Magnetically Recoverable Palladium(0) Nanocomposite Catalyst for Hydrogenation Reactions in Water

Pélisson, Carl-Hugo; Denicourt‐Nowicki, Audrey; Mériadec, Cristelle; Grenèche, Jean‐Marc; Roucoux, Alain

doi:10.1002/cctc.201402761

Cited by 39 publications

(23 citation statements)

References 57 publications

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“…Therefore, catalytic activity decay seems to result from the loss of nanocatalysts during the steps of washing and magnetic separation for the consecutive reuse of the nanocatalysts. An easy and straightforward method has been introduced by Pelission et al for loading palladium NPs onto the magnetic surface of magnetic iron oxide NPs without using organic modifiers [45]. The potential and effectiveness of the Pd@γ-Fe2O3 nanocatalysts were investigated in the hydrogenation of nitroarene derivatives under hydrogen pressure (100 kPa) in water.…”

Section: Methodsmentioning

confidence: 99%

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Shokouhimehr

2015

Catalysts

183

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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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Section: Methodsmentioning

confidence: 99%

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Shokouhimehr

2015

Catalysts

183

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“…Dehalogenation side reactions are often encountered in the ultrafine Pd NPs‐catalyzed hydrogenation of aryl halides, because the edge sites (including steps and corners) are predominant when the particle size is 2–5 nm, on which the reaction barriers of dehalogenation are much smaller than those on terrace sites . Recently, there have been many researchers devoted to the Pd‐catalyzed dehalogenation reaction, which is considered to be a promising non‐destructive method for the detoxification of hazardous aromatic chlorides . The hydrogenation of nitrobenzene derivatives in the presence of other reducible groups was also tested.…”

Section: Resultsmentioning

confidence: 99%

Poly(amic acid) salt‐mediated palladium and platinum nanoparticles as highly active and recyclable catalysts for hydrogenation of nitroarenes in water under ambient conditions

Wang

Jin

et al. 2018

Applied Organom Chemis

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Development of highly active and recyclable catalysts for selective hydrogenation of nitroarenes to amines in water at room temperature is always a challenge in chemical industry. This study reports a facile in situ method for synthesis of ultrafine palladium and platinum nanoparticles (NPs) stabilized by poly (amic acid) salt (PAAS) and their potential as catalysts for hydrogenation of nitroarenes with sodium borohydride or molecular hydrogen as reductant in water at room temperature. In the reduction of 4‐nitrophenol to 4‐aminophenol by sodium borohydride, the activity parameters of PdNPs–PAAS and PtNPs–PAAS catalyst is 6.66 × 103 and 5.58 × 103 s−1 M−1 respectively. In the hydrogenation of diverse nitroarenes under atmospheric hydrogen pressure, PdNPs–PAAS shows high activity but poor selectivity toward desired amines in some cases, while PtNPs–PAAS shows both high activity and high selectivity for selective hydrogenation of nitroarenes to corresponding anilines. The high efficiency of nanocatalyst is due to the quasi‐homogeneous dispersion of metal NPs and synergistic effects between metal NPs and PAAS. In addition, nanocatalyst can be easily recovered with pH‐sensibility of PAAS and reused at least six times without significant loss of catalytic activities.

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“…The Ag/Fe 2 O 3 nanocatalysts also successfully reduced other functionalized NAs such as 4-nitrobenzoic acid, which is a challenging proposition because of the presence of carboxylic acid groups (Table 3). Similarly, Pelisson et al 90 prepared maghemite-supported Pd NPs nanocatalysts for the reduction of nitro aromatics to amino aromatics with aqueous NaBH 4 .…”

Section: Supported Magnetic Nanocatalystsmentioning

confidence: 99%

Recent Advances in the Nanocatalyst-Assisted NaBH₄ Reduction of Nitroaromatics in Water

et al. 2019

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In view of the increasing applications of nanocatalysis in chemical transformations, this article illustrates recent advances on the use of nanocatalysts for an important reduction reaction, the hydrogenation of nitroaromatics to significant aminoaromatics with aqueous NaBH 4 solution; the utility of mono- and multimetal nanocatalysts with special emphasis on heterogeneous nanocatalysts is included. A progressive trend on the applicability of nanocatalysts is also incorporated with large-scale application and their sustainable recyclization and reuse utilizing supported and magnetic nanocatalysts; representative methods for the synthesis of such reusable nanocatalysts are featured.

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Magnetically Recoverable Palladium(0) Nanocomposite Catalyst for Hydrogenation Reactions in Water

Abstract: International audienc

Cited by 39 publications

References 57 publications

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Poly(amic acid) salt‐mediated palladium and platinum nanoparticles as highly active and recyclable catalysts for hydrogenation of nitroarenes in water under ambient conditions

Recent Advances in the Nanocatalyst-Assisted NaBH₄ Reduction of Nitroaromatics in Water

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Magnetically Recoverable Palladium(0) Nanocomposite Catalyst for Hydrogenation Reactions in Water

Abstract: International audienc

Cited by 39 publications

References 57 publications

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Magnetically Separable and Sustainable Nanostructured Catalysts for Heterogeneous Reduction of Nitroaromatics

Poly(amic acid) salt‐mediated palladium and platinum nanoparticles as highly active and recyclable catalysts for hydrogenation of nitroarenes in water under ambient conditions

Recent Advances in the Nanocatalyst-Assisted NaBH4 Reduction of Nitroaromatics in Water

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Recent Advances in the Nanocatalyst-Assisted NaBH₄ Reduction of Nitroaromatics in Water