DECOMPOSITION OF VOLATILE GASES AND WATER FROM TARFAYAOIL SHALE (MOROCCO) UNDER HYDROGEN.BEHAVIOR IN HETEROGENEOUS KINETICS

Volatile gases and oil shale water are the first constituents to decompose during hydropyrolysis (H2) in the dynamic regime. In this study we investigated the kinetics of this reaction for these compounds. In addition to TG (thermogravimetry), the Red-Croft (microthermobalance) also provides information on DTG (thermogravimetric derivative).By adopting the resolution of the Coast-Redfern approximation, we have given an approach to the activation energies for volatile gases (Ea₁) and for water (Ea₂). The bituminous layers chosen are the Z2 layer, which formed in the Cretaceous in a cold climate, and the Z3 layer (Cretaceous, Turonin), which formed in the warm climate(A.Attaoui et al: 2022).At a heating rate of 21°C/min, we noted for the Z2 layer:Ea (volatile gases)=27.31 kj/mole and Ea (water)=34 kj/mole and for Z3 we noted:Ea (volatile gases) = 27.34 kj/mol and Ea (water) = 32.9 kj/mol.