Mechanochemical synthesis of highly dispersed Cu on CeO2 for the reverse water-gas shift reaction
Year: 2025
Type: article
Abstract: Copper-based catalysts are highly promising for carbon dioxide (CO 2 ) reduction to carbon monoxide (CO) via the reverse water-gas shift (RWGS) reaction, owing to their efficiency, copper abundance, sustainability and cost-effectiveness. However, enhancing CO 2 conversion and CO selectivity requires achieving high copper dispersion through a scalable and economical synthesis method. In this study, Cu was combined with CeO 2 rods via a mechanochemical ball-milling approach to optimize performance in the RWGS reaction. Comprehensive characterization and kinetic analysis revealed how metal content influences catalyst architecture and activity. Additionally, in situ diffuse reflectance infrared Fourier transform spectroscopy was used to investigate the nature of copper species at different dispersion levels and elucidate the reaction pathway. Notably, the Cu/CeO 2 catalyst with a high Cu loading (~5 wt%) and well-dispersed active sites achieved an activity (R Cu (CO 2 )) of 4.8◊10 −5 mol CO2 m Cu −2 s −1 with over 99% CO selectivity at 450 °C. These findings provide a robust strategy for developing high-performance Cu-based catalysts for the RWGS reaction.
Source: Chemical Engineering Journal
Language: English
Subfield: Catalysis
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,830
Funders: Centres de Recerca de Catalunya, Institut Català de Nanociència i Nanotecnologia, European Commission, Generalitat de Catalunya, Federación Española de Enfermedades Raras, Institució Catalana de Recerca i Estudis Avançats, China Scholarship Council, Ministerio de Ciencia e Innovación, Universitat Autònoma de Barcelona, Natural Science Foundation of Sichuan Province, European Regional Development Fund, Agencia Estatal de Investigación, NextGenerationEU
Awards: G1059279500, G1066896890, G1119546765, G1204740081, G120905174, G1266308206, G1272927172, G1622782223, G1739362868, G183288693, G2262748287, G278875382, G2798886022, G2852833104, G2921251677, G2988934680, G3005324705, G3251711671, G3320050967, G3480869486, G348919436, G354764522, G357246561, G3681454997, G3847472936, G4042783231, G4085104896, G425668148, G438407517, G4442677895, G4463870990, G451917667, G4526231891, G464105488, G4904980878, G5002828137, G5148776692, G5297624039, G531036588, G5417250019, G542927270, G5675269863, G5771735252, G5892978690, G5922099756, G5967599077, G5993317658, G6301466106, G6605876378, G6656126374, G6752770709, G6762955466, G677611228, G7008114842, G7016589888, G7084143925, G7420629364
OpenAlex ID: W4411373345