Correlation between synthesis pH, structure and Cu/MgO/Al2O3 heterogeneous catalyst activity and selectivity in CO2 hydrogenation to methanol

Cu/MgO/Al2O3 catalysts were synthesized by a co-precipitation preparation method, varying pH, while their catalytic performance was evaluated in a continuous-flow packed-bed reactor to relate the catalytic material activity, selectivity and stability with its surface structure. The major reaction products were methanol and water with CO as a sole process by-product. Alkaline synthesis conditions (pH = 8) positively affected CO2 conversion and...