Controlled acidity-mediated short-chain olefin synthesis over a Mn–Zn–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 olefin selectivity, 3.9% methane, and 65% CO formation with 18% CO₂ conversion. This research demonstrates an effective bifunctional catalyst design for direct CO₂ hydrogenation into valuable hydrocarbons.