Boosting Hydrogenation of CO 2 Using Cationic Cu Atomically Dispersed on 2D γ‐Al 2 O 3 Nanosheets
Year: 2025
Type: article
Abstract: The continuous development of novel catalytic approaches is crucial for advancing efficient CO 2 hydrogenation processes. Drawing inspiration from single‐atom catalysis and 2D materials, we designed a new 2D single‐atom catalyst with excellent thermal stability by thermally treating Cu‐adsorbed γ‐AlOOH nanosheets, which yielded a Cu/γ‐Al 2 O 3 catalyst with high activity in the hydrogenation of CO 2 ‐yielding methanol (CH 3 OH), dimethyl ether (DME), and CO as products. The active Cu sites are monodispersed and highly stable due to their cationic oxidation state and their substitution for pentacoordinated aluminum (Al P ) sites on particle surfaces. This study demonstrates an efficient approach for achieving a high CO 2 hydrogenation rate (30.45 mol mol −1 h −1 ) using a catalyst system that lacks metallic Cu centers, traditionally considered essential for H₂ dissociation, and employs what was previously thought to be an inert metal oxide (γ‐Al 2 O 3 ) for CO and CH 3 OH production. Ongoing mechanistic studies aim to elucidate the synergy between cationic Cu single atoms and γ‐Al 2 O 3 , a Lewis acid support, in facilitating hydrogen (H 2 ) activation and methanol formation.
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,510
Awards: G102163711, G1038817908, G107546177, G1118031844, G1202769797, G124136831, G125460123, G1286251239, G1313983767, G138090931, G1630445618, G1664757510, G1736462507, G1819750246, G1851334662, G1899721271, G2027088588, G2287611682, G2333961959, G2506945562, G2510423872, G262962599, G2820049545, G2857925935, G2988778103, G2992156276, G2994398150, G299733460, G2998698001, G3075337988, G3466678926, G3496119864, G391136020, G426311843, G498139845, G5321382714, G5373841109, G5387317844, G5726405315, G6086730356, G6261433946, G6848031779, G6918803902, G6924774934, G7583137537, G821644656, G969889393, G993149817
OpenAlex ID: W4409544408