Lignin Residue-Derived Carbon-Supported Nanoscale Iron Catalyst for the Selective Hydrogenation of Nitroarenes and Aromatic Aldehydes

Sarki, Naina and Kumar, Raju and Singh, Baint and Ray, Anjan and Naik, Ganesh and Natte, Kishore and et al, . (2022) Lignin Residue-Derived Carbon-Supported Nanoscale Iron Catalyst for the Selective Hydrogenation of Nitroarenes and Aromatic Aldehydes. ACS Omega, 7 (23). pp. 19804-19815. ISSN 2470-1343

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Heterogeneous iron-based catalysts governing selectivity for the reduction of nitroarenes and aldehydes have received tremendous attention in the arena of catalysis, but relatively less success has been achieved. Herein, we report a green strategy for the facile synthesis of a lignin residue-derived carbon-supported magnetic iron (γ-Fe2O3/LRC-700) nanocatalyst. This active nanocatalyst exhibits excellent activity and selectivity for the hydrogenation of nitroarenes to anilines, including pharmaceuticals (e.g., flutamide and nimesulide). Challenging and reducible functionalities such as halogens (e.g., chloro, iodo, and fluoro) and ketone, ester, and amide groups were tolerated. Moreover, biomass-derived aldehyde (e.g., furfural) and other aromatic aldehydes were also effective for the hydrogenation process, often useful in biomedical sciences and other important areas. Before and after the reaction, the γ-Fe2O3/LRC-700 nanocatalyst was thoroughly characterized by X-ray diffraction (XRD), N2adsorption-desorption, X-ray photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), Raman spectroscopy, and thermogravimetric analysis (TGA). Additionally, the γ-Fe2O3/LRC-700 nanocatalyst is stable and easily separated using an external magnet and recycled up to five cycles with no substantial drop in the activity. Eventually, sustainable and green credentials for the hydrogenation reactions of 4-nitrobenzamide to 4-aminobenzamide and benzaldehyde to benzyl alcohol were assessed with the help of the CHEM21 green metrics toolkit. © 2022 American Chemical Society. All rights reserved.

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IITH Creators:
IITH CreatorsORCiD
Natte, Kishore
Item Type: Article
Additional Information: K.N. acknowledges DST-SERB, New Delhi (SRG/20l9/002004), for financial support. N.S. and R.K. are thankful to Council of Scientific and Industrial Research (CSIR), New Delhi, for awarding fellowship. B.S. is thankful to DST-Inspire for awarding a research fellowship. The authors are thankful to the analytical staff of CSIR-IIP, Dehradun, for their excellent support.
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: . LibTrainee 2021
Date Deposited: 14 Oct 2022 06:31
Last Modified: 14 Oct 2022 06:31
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