Influence of the hydrogen sulfide partial pressure on the hydrodeoxygenation reactions over sulfided CoMo/Carbon catalysts

Ferrari, M.;Bosmans, S.;Maggi, R.;Delmon, Bernard;Grange, Paul
(1999) 2nd International Symposium on Hydrotreatment and Hydrocracking of Oil Fractions/7th European Workshop on Hydrotreatment — Location: ANTWERPEN(Belgium) (14.November.1999)

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  • Ferrari, M.
    Author
  • Bosmans, S.
    Author
  • Maggi, R.
    Author
  • Delmon, BernardUCLouvain
    Author
  • Grange, PaulUCLouvain
    Author
Abstract
This work concerns the influence of the hydrogen sulfide partial pressure on the activity in hydrodeoxygenation and associated reactions of a CoMo/Carbon catalyst for the transformation of guaiacol, ethyldecanoate and 4-methylacetophenone. This has been studied over a wide range of hydrogen sulfide partial pressures, from 10 to 150 kPa, under a total pressure of 7 MPa, at reaction temperatures of 270 and 200 degrees C. An inhibition effect is observed in the hydrogenolysis pathway in guaiacol conversion and in ethyldecanoate dehydroxylation. The conversion of 4-methylacetophenone is also inhibited by hydrogen sulfide. The results have been interpreted on the basis of the existence of different active sites responsible for hydrogenolysis, hydrogenation and acid catalysed reactions. The increase in hydrogen sulfide partial pressure would decrease the average degree of reduction of the active sites and inhibit the hydrogenolysis pathway, more than the hydrogenation one. The results are compared to those observed with alumina supported catalysts in hydrodeoxygenation and hydrodesulfurisation.
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Ferrari, M., Bosmans, S., Maggi, R., Delmon, B., & Grange, P. (1999). Influence of the hydrogen sulfide partial pressure on the hydrodeoxygenation reactions over sulfided CoMo/Carbon catalysts. Studies in Surface Science and Catalysis, 127, 85-95. https://doi.org/10.1016/S0167-2991(99)80396-6 (Original work published 1999)