Ambient-pressure hydrogenation of CO₂ into long-chain olefins.

ABSTRACT: The conversion of CO₂ by renewable power-generated hydrogen is a promising approach to a sustainable production of long-chain olefins (C₄₊⁼) which are currently produced from petroleum resources. The decentralized small-scale electrolysis for hydrogen generation requires the operation of CO₂ hydrogenation in ambient-pressure units to match the manufacturing scales and flexible on-demand production. Herein, we report a Cu-Fe catalyst which is operated under ambient pressure with comparable C₄₊⁼ selectivity (66.9%) to that of the state-of-the-art catalysts (66.8%) optimized under high pressure (35 bar). The catalyst is composed of copper, iron oxides, and iron carbides. Iron oxides enable reverse-water-gas-shift to produce CO.

SUBMITTER: Li Z 

PROVIDER: S-EPMC9064975 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature