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

Vijay K. Velisoju, Jose L. Cerrillo, Rafia Ahmad, Hend Omar Mohamed, Yerrayya Attada, Qingpeng Cheng, Xueli Yao, Lirong Zheng, Osama Shekhah, Selvedin Telalovic, Javier Narciso, Luigi Cavallo, Yu Han, Mohamed Eddaoudi, Enrique V. Ramos-Fernández and Pedro Castaño ()
Additional contact information
Vijay K. Velisoju: King Abdullah University of Science and Technology (KAUST)
Jose L. Cerrillo: King Abdullah University of Science and Technology (KAUST)
Rafia Ahmad: King Abdullah University of Science and Technology (KAUST)
Hend Omar Mohamed: King Abdullah University of Science and Technology (KAUST)
Yerrayya Attada: King Abdullah University of Science and Technology (KAUST)
Qingpeng Cheng: King Abdullah University of Science and Technology (KAUST)
Xueli Yao: King Abdullah University of Science and Technology (KAUST)
Lirong Zheng: Chinese Academy of Sciences
Osama Shekhah: Advanced Membranes and Porous Materials (AMPM) Center
Selvedin Telalovic: King Abdullah University of Science and Technology (KAUST)
Javier Narciso: Universidad de Alicante
Luigi Cavallo: King Abdullah University of Science and Technology (KAUST)
Yu Han: King Abdullah University of Science and Technology (KAUST)
Mohamed Eddaoudi: Advanced Membranes and Porous Materials (AMPM) Center
Enrique V. Ramos-Fernández: Universidad de Alicante
Pedro Castaño: King Abdullah University of Science and Technology (KAUST)

Nature Communications, 2024, vol. 15, issue 1, 1-11

Abstract: 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 spectroscopy, density functional theory calculations, and kinetic results reveal the preferential adsorption sites, the preferential reaction pathways, and the reverse water gas shift reaction suppression over this catalyst. The developed material is robust, easy to synthesize, and active for CO2 utilization.

Date: 2024
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DOI: 10.1038/s41467-024-46388-4

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