Breaking the activity-selectivity trade-off of CO₂ hydrogenation to light olefins.

ABSTRACT: Catalytic hydrogenation of CO₂ to value-added fuels and chemicals is of great importance to carbon neutrality but suffers from an activity-selectivity trade-off, leading to limited catalytic performance. Herein, the ZnFeAlO₄ + SAPO-34 composite catalyst was designed, which can simultaneously achieve a CO₂ conversion of 42%, a CO selectivity of 50%, and a C₂-C₄⁼ selectivity of 83%, resulting in a C₂-C₄⁼ yield of almost 18%. This superior catalytic performance was found to be from the presence of unconventional electron-deficient tetrahedral Fe sites and electron-enriched octahedral Zn sites in the ZnFeAlO₄ spinel, which were active for the CO₂ deoxygenation to CO via the

SUBMITTER: Wang X 

PROVIDER: S-EPMC11406295 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature