Abstract
Trimetallic NiMoW/Al2O3 catalyst was prepared using mixed H4SiMo3W9O40 heteropoly acid of Keggin structure and nickel citrate. Bimetallic NiMo/Al2O3 and NiW/Al2O3 catalysts based on H4SiMo12O40 and H4SiW12O40, respectively, were synthesized as reference samples. The use of mixed H4SiMo3W9O40 heteropoly acid as an oxide precursor allows the tungsten sulfidation degree and the degree of promotion of active phase particles to be increased. The hydrodesulfurization activity is enhanced as compared to NiW/Al2O3 catalyst. The synergistic enhancement of the activity of the NiMo3W9/Al2O3 catalyst relative to the bimetallic analogs is probably caused by formation of new mixed promoted active sites for direct desulfurization.
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Original Russian Text © M.S. Nikulshina, A.V. Mozhaev, P.P. Minaev, M. Fournier, C. Lancelot, P. Blanchard, E. Payen, C. Lamonier, P.A. Nikulshin, 2017, published in Zhurnal Prikladnoi Khimii, 2017, Vol. 90, No. 7, pp. 912−920.
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Nikulshina, M.S., Mozhaev, A.V., Minaev, P.P. et al. Trimetallic NiMoW/Al2O3 hydrotreating catalyst based on H4SiMo3W9O40 mixed heteropoly acid. Russ J Appl Chem 90, 1122–1129 (2017). https://doi.org/10.1134/S1070427217070151
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DOI: https://doi.org/10.1134/S1070427217070151