Controlled acidity-mediated short-chain olefins synthesis over MnZn-Zr/Zn-SAPO-34 catalyst via CO2 hydrogenation

Abstract

Transforming CO2 into short-chain olefins via a methanol-mediated route is challenging due to CO byproduct formation. This study introduces a Mn-Zn-Zr/Zn-SAPO-34 catalyst, achieving 81% short-chain olefins selectivity, 3.9% methane, and 65% CO formation with 18% CO2 conversion. The research demonstrates an effective bifunctional catalyst design for direct CO2 hydrogenation into valuable hydrocarbons.