Efficient Photothermal CO Hydrogenation into C2+ Hydrocarbons on in situ Generated Fe0 in Fe5C2 Active Sites via Cu-Promoted Hydrogen Dissociation and Spillover
Renjie Zhou , Haoyang Jiang , Yongcheng Xiao , Yueren Liu , Miao Zhong
Chinese Journal of Chemistry ›› 2025, Vol. 43 ›› Issue (7) : 791 -797.
Efficient Photothermal CO Hydrogenation into C2+ Hydrocarbons on in situ Generated Fe0 in Fe5C2 Active Sites via Cu-Promoted Hydrogen Dissociation and Spillover
Photothermal hydrogenation of carbon monoxide (CO) holds the potential to generate valuable C 2+ chemicals using renewable solar energy. However, its activity and selectivity towards C 2–C 3 alkanes are limited compared to conventional thermal catalysis. In this study, we developed a robust catalyst consisting of Cu/Fe 3O 4 nanoparticles on Mo 2C Tx MXene, showing enhanced photothermal C 2–C 3 production. The Cu component plays a crucial role in H 2 dissociation and subsequent H spillover, facilitating the in situ generation of Fe 0 in Fe 5C 2 active sites and thus efficiently promoting photothermal CO hydrogenation. As a result, we achieved a 51.3% C 2+ selectivity and 78.5% CO conversion at a high gas hourly space velocity (GHSV) of 12000 mL·g cat −1·h −1 and 2.5 MPa in a flow reactor at 320 °C. The overall C 2–C 3 yield reached 23.6% with Cu/Fe 3O 4/Mo 2C Tx catalysts, marking a 2.8-fold increase compared to the performance of the bare Fe 3O 4/Mo 2C Tx catalyst.
Photothermal catalysis / Fischer−Tropsch synthesis / Hydrogen spillover / Fe 5C 2 / Product distribution / Hydrocarbons / Catalytic activity / Supported catalysts
2025 SIOC, CAS, Shanghai, & WILEY-VCH GmbH.
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