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- W2018149810 abstract "A series of mechanical mixtures Mo/Al2O3–TiO2/Al2O3has been prepared to study the role of titania in Mo-based HDS catalysts. The catalysts were tested in the thiophene hydrodesulfurization reaction at atmospheric pressure and were characterized by UV–vis diffuse reflectance spectroscopy (DRS), TPR-S (after reaction), and high-resolution electron microscopy (HREM). The results show that the titanium species formed during sulfidation and HDS reaction act as promoter of the Mo phase giving rise to a synergy effect. This synergy effect seems to be related to the electronic properties of the partially reduced and/or sulfided TiO2surface and, in particular, to the presence of Ti3+ions. Finally, estimation of the number of sulfur vacancies created on the used catalysts during TPR-S indicate that only a small proportion of all the edge/corner Mo atoms present in the MoS2crystallites, estimated from HREM observations, are active in HDS and that a low number of sulfur vacancies are required." @default.
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- W2018149810 date "1999-05-01" @default.
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- W2018149810 title "The Role of Titania Support in Mo-Based Hydrodesulfurization Catalysts" @default.
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- W2018149810 doi "https://doi.org/10.1006/jcat.1999.2451" @default.
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