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Chemoselective Hydrogenation of Nitroaromatics at the Nanoscale Iron(III)–OH–Platinum Interface
Author(s) -
Wang Yu,
Qin Ruixuan,
Wang Yongke,
Ren Juan,
Zhou Wenting,
Li Laiyang,
Ming Jiang,
Zhang Wuyong,
Fu Gang,
Zheng Nanfeng
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202003651
Subject(s) - aniline , catalysis , x ray photoelectron spectroscopy , hydrodeoxygenation , chemistry , platinum , selectivity , nitro , redox , inorganic chemistry , photochemistry , organic chemistry , chemical engineering , alkyl , engineering
Catalytic hydrogenation of nitroaromatics is an environment‐benign strategy to produce industrially important aniline intermediates. Herein, we report that Fe(OH) x deposition on Pt nanocrystals to give Fe(OH) x /Pt, enables the selective hydrogenation of nitro groups into amino groups without hydrogenating other functional groups on the aromatic ring. The unique catalytic behavior is identified to be associated with the Fe III ‐OH‐Pt interfaces. While H 2 activation occurs on exposed Pt atoms to ensure the high activity, the high selectivity towards the production of substituted aniline originates from the Fe III ‐OH‐Pt interfaces. In situ IR, X‐ray photoelectron spectroscopy (XPS), and isotope effect studies reveal that the Fe 3+ /Fe 2+ redox couple facilitates the hydrodeoxygenation of the ‐NO 2 group during hydrogenation catalysis. Benefitting from Fe III ‐OH‐Pt interfaces, the Fe(OH) x /Pt catalysts exhibit high catalytic performance towards a broad range of substituted nitroarenes.