Copper-zinc oxide-aluminum oxide catalyst for carbon dioxide hydrogenation to methanol and method of preparation thereof

Abstract

The present disclosure relates to a Copper-Zinc oxide-Aluminum oxide (Cu—ZnO—Al2O3) catalyst for carbon dioxide hydrogenation to methanol composed of Cu, ZnO, and Al2O3, wherein the molar ratio of Cu to Zn to Al is in the range of (3-4):(3-4):1. The present disclosure also provides a method of preparation of method of preparation of the Cu—ZnO—Al2O3 catalyst for carbon dioxide hydrogenation to methanol comprising: a) dissolving a copper precursor, a zinc precursor and an aluminum precursor in water to obtain a 0.5 M precursor solution; b) processing by adding the precursor solution and IM base solution dropwise with stirring for co-precipitation with under condition to obtain a precipitate; c) aging the precipitate under condition to obtain an aged precipitate; d) filtering the aged precipitate followed by washing until the pH of the filtrate became 7 to obtain a washed precipitate; and e) drying the washed precipitate under condition followed by calcination to obtain a mixed metal oxide catalyst, wherein the molar ratio of Cu:Zn:Al is in the range of (3-4):(3-4):1. The present disclosure also provides a method of carbon dioxide hydrogenation to methanol.

Dependencies are inferred from the claim text.