Zinc Based High Temperature Methanol Synthesis Catalysts Enabling Direct Synthesis of Olefins and Aromatics from CO<sub>2</sub>

Abstract

A route for converting CO2 into valuable products, such as plastic monomers, is the combination of methanol synthesis and methanol dehydration to hydrocarbons. Methanol synthesis is equilibrium limited and a strategy to overcome this is to combine a methanol synthesis catalyst with a zeolite catalyst within one reactor [1,2]. In the temperature range of 300 to 420 °C, necessary for the zeolite to be active, the traditional Cu/ZnO/Al2O3 methanol synthesis catalyst cannot be used due to severe sintering of the metallic copper deactivates the catalyst. Furthermore, the hydrogen spill-over effect and likely surface reactions on the metallic copper result in the hydrogenation of the olefins formed in the zeolite [3].<br/

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