hydrogenation of biphenyl and diphenylmethane taken separately and of their eutectic mixture were studied on a flow-through catalytic installation at temperatures of 150–170°С, pressure of 4 MPa, liquid hourly space velocity (LHSV) of 5–15 h–1, and hydrogen/feed ratio of 500 m3n.c./m3. A biphenyl–diphenylmethane eutectic mixture (weight ratio 35 : 65) was used as a model mixture. According to the data obtained, the catalyst activity decreases in the order Pt/MCM-48 > Pt/Al2O3 > Pt/SiO2. The use of mesostructured silicate MCM-48 as a support allows the dispersity of the active phase to be increased compared to the traditional SiO2 and Al2O3, which enhances the catalyst activity in hydrogenation of biphenyl and diphenylmethane.
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The study was financially supported by the Russian Federation Government, resolution no. 220, grant 14.Z50.31.0038, and within the framework of the government assignment of the Ministry of Science and Higher Education of the Russian Federation (theme no. АААА-А12-1111100072-9).
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Translated from Zhurnal Prikladnoi Khimii, No. 1, pp. 128–136, December, 2022 https://doi.org/10.31857/S0044461822010157
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Kondrateva, V.Y., Martynenko, E.A., Pimerzin, A.A. et al. Effect of Support on Catalytic Properties of Platinum-Containing Catalysts in Hydrogenation of a Biphenyl–Diphenylmethane Eutectic Mixture. Russ J Appl Chem 95, 126–134 (2022). https://doi.org/10.1134/S1070427222010165
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DOI: https://doi.org/10.1134/S1070427222010165