The influence of phosphorus on the structure and hydrodesulfurization activity of sulfided Co and Co-Mo catalysts supported on carbon and alumina

S.M.A.M. Bouwens, A.M. Kraan, van der, V.H.J. Beer, de, R. Prins

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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Samenvatting

The thiophene HDS activities of phosphorus-containing Co and Co&z,sbnd;Mo sulfide catalysts supported on ¿-Al2O3 and activated carbon were measured at atmospheric pressure. Phosphorus decreased the thiophene HDS activity of the carbon-supported catalysts considerably but did not affect the activity of the alumina-supported catalysts. From XPS it was inferred that phosphorus improves the dispersion of the cobalt phase in the oxidic precursor state of both the carbon- and alumina-supported catalysts. In the sulfided state the interaction between phosphorus and the metal sulfide phase appeared to depend on the support. In the sulfided carbon-supported catalysts, phosphorus formed a Co-phosphate phase, which is responsible for the decrease in HDS activity, while on alumina phosphorus did not influence the structure of the metal sulfide phase.
Originele taal-2Engels
Pagina's (van-tot)559-568
Aantal pagina's10
TijdschriftJournal of Catalysis
Volume128
Nummer van het tijdschrift2
DOI's
StatusGepubliceerd - 1991

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