CO₂ hydrogenation over Fe-Co bimetallic catalysts with tunable selectivity through a graphene fencing approach.

ABSTRACT: Tuning CO₂ hydrogenation product distribution to obtain high-selectivity target products is of great significance. However, due to the imprecise regulation of chain propagation and hydrogenation reactions, the oriented synthesis of a single product is challenging. Herein, we report an approach to controlling multiple sites with graphene fence engineering that enables direct conversion of CO₂/H₂ mixtures into different types of hydrocarbons. Fe-Co active sites on the graphene fence surface present 50.1% light olefin selectivity, while the spatial Fe-Co nanoparticles separated by graphene fences achieve liquefied petroleum gas of 43.6%. With the assistance of graphene fences, iron carbides and metallic cobalt can efficiently regulate C-C coupling and olefin s

SUBMITTER: Liang J 

PROVIDER: S-EPMC10787759 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature