Affiliation:
1. School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
2. Advanced Catalytic Engineering Research Center of the Ministry of Education Hunan University Changsha 410082 China
3. State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 China
Abstract
AbstractIt is highly desired to achieve controllable product selectivity in CO2hydrogenation. Herein, we report light‐induced switching of reaction pathways of CO2hydrogenation towards CH3OH production over actomically dispersed Co decorated Pt@UiO‐66‐NH2. CO, being the main product in the reverse water gas shift (RWGS) pathway under thermocatalysis condition, is switched to CH3OH via the formate pathway with the assistance of light irradiation. Impressively, the space‐time yield of CH3OH in photo‐assisted thermocatalysis (1916.3 μmol gcat−1 h−1) is about 7.8 times higher than that without light at 240 °C and 1.5 MPa. Mechanism investigation indicates that upon light irradiation, excited UiO‐66‐NH2can transfer electrons to Pt nanoparticles and Co sites, which can efficiently catalyze the critical elementary steps (i.e., CO2‐to‐*HCOO conversion), thus suppressing the RWGS pathway to achieve a high CH3OH selectivity.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Guangdong Province
State Key Laboratory of Pulp and Paper Engineering
Subject
General Chemistry,Catalysis
Cited by
19 articles.
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