From Gas to Liquid Phase Sulfidation: An IR Spectroscopy Study

Erwan Le Guludec , Laetitia Oliviero (1) , Jean-Pierre Pierre Gilson , Françoise Mauge (1) , Michael Rebeilleau , Valentina De Grandi , Sander Van Donk

1 LCS - Laboratoire catalyse et spectrochimie

A side by side characterization of gas and liquid phase activation of a CoMo/Al2O3 hydrodesulfurization (HDS) catalyst is reported using thiophene HDS as a test reaction and CO adsorption monitored by infrared spectroscopy. The liquid phase sulfidation (high pressure, dimethyldisulfide) leads to the formation of CoMoS sites with higher intrinsic activity compared to the gas phase (H2S/H-2).

Mots clés: Hydrotreatment; Carbon monoxide adsorption; Effect of carbon; Liquid phase sulfidation; Sulfide catalyst structure; Thiophene HDS

Domaines: Chimie

Erwan Le Guludec, Laetitia Oliviero, Jean-Pierre Pierre Gilson, Françoise Mauge, Michael Rebeilleau, et al.. From Gas to Liquid Phase Sulfidation: An IR Spectroscopy Study. Catalysis Letters, 2012, 142 (6), pp.736--743. ⟨hal-01840345⟩