期刊
CHINESE JOURNAL OF CATALYSIS
卷 42, 期 11, 页码 2027-2037出版社
ELSEVIER
DOI: 10.1016/S1872-2067(21)63828-7
关键词
Ni-Co alloy nanoparticles; Carbon nanotubes; Hydrodeoxygenation; Biomass derivatives; H2O solvent
资金
- National Natural Science Foundation of China [51902311, 51871209, 61804154]
A facile method to prepare Ni-Co alloy nanoparticles as HDO catalyst on N-CNTs tip was reported for the first time, showing excellent performance in biomass transformation and selectivity improvement. The Ni-Co alloy catalyst exhibited outstanding HDO performance with 100% conversion efficiency and over 90% selectivity for various aromatic aldehyde derivatives in water.
Catalytic hydrodeoxygenation (HDO) is one of the most promising strategies to transform oxygen-rich biomass derivatives into high value-added chemicals and fuels, but highly challenging due to the lack of highly efficient nonprecious metal catalysts. Herein, we report for the first time of a facile synthetic approach to controllably fabricate well-defined Ni-Co alloy NPs confined on the tip of N-CNTs as HDO catalyst. The resultant Ni-Co alloy catalyst possesses outstanding HDO performance towards biomass-derived vanillin into 2-methoxy-4-methylphenol in water with 100% conversion efficiency and selectivity under mild reaction conditions, surpassing the reported high performance nonprecious HDO catalysts. Impressively, our experimental results also unveil that the Ni-Co alloy catalyst can be generically applied to catalyze HDO of vanillin derivatives and other aromatic aldehydes in water with 100% conversion efficiency and over 90% selectivity. Importantly, our DFT calculations and experimental results confirm that the achieved outstanding HDO catalytic performance is due to the greatly promoted selective adsorption and activation of C=O, and desorption of the activated hydrogen species by the synergism of the alloyed Ni-Co NPs. The findings of this work affords a new strategy to design and develop efficient transition metal-based catalysts for HDO reactions in water. (C) 2021, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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