Solid supported platinum(0) nanoparticles catalyzed chemo-selective reduction of nitroarenes to N-arylhydroxylamines

Shil, Arun K.; Das, Pralay

doi:10.1039/c3gc41179f

Cited by 69 publications

(38 citation statements)

References 48 publications

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“…However, the reduction reaction of an aromatic nitro group proceeds in two steps, until complete reduction to an aromatic amine compound. Two intermediate products, hydroxylamines and hydrazine, might be obtained as the side‐products if the reaction is not truly completed , …”

Section: Introductionmentioning

confidence: 99%

“…Two intermediate products, hydroxylamines and hydrazine, might be obtained as the side-products if the reaction is not truly completed. [14,15] Noble-metal-assisted reductions have been demonstrated involving Pd, Pt, Ag, and Au catalysts, [16] with the use of H 2 gas as the cocatalyst. Nevertheless, the necessity of high H 2 gas pressures reduces recyclability and the high temperatures required present some limitations.…”

Section: Introductionmentioning

confidence: 99%

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Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

et al. 2018

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Two copper‐based Cu3(btc)2 and Cu(Im)2 metal–organic frameworks are synthesized and annealed to form nanoporous Cu/Cu2O@C and Cu@N‐C nanoparticles for utilization as catalysts in the reduction reaction of aromatic nitro compounds to aromatic amines. All synthesized MOF compounds and MOF‐derived nanoparticles are characterized using XRD, Raman spectroscopy, TGA, SEM‐EDX, and XPS methods. Also, the pore‐size distribution and surface area of the MOF‐derived Cu/Cu2O@C and Cu@N‐C nanoparticles are characterized by the BJH and BET methods. After characterization, the catalysts Cu/Cu2O@C and Cu@N‐C are catalytically tested for the reduction reactions of various aromatic nitro compounds chemically by monitoring with a UV/Vis spectrometer. Both catalysts exhibit remarkable results compared with those in the literature. Also, the Cu/Cu2O@C catalyst shows better results than the Cu@N‐C catalyst.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

et al. 2018

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“…The classical methods for the hydrogenation of nitro compounds use various homogeneous transition-metal catalysts, e.g., Pd, Pt, Ru, etc. [8][9][10]. Homogenous catalysts generally dissolve in reaction media, thus providing more readily-accessible active catalytic sites, which results in mild reaction conditions and good selectivity.…”

Section: Open Accessmentioning

confidence: 99%

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Shokouhimehr

2015

Catalysts

185

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This review is focused on the strategies and designs of magnetic nanostructured catalysts showing the enhanced and sustainable catalytic performances for the heterogeneous reduction of nitoaromatics. Magnetic catalysts have the benefits of easy recovery and reuse after the completion of the reactions and green chemical processes. Magnetic separation, among the various procedures for removing catalysts, not only obviates the requirement of catalyst filtration or centrifugation after the completion of reactions, but also provides a practical technique for recycling the magnetized nanostructured catalysts. Consequently, discussions will address the methodologies and exemplars for the reusable magnetic composite catalysts. Because the synthesis of ideal magnetic nanostructured catalysts is of primary importance in the development of high-quality sustainable processes, the designs, preparation methods and recyclability of various recoverable magnetic nanostructured catalysts are emphasized. The representative methods and strategies for the synthesis of durable and reusable magnetic nanostructured catalysts are highlighted. The advantages, disadvantages, recyclability and the efficiency of the introduced heterogeneous systems have been explored in the reduction of nitrobenzene derivatives.

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“…Compared to previously reported Pt and other metal catalyzed nitroreduction using hydrazine as reducing agent (50‐130 h −1 ). Pt TPs@HCSs is the best heterogeneous catalyst for hydrogenation of various nitroaromatic compounds without molecular hydrogen (Table S2) …”

Section: Methodsmentioning

confidence: 99%

“…Pt TPs@HCSs is the best heterogeneous catalyst for hydrogenation of various nitroaromatic compounds without molecular hydrogen (Table S2). [35][36][37][38][39][40][41][42][43][44][45] In order to establish the structure-property relationship of Pt catalysts in nitroreduction, hydrogenation of aromatic nitro compounds was investigated by comparing Pt TPs having high index surface facets with spherical Pt NPs of same Pt content. Superior catalytic reactivity was realized for Pt TPs with high index surface facets with the yield of aniline in hydrogenation reaction of nitrobenzene increasing from 51% for spherical Pt NPs to 99% for Pt TPs under similar reaction conditions (Table S1, entries 5 & 15).…”

mentioning

confidence: 99%

Bifunctional Platinum Tetrapods: High‐Performance Catalyst for Hydrogenation of Aromatic Nitro Compounds and Electrochemical Sensor for Hydrazine.

et al. 2019

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Precise engineering of platinum as nanostructured platinum tetrapods (Pt TPs) is achieved via a facile one‐step hydrothermal synthesis using KCl and KBr as structure directing agents. Heavily influenced by its size and shape, Pt TPs exhibits excellent catalytic activity, selectivity and recyclability in hydrogenation of nitroarenes and acts as an electrochemical sensor for hydrazine. This enhanced activity is attributed to the surface structure of Pt with high‐index facets.

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Solid supported platinum(0) nanoparticles catalyzed chemo-selective reduction of nitroarenes to N-arylhydroxylamines

Cited by 69 publications

References 48 publications

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Bifunctional Platinum Tetrapods: High‐Performance Catalyst for Hydrogenation of Aromatic Nitro Compounds and Electrochemical Sensor for Hydrazine.

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