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- W2323955841 abstract "Reaction mechanism, hydrogen transfer and consumption of asphaltene hydrogenation were examined at 723K and 10.1MPa of nitrogen or hyd-rogen with or without solvent and catalyst. The asphaltene was prepared by hyd-rogenating Akabira coal at 723K and 10.1MPa of hydrogen. The oil products, i.e. the hexane solubles, were fractionated by gas chromatography into four oil compo-nents, O1 to O4, having different boiling-point temperature ranges and aromatic ring numbers.On the basis of the time profiles of the asphaltene conversion and the yields of oil fractions and gas, it was shown that the rate for formation of oil components from the heavier ones was negligibly small so that they could be assumed to be formed indepen-dently each other from asphaltene. Asphaltene was easily hydrogenated to oil compo-nents by tetralin. In the presence of Co-Mo-Al2O3, only the rate for formation of the heaviest oil component, O4, was accelerated by hydrogen transfer from the gas phase. The hydrogen consumption per unit mass of asphaltene was found to increase in prop-ortion to the asphaltene conversion, implying that reactivity of asphaltene was almost invariable during initial stage of hydrogenation." @default.
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- W2323955841 date "1990-01-01" @default.
- W2323955841 modified "2023-09-24" @default.
- W2323955841 title "Hydrogenation characteristics of Akabira coal asphaltene." @default.
- W2323955841 doi "https://doi.org/10.3775/jie.69.12_1139" @default.
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