Copper nanoparticles encapsulated in zeolitic imidazolate framework-8 as a stable and selective CO₂ hydrogenation catalyst.

ABSTRACT: Metal-organic frameworks have drawn attention as potential catalysts owing to their unique tunable surface chemistry and accessibility. However, their application in thermal catalysis has been limited because of their instability under harsh temperatures and pressures, such as the hydrogenation of CO₂ to methanol. Herein, we use a controlled two-step method to synthesize finely dispersed Cu on a zeolitic imidazolate framework-8 (ZIF-8). This catalyst suffers a series of transformations during the CO₂ hydrogenation to methanol, leading to ~14 nm Cu nanoparticles encapsulated on the Zn-based MOF that are highly active (2-fold higher methanol productivity than the commercial Cu-Zn-Al catalyst), very selective (>90%), and remarkably stable for over 150 h. In situ spectros

SUBMITTER: Velisoju VK 

PROVIDER: S-EPMC10918174 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature