The present thermodynamic analysis is aimed to explore autothermal conditions at equilibrium for a high H-2-Syngas production under the combined ethanol steam reforming (SRE), chemical looping partial oxidation (CLPOX) and CO2 solid absorption reaction system. SRE studied conditions were H2O/C2H5OH = 3-6 M ratio, CLPOX employed NiO or CuO as oxygen carriers from MeO/C2H5OH = 0.05-1.5 M ratio, while 2 kmols of CaO were used for CO2 capture in a T range of 100-900 degrees C at 1 atm. NiO most favorable adiabatic conditions (T >= 500 degrees C and C <= 0.1 kmols) were: H2O/C2H5OH = 3 and NiO/C2H5OH = 0.05-0.5. While, for CuO was at H2O/C2H5OH = 4, CuO/C2H5OH = 0.5 and T-adiab = 529 degrees C. These favorable reaction conditions are the product of the combination of the exothermic carbonation reaction and its influence over the thermodynamic equilibrium over the POX and SRE endothermic reactions. Copyright (c) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.