Work

CO2 hydrogenation to methanol on the incapsulated Cu-Zn catalyst: Effect of the MCM-41 and SBA-15 supports and the method of preparation on catalytic activity

Year: 2025

Type: article

Abstract: The catalytic conversion of carbon dioxide into methanol is of great practical and scientific importance in the concept of reducing CO2 emissions and will partially solve the problem of human dependence on non-renewable resources, and the development of selective and active catalysts for CO2 hydrogenation is a key point due to the strong thermodynamic limitations and chemical stability of CO2. In this work, the influence of the nature of the mesoporous supports, as well as the method of introducing the active component on the catalytic properties of Cu-Zn catalysts in the hydrogenation of CO2 to methanol was investigated. A series of bimetallic Cu-Zn catalysts deposited on mesoporous supports MCM-41 and SBA-15 was prepared by two methods of encapsulation and incipient wetness impregnation. The obtained catalysts were characterized by the methods of N2 adsorption, XRD, SEM-EDX, TG-DTA. The highest conversion and methanol space-time yield were observed for the encapsulated Cu-Zn catalyst on the MCM-41 support. In the temperature range of 170-300 °C, the selectivity to methanol for this catalyst was 86-98 %. The study demonstrates the prospects of using bimetallic Cu-Zn catalysts encapsulated in MCM-41 for direct CO2 hydrogenation to produce «green» methanol.

Source: Green Synthesis and Catalysis

DOI: 10.1016/j.gresc.2025.04.004