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The influence of working pressure on the mechanisms of the CO2/H2 reaction on a co-precipitated CuO/ZnO/Al2O3 catalyst have been studied at 230 °C and in the pressure range of 1–75 bar. In the CO2 hydrogenation using CuO/ZnO/Al2O3, the products were found to be CO, methanol and water almost exclusively. Only a trace of methane formation was observed. Methanol and carbon monoxide are competitively...