Solvent-free selective hydrogenation of nitroaromatics to azoxy compounds over Co single atoms decorated on Nb 2 O 5 nanomeshes.

Autor: Li Z; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China. zhijun.li@queensu.ca., Lu X; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China., Guo C; Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, PR China., Ji S; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China., Liu H; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China., Guo C; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China., Lu X; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China., Wang C; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, PR China., Yan W; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, PR China., Liu B; National Center for International Research on Catalytic Technology, School of Chemistry and Material Sciences, Heilongjiang University, Harbin, PR China., Wu W; National Center for International Research on Catalytic Technology, School of Chemistry and Material Sciences, Heilongjiang University, Harbin, PR China., Horton JH; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China.; Department of Chemistry, Queen's University, Kingston, Canada., Xin S; National Key Laboratory of Continental Shale Oil, College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, PR China., Wang Y; Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, PR China. yu.wang@njnu.edu.cn.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Apr 12; Vol. 15 (1), pp. 3195. Date of Electronic Publication: 2024 Apr 12.
DOI: 10.1038/s41467-024-47402-5
Abstrakt: The solvent-free selective hydrogenation of nitroaromatics to azoxy compounds is highly important, yet challenging. Herein, we report an efficient strategy to construct individually dispersed Co atoms decorated on niobium pentaoxide nanomeshes with unique geometric and electronic properties. The use of this supported Co single atom catalysts in the selective hydrogenation of nitrobenzene to azoxybenzene results in high catalytic activity and selectivity, with 99% selectivity and 99% conversion within 0.5 h. Remarkably, it delivers an exceptionally high turnover frequency of 40377 h -1 , which is amongst similar state-of-the-art catalysts. In addition, it demonstrates remarkable recyclability, reaction scalability, and wide substrate scope. Density functional theory calculations reveal that the catalytic activity and selectivity are significantly promoted by the unique electronic properties and strong electronic metal-support interaction in Co 1 /Nb 2 O 5 . The absence of precious metals, toxic solvents, and reagents makes this catalyst more appealing for synthesizing azoxy compounds from nitroaromatics. Our findings suggest the great potential of this strategy to access single atom catalysts with boosted activity and selectivity, thus offering blueprints for the design of nanomaterials for organocatalysis.
(© 2024. The Author(s).)
Databáze: MEDLINE
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