Deep hydrodesulfurization of FCC gasoline and gas oil cuts: Comparison of CO effect, a by-product from biomass

Florian Pelardy (1) , Maxime Philippe (1) , Fréderic Richard (1) , Antoine Daudin (2) , Elodie Devers (2) , Damien Hudebine (2) , Sylvette Brunet (1)

1 IC2MP [Poitiers] - Institut de chimie des milieux et matériaux de Poitiers [UMR 7285]
2 IFPEN - IFP Energies nouvelles

Regarding the composition of the various feedstocks which should be hydrotreated in order to obtain fuels with amount of sulfur less than 10 wt ppm, we have shown that the presence of traces of CO, a by-product from lignocellulosic biomass feedstock conversion, inhibited the transformation of model compounds representative of FCC gasolines and gas oils over CoMo-based sulfide catalysts. Thus, this effect is more significant in the presence of 2-methylthiophene and 2,3-dimethylbut-2-ene representative of a FCC gasoline than in the presence of dibenzothiophene and 4,6-dimethyldibenzothiophene representative of a straight run gas oil, even if the operating conditions are not the same. This effect is attributed to phenomena of competitive adsorption between sulfur compounds, alkenes and CO on the catalyst surface.

Mots clés: Hydrodesulfurization; Straight run gas oils; FCC gasoline; Carbon monoxide; CoMoS-based catalyst

Domaines: Chimie; Catalyse

Florian Pelardy, Maxime Philippe, Fréderic Richard, Antoine Daudin, Elodie Devers, et al.. Deep hydrodesulfurization of FCC gasoline and gas oil cuts: Comparison of CO effect, a by-product from biomass. Comptes Rendus. Chimie, 2016, 19 (10), pp.1266-1275. ⟨10.1016/j.crci.2015.12.006⟩. ⟨hal-01452921⟩