Synthesis of Bipyridine‐Stabilized Rhodium Nanoparticles in Non‐Aqueous Ionic Liquids: A New Efficient Approach for Arene Hydrogenation with Nanocatalysts

Léger, B.; Denicourt‐Nowicki, Audrey; Roucoux, Alain; Olivier‐Bourbigou, Hélène

doi:10.1002/adsc.200700341

Cited by 67 publications

(44 citation statements)

References 33 publications

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“…However, sometimes ionic liquids alone cannot afford sufficient stabilization, so other appropriate stabilizers may be added into the ionic liquid media. These stabilizers include 1,10-phenanthroline, [127] citrate, [128] oleic acid, [129] dendrimers, [130] bipyridine, [131,132] poly(vinylpyrrolidone), [133][134][135] and ionic-liquid-like polymers. [136][137][138][139][140] 6 ] phase.…”

Section: Synthesis Using Additional Stabilizers or Scavenging Agentsmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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Conventional synthesis of inorganic materials relies heavily on water and organic solvents. Alternatively, the synthesis of inorganic materials using, or in the presence of, ionic liquids represents a burgeoning direction in materials chemistry. Use of ionic liquids in solvent extraction and organic catalysis has been extensively studied, but their use in inorganic synthesis has just begun. Ionic liquids are a family of non-conventional molten salts that can act as templates and precursors to inorganic materials, as well as solvents. They offer many advantages, such as negligible vapor pressures, wide liquidus ranges, good thermal stability, tunable solubility for both organic and inorganic molecules, and much synthetic flexibility. In this Review, the use of ionic liquids in the preparation of several categories of inorganic and hybrid materials (i.e., metal structures, non-metal elements, silicas, organosilicas, metal oxides, metal chalcogenides, metal salts, open-framework structures, ionic liquid-functionalized materials, and supported ionic liquids) is summarized. The status quo of the research field is assessed, and some future perspectives are furnished.

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Section: Synthesis Using Additional Stabilizers or Scavenging Agentsmentioning

confidence: 99%

Preparation of Inorganic Materials Using Ionic Liquids

2009

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“…Leger et al [106] employed 2,2'-bipyridine ligands to stabilise zerovalent rhodium nanoparticles for the hydrogenation of aromatic compounds in ILs using biphasic conditions. They investigated the effects of varying anions and cations of the IL on catalytic activity and found the composition of the IL to have a significant influence on selectivity.…”

Section: Rhodium Nanoparticlesmentioning

confidence: 99%

Hydrogenation in Ionic Liquids

Ghavre¹,

Morrissey²,

Gathergood³

2011

Ionic Liquids: Applications and Perspectives

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“…[21,25] Therefore, there have been some reports about addition of ligands to stabilize metal nanoparticles for biphasic reactions in ionic liquids. [26,27,28] Even if the catalyst/ligand dissolves well in the ionic liquid, there is often a dramatic decrease in its activity after several runs. The main cause of this decrease is that the metal component and/or the ligands might leach successively in the recycling experiments.…”

Section: Introductionmentioning

confidence: 99%

Biphasic Hydrogenation of Olefins by Functionalized Ionic Liquid‐Stabilized Palladium Nanoparticles

Hou

et al. 2008

Adv Synth Catal

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Palladium nanoparticles in the size range of 5-6 nm were prepared conveniently by reducing palladium(II) with atmospheric pressure hydrogen and stabilized by 2,2'-dipyridylamine-functionalized imidazolium cations according to our approach. The efficient catalytic conversion of cyclohexene into cyclohexane by the functionalized ionic liquid-stabilized palladium nanoparticles has been performed under very mild hydrogen pressure (0.1 MPa) and at 35 8C. It was found that the concentration of palladium and the reaction temperature considerably affected the size and degree of aggregation of Pd nanoparticles in ionic liquid, which further changed the performance of the catalyst activity. The synthesized nanocatalysts can be recycled at least five times without any loss of the activity. Finally, the scope of substrates was also investigated. The excellent catalytic activity of the present system can be attributed to good stabilization and high dispersion of palladium nanoparticles.

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Synthesis of Bipyridine‐Stabilized Rhodium Nanoparticles in Non‐Aqueous Ionic Liquids: A New Efficient Approach for Arene Hydrogenation with Nanocatalysts

Abstract: International audienc

Cited by 67 publications

References 33 publications

Preparation of Inorganic Materials Using Ionic Liquids

Preparation of Inorganic Materials Using Ionic Liquids

Hydrogenation in Ionic Liquids

Biphasic Hydrogenation of Olefins by Functionalized Ionic Liquid‐Stabilized Palladium Nanoparticles

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