Investigation of the calcination temperature and aging time on the properties of CuO-ZnO-Al2O3 catalysts synthesized by Co-precipitation method in methanol synthesis reaction

Articles in Press

Document Type : Original Article

Authors

1 Research Institute of Petroleum Industry

2 Sharif Univercity

3 Sharif University

10.22034/ijche.2023.392335.1300

Abstract

As one of the promising approaches, the thermocatalytic hydrogenation of carbon dioxide to methanol through a heterogeneous catalyst has attracted much attention in the past decades. In industry, methanol is produced from the reaction of syngas (H2+CO) and carbon dioxide over CuO/ZnO/Al2O3 (CZA) catalysts. Co-precipitation of Cu/Zn/Al nitrates by sodium carbonate is the dominant and standard technique used for the industrial synthesis of methanol catalysts. This three-component catalyst is very sensitive to slight changes in metal components and synthesis parameters. In this study, the effect of calcination temperatures (300, 350, and 400 °C) and aging time (2, 7, and 18 hours) on the structure and textural properties of CuO/ZnO/Al2O3 catalysts have been investigated using the BET, XRD, H2-TPR, and FE-SEM analyses. The results show that the most appropriate catalyst could be synthesized when the calcination temperature and the aging period were set to 350 °C and 7 hours, respectively.

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Iranian Chemical Engineering Journal

Articles in Press, Accepted Manuscript
Available Online from 17 June 2023

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