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Article Dans Une Revue Catalysis Letters Année : 2010

Effect of High Pressure Sulfidation on the Structure of Sulfide Sites of Hydrotreatment Catalysts

Résumé

The effect of high-pressure sulfidation on (Co)Mo/Al(2)O(3) catalysts was studied by means of IR spectroscopy of adsorbed CO and thiophene hydrodesulfurization (HDS). A new IR cell, called CellEx, was designed in order to characterize catalysts sulfided in situ under H(2)S/H(2) flow with pressure varying from 0.1 up to 4.0 MPa. On Mo/Al(2)O(3), high sulfidation pressure changes neither the HDS rate nor the MoS(2) site concentration. Conversely on CoMo catalyst, sulfidation under high pressure leads to a marked increase of the thiophene HDS activity and of the Co-promoted site concentration as well as to some changes in the local structure of CoMoS sites.

Dates et versions

hal-01840511 , version 1 (16-07-2018)

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Laetitia Oliviero, Laurence Mariey, Marc Antoine Lelias, Sebastien Aiello, Jacob Van Gestel, et al.. Effect of High Pressure Sulfidation on the Structure of Sulfide Sites of Hydrotreatment Catalysts. Catalysis Letters, 2010, 135 (1-2), pp.62--67. ⟨10.1007/s10562-010-0265-8⟩. ⟨hal-01840511⟩
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