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- W2001814671 abstract "The effect of the support on the catalytic activity and properties of molybdenum sulfide catalysts was investigated in order to obtain the fundamental information necessary for designing better hydrotreating catalysts. The catalytic activity for each catalyst was evaluated using model test reactions under high hydrogen pressure. The order of supports for hydrogenation (HYD) of 1-methylnaphthalene was A12O3 > TiO2 > MgO > SiO2, while that for hydrocracking (HYC) of diphenylmethane and hydrodesulfurization (HDS) of dibenzothiophene was TiO2 > SiO2 > A12O3 > MgO. Characterization of catalysts clarified that the catalytic activities depend on the structure and properties of the metal oxide which is the precursor of the active sulfide species. Formation of highly dispersed two-dimensional polymolybdate structures, which were observed on the A12O3 and the TiO2 supports, were the most favorable for high HYD activity. In contrast, the data indicate that the enhancement of HYC activity requires an electronegative form of the molybdenum species on which Brønsted acid sites can be formed under the reaction condition. HDS of DBT can be catalyzed on both kinds of active sites, although the product distribution is different." @default.
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- W2001814671 date "1988-04-01" @default.
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- W2001814671 title "Support effect on the catalytic activity and properties of sulfided molybdenum catalysts" @default.
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- W2001814671 doi "https://doi.org/10.1016/0021-9517(88)90319-3" @default.
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