Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Modifications in the Composition of CuO/ZnO/Al2O3 Catalyst for the Synthesis of Methanol by CO2 Hydrogenation

Version 1 : Received: 9 June 2021 / Approved: 11 June 2021 / Online: 11 June 2021 (09:06:15 CEST)

How to cite: Trifan, B.; Lasobras, J.; Soler, J.; Herguido, J.; Menéndez, M. Modifications in the Composition of CuO/ZnO/Al2O3 Catalyst for the Synthesis of Methanol by CO2 Hydrogenation. Preprints 2021, 2021060308 (doi: 10.20944/preprints202106.0308.v1). Trifan, B.; Lasobras, J.; Soler, J.; Herguido, J.; Menéndez, M. Modifications in the Composition of CuO/ZnO/Al2O3 Catalyst for the Synthesis of Methanol by CO2 Hydrogenation. Preprints 2021, 2021060308 (doi: 10.20944/preprints202106.0308.v1).

Abstract

Renewable methanol, obtained from CO2 and hydrogen provided from renewable energy, has been proposed as a way to close the CO2 loop. In industry, methanol synthesis using the catalyst CuO/ZnO/Al2O3 occurs at a high pressure. We intend to make certain modification on the traditional catalyst in order to work at lower pressure, maintaining high selectivity. Therefore, three heterogeneous catalysts have been synthesized by co-precipitation in order to improve the activity and the selectivity to methanol under mild conditions of temperature and pressure. Certain modifications on the traditional catalyst Cu/Zn/Al2O3 were employed such as the modification of the synthesis time and the addition of Pd as a dopant agent. The most efficient catalyst among those tested was a palladium-doped catalyst, 5% Pd/Cu/Zn/Al2O3. This had a selectivity of 64% at 210C and 5 bar.

Subject Areas

CO2 hydrogenation; Methanol synthesis; Cu/ZnO catalyst; Pd catalyst; Energy storage

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