High Selectivity CO2 Hydrogenation to Liquid Fuel Over NaFeZnMn Catalyst

• Published in: Catalysis letters 2025, Vol.155 (1), p.2, Article 2
• Main Authors: Zhang, Tong, Li, Zhongrui, Qiu, Juan, Bai, Jing, Cao, Baowei, Xu, Shihang, Wang, Hanying, Xu, Yunhua, Guo, Lei
• Format: Article
• Language: English
• Subjects: Adsorption; Carbon dioxide; Catalysis; Catalysts; Catalytic converters; Chemical reactions; Chemical synthesis; Chemistry; Chemistry and Materials Science; Hydrocarbons; Hydrogenation; Industrial Chemistry/Chemical Engineering; Liquid fuels; Molecular chains; Organometallic Chemistry; Physical Chemistry; Synergistic effect
• ISSN: 1011-372X; 1572-879X
• DOI: 10.1007/s10562-024-04869-7

Direct synthesis of liquid fuel (C 5+ hydrocarbons) through CO 2 hydrogenation has attracted considerable interest. However, it is plagued by high selectivity of C 1 by-products (CO and CH 4 ) and low reaction activity. Herein, we report that Na-FeZn catalysts promoted by a combination of metal additives and investigate their synergistic effect in the catalytic CO 2 hydrogenation reaction. The CO 2 conversion is high to 40.6% with the 68.3% C 5+ selectivity. The characteristic results reveal the specific surface area has a great influence on the catalytic performance. Furthermore, the synergistic effect of Mn in the catalyst enhances CO 2 adsorption while weakening H 2 adsorption, thus remarkably promoting the carbon chain growth and limiting the production of C 1 products. This study offers a promising approach to modulating the metal electronic environment and improving carbon efficiency for CO 2 hydrogenation reactions. Graphical Abstract We present a simple NaFeZnMn-S nanocatalyst that can effectively catalyze CO 2 hydrogenation to C 5+ hydrocarbons. The selectivity towards C 5+ hydrocarbons is as high as 68.3% at 40.6% CO 2 conversion.