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Preparation and characterization of candidate catalysts for deep hydrodesulfurization of gasoils. Sulfidation and acidity characteristics of supported Ni/W and Ni/Mo catalysts by Tamás I. Korányi; Mária Dobrovolszky; Tamás Koltai; Károly Matusek; Zoltán Paál; Pál Tétényi is a Engineering article available to read on EtoBox.
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35 ## Ž . The uptake of S-labelled H S, the thiophene hydrodesulfurization HDS activity in pulse 2 Ž . and flow system and the acidity measured by infrared IR band intensities of adsorbed pyridine Ž . were studied after various treatments over NiWramorphous silica-alumina ASA , NiWrAl O 2 3 Ž . and NiMorAl O catalysts. The Fourier Transformation Infrared FTIR measurements indicated 2 3 that the NiWrASA catalyst contained some Bronsted and much more Lewis acid sites, whereas less Bronsted acid sites were observed on the alumina supported samples. The concentration of Bronsted and Lewis acid sites decreased after sulfidation. The amount of total sulfur uptake of NiMorAl O catalyst was about twofold of the one of NiW samples. The sulfidation level of the 2 3 catalysts was much lower in the pulse system than in the flow one and also the thiophene conversion was much lower on NiW catalysts in the former setup than in the latter system. A band was detected in the radiochromatogram of NiWrASA catalyst during desorption of H S in the 2 pulse system which was attributed to weakly adsorbed H S on the Bronsted acidic sites. This
Who reads Preparation and characterization of candidate catalysts for deep hydrodesulfurization of gasoils. Sulfidation and acidity characteristics of supported Ni/W and Ni/Mo catalysts?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Tamás I. Korányi; Mária Dobrovolszky; Tamás Koltai; Károly Matusek; Zoltán Paál; Pál Tétényi
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0378-3820)
- Published
- 1999
- Language
- EN
- Field
- Engineering (Physical Sciences)