Facet Engineering in Constructing Lewis Acid-Base Pairs for CO₂ Cycloaddition to High Value-Added Carbonates.

ABSTRACT: Cycloaddition of epoxides with CO₂ to synthesis cyclic carbonates is an atom-economic pathway for CO₂ utilization with promising industry application value, while its efficiency was greatly inhibited for the lack of highly active catalytic sites. Herein, by taking BiOX (X = Cl, Br) with layered structure for example, we proposed a facet engineering strategy to construct Lewis acid-base pairs for CO₂ cycloaddition, where the typical BiOBr with (010) facets expose surface Lewis acid Bi sites and Lewis base Br sites simultaneously. By the combination of in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and theoretical calculations, the oxygen atom of the epoxide is interacted with the Lewis acid Bi site to activate the ternary

SUBMITTER: Shang S 

PROVIDER: S-EPMC9590269 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature