ACTIVATION ENERGIES BY COAST-REDFERN APPROXIMATIONS OF THE MINERAL MATTER HYDROPYROLYSIS FOR THE TARFAYA OIL SHALE (MOROCCO). MODELING TO OBTAIN THESE ENERGIES FOR THE DIFFERENT LAYERS IN NON-ISOTHERMAL

The hydropyrolysis of inorganic (or mineral) material is also important because most inorganic compounds in the presence of hydrogen form hydrides which are also fuels. In this work, we were interested in heterogeneous kinetics under a dynamic (non-isothermal) regime, with selected heating rates of 21°C/min, 15°C/min and 9°C/min. The oil shale layers studied, Z0, Z1, Z2, Z3 and Z4, come from the Tarfaya deposit (Morocco). The microthermobalance is the Red-Croft (A.Attaoui et al: 2022). In the dynamic regime, several application models are considered, and we adopted the Coast-Redfern approximation to arrive at the activation energies for this reaction. This model enabled us to find these activation energies for the Z2 and Z3 layers for the heating rate of 21°C/min. A development of approach was adapted using also the values of the DTG found in coupling with the TG of the Red-Croft to determine the activation energies of all the layers of the deposit and at all the heating rates.