Abstract
Hydrodesulphurization (HDS) and hydrogenation are carried out by thermal treatment using hydrogen (H2) with the objective of either removing sulphur from the material, or improving the yield of the organic material, or finally forming hydrides by reaction of the elements contained in the mineral matrix with hydrogen. The reaction kinetics are simpler when hydrogen is used compared to pyrolysis, the order of the reaction is equal to unity (A. Attaoui: 1993). The Timahdit (Morocco) oil shale lake deposit is composed, apart from organic matter (kerogen), of a considerable number of metallic, metalloid and non-metallic elements constituting the mineral matrix. We carried out the hydrogen treatment in a dynamic regime (21°C/mn) in thermogravimetry by the Red-Croft balance (A. Attaoui et al: 2022). The choice of the Z1 layer of the Tarfaya marine deposit was made because of the similarity in the quantity of organic matter between this layer and that of the Timahdit deposit (M2).
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