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- Title
Highly efficient and anti-poisoning single-atom cobalt catalyst for selective hydrogenation of nitroarenes.
- Authors
Lin, Yuemin; Nie, Renfeng; Li, Yuting; Wu, Xun; Yu, Jiaqi; Xie, Shaohua; Shen, Yajing; Mao, Shanjun; Chen, Yuzhuo; Lu, Dan; Bao, Zongbi; Yang, Qiwei; Ren, Qilong; Yang, Yiwen; Liu, Fudong; Qi, Long; Huang, Wenyu; Zhang, Zhiguo
- Abstract
Developing non-precious metal catalysts to selectively reduce functionalized nitroarenes with high efficiency is urgently desirable for the production of value-added amines. Herein, we report a novel, efficient, anti-poisoning single-atom cobalt catalyst (Co-NAC) for the highly selective hydrogenation of the nitro to amino group for nitroarenes baring various functional groups, including vinyl, cyano, and halogen. Using a combination of structure characterization techniques, we have confirmed that the cobalt species are predominantly present in the form of four-coordinated Co single sites anchored on nitrogen-assembly carbon (NAC) as the ordered mesoporous support. Co-NAC catalysts enable the full conversion and > 99% selectivity with molecular H2 as a green reductant under mild conditions (80 °C, 2 MPa H2). As for the selective hydrogenation of 3-nitrostyrene, Co-NAC catalyst affords high catalytic productivity (19.7 h−1), which is superior to the cobalt nanoparticles (NPs) catalysts and most of the recently reported Co-based catalysts. This is attributed to the highly accessible atomically-dispersed Co active sites, the high surface area with ordered-mesoporous morphology and the prominent high content of nitrogen dopants. Notably, Co-NAC catalyst displays resistance towards sulfur-containing poisons (20 equivalents) and strong non-oxidizing acid (8 M), showing great potential for continuous application in the chemical industry.
- Publication
Nano Research, 2022, Vol 15, Issue 12, p10006
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-022-4294-6