Abstract
Comprehensive SummaryPhotothermal hydrogenation of carbon monoxide (CO) holds the potential to generate valuable C2+ chemicals using renewable solar energy. However, its activity and selectivity towards C2—C3 alkanes are limited compared to conventional thermal catalysis. In this study, we developed a robust catalyst consisting of Cu/Fe3O4 nanoparticles on Mo2CTx MXene, showing enhanced photothermal C2—C3 production. The Cu component plays a crucial role in H2 dissociation and subsequent H spillover, facilitating the in situ generation of Fe0 in Fe5C2 active sites and thus efficiently promoting photothermal CO hydrogenation. As a result, we achieved a 51.3% C2+ selectivity and 78.5% CO conversion at a high gas hourly space velocity (GHSV) of 12000 mL·gcat−1·h−1 and 2.5 MPa in a flow reactor at 320 °C. The overall C2—C3 yield reached 23.6% with Cu/Fe3O4/Mo2CTx catalysts, marking a 2.8‐fold increase compared to the performance of the bare Fe3O4/Mo2CTx catalyst.
Published Version
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