Journal
ACS CATALYSIS
Volume 11, Issue 13, Pages 8197-8210Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.1c01561
Keywords
non-noble metal catalysts; CoW bimetallic alloys; heterogeneous catalysis; selective hydrogenation; quinolines
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Funding
- Spanish MINECO (Severo Ochoa excellence program) [SEV-2016-0683]
- European Research Council [ERC-AdG-2014-671093]
- Generalitat Valenciana [SEJI/2020/018]
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Non-noble bimetallic CoW nanoparticles partially embedded in a carbon matrix were prepared by a hydrothermal carbon-coating method followed by pyrolysis. The bimetallic NPs showed excellent catalytic performance for the selective hydrogenation of quinolines, outperforming monometallic Co@C due to the CoW alloyed structures.
Non-noble bimetallic CoW nanoparticles (NPs) partially embedded in a carbon matrix (cow@c) have been prepared by a facile hydrothermal carbon-coating methodology followed by pyrolysis under an inert atmosphere. The bimetallic NPs, constituted by a multishell core-shell structure with a metallic Co core, a W-enriched shell involving Co7W6 alloyed structures, and small WO3 patches partially covering the surface of these NPs, have been established as excellent catalysts for the selective hydrogenation of quinolines to their corresponding 1,2,3,4-tetrahydroquinolines under mild conditions of pressure and temperature. It has been found that this bimetallic catalyst displays superior catalytic performance toward the formation of the target products than the monometallic Co@C, which can be attributed to the presence of the CoW alloyed structures.
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