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- W2023552221 abstract "A series of sul-fided Co, Mo and CoMo supported on γ-Al2O3 and SiO2 catalysts has been investigated, after they had been used as catalysts for 8 h at 305°C and 30 bar pressure in contact with a mixture of thiophene, cyclohexene, cyclohexane and hydrogen. The catalytic activity in the hydrodesulphurization (HDS) of thiophene and hydrogenation of cyclohexene was measured. The sulphided and used catalysts were investigated by X-ray diffraction, diffuse reflectance spectroscopy, XPS and ESR. Samples were transferred from the catalytic reactor to the XPS and ESR equipments under controlled argon atmosphere. Several cobalt and molybdenum surface species were identified and their functions in HDS and hydrogenation reactions were evaluated. Cobalt is in its full sulphided state only if molybdenum is present in the catalyst. The high HDS and hydrogenation performance of CoMo supported on Al2O3 is basically due to a strong CoMo-support interaction; this leads to a high dispersion of the non-sulphided species (precursor) and, in consequence, of the active sulphided species." @default.
- W2023552221 created "2016-06-24" @default.
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- W2023552221 date "1982-08-01" @default.
- W2023552221 modified "2023-09-27" @default.
- W2023552221 title "Structure and catalytic activity of CoMo/γ-Al2O3 and CoMo/Sio2 hydrodesulphurization catalysts: an xps and esr characterization of sulfided used catalysts" @default.
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- W2023552221 doi "https://doi.org/10.1016/0166-9834(82)80268-6" @default.
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