At the frontier between heterogeneous and homogeneous catalysis: hydrogenation of olefins and alkynes with soluble iron nanoparticles

Rangheard, Claudine; Fernández, César de Julián; Phua, Pim-Huat; Hoorn, Johan F.; Lefort, Laurent; Vries, Johannes G. de

doi:10.1039/c0dt00177e

Cited by 94 publications

(68 citation statements)

References 77 publications

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“…Less conventional metals, such as Au, Ag, Cu, Ni, and Fe can be used to catalyze selective hydrogenations. Some of these metals (Au, Ag) do not readily activate hydrogen.…”

Section: Advances In Catalyst Designmentioning

confidence: 99%

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Advances in the Design of Nanostructured Catalysts for Selective Hydrogenation

et al. 2015

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Selective hydrogenations lay at the heart of many industrial processes. The archetypal catalysts for this class of reactions are generally prepared by ‘metal poisoning’ strategies: the active metal is protected and selectively deactivated with various compounds. This approach has been applied for decades, with limited understanding. Low product selectivity and presence of toxic elements in the catalyst pose severe constraints in the utilization of these materials in the future. Thus, to develop more sustainable catalysts, this field has recently gained momentum. This Review analyzes the concepts and frontiers that have been developed in the last decade: from nanostructuring less conventional metals in order to improve their ability to activate H2, to the use of oxides as active phases, from alloying, to the ensemble control in hybrid materials, and site isolation approaches in single‐site heterogeneous catalysts. Particular attention is given to the hydrogenation of alkynes and nitroarenes, two reactions at the core of the chemical industry, importantly applied in the manufacture of polymers, pharmaceuticals, nutraceuticals, and agrochemicals. The strategies here identified can be transposed to other relevant hydrogenations and can guide in the design of more advanced materials.

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“…Less conventional metals, such as Au, Ag, Cu, Ni, and Fe can be used to catalyze selective hydrogenations. Some of these metals (Au, Ag) do not readily activate hydrogen.…”

Section: Advances In Catalyst Designmentioning

confidence: 99%

“…This result was also attributed to the presence of low‐coordinated sites where the adsorption of the reactants is favored. Cu, Ni, and Fe, on the other hand, are quite active in hydrogen splitting, but poorly selective. The catalytic performance can be improved by alloying strategies.…”

Section: Advances In Catalyst Designmentioning

confidence: 99%

Advances in the Design of Nanostructured Catalysts for Selective Hydrogenation

et al. 2015

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“…15 The Fe-NPs are obtained by reducing iron salts with strong reductants in various solvents. When iron chloride was reduced by 3 equivalents of EtMgCl, it formed an active catalyst for hydrogenation of a variety of olefins and alkynes.…”

Section: Hydrogenation Of Alkenesmentioning

confidence: 99%

Nanocatalysts for Hydrogenation Reactions

Narayanan

2013

Nanocatalysis Synthesis and Applications

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“…The field of semi‐heterogeneous catalysis is at the frontier between homogeneous and heterogeneous catalysis. These semi‐heterogeneous catalytic systems not only show high activity and selectivity but also possess simplicity of catalyst separation, recovery and recycling . Magnetic nanoparticles, with their intrinsic high surface‐to‐volume ratio, high stability and reactivity, facile preparation and easy and complete recovery by means of an external magnet, have emerged as robust semi‐heterogeneous catalyst supports.…”

Section: Introductionmentioning

confidence: 99%

Palladium nanoparticles immobilized on amphiphilic and hyperbranched polymer‐functionalized magnetic nanoparticles: An efficient semi‐heterogeneous catalyst for Heck reaction

Rezaei

Shamseddin

Ramazani

et al. 2017

Applied Organom Chemis

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To address the obstacles facing the use of palladium-based homogeneous and heterogeneous catalysts in C─C cross-coupling reactions, a novel semi-heterogeneous support was developed based on hyperbranched poly(ethylene glycol)-blockpoly(citric acid)-functionalized Fe 3 O 4 magnetic nanoparticles (Fe 3 O 4 @PCAb-PEG). Because of the surface modification of the Fe 3 O 4 nanoparticles with amphiphilic and hyperbranched polymers (PCA-b-PEG), these hybrid materials are not only soluble in a wide range of solvents (e.g. water, ethanol and dimethylformamide) but also are able to trap Pd 2+ ions via complex formation of free carboxyl groups of the PCA dendrimer with metal ions. The reduction of trapped palladium ions in the dendritic shell of Fe 3 O 4 @PCA-b-PEG leads to immobilized palladium nanoparticles. The morphology and structural features of the catalyst were characterized using various microscopic and spectroscopic techniques. The catalyst was effectively used in the palladium-catalysed Mizoroki-Heck coupling reaction in water as a green solvent. In addition, the catalyst can be easily recovered from the reaction mixture by applying an external magnetic field and reused for more than ten consecutive cycles without much loss in activity, exhibiting an example of a sustainable and green methodology.

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At the frontier between heterogeneous and homogeneous catalysis: hydrogenation of olefins and alkynes with soluble iron nanoparticles

Cited by 94 publications

References 77 publications

Advances in the Design of Nanostructured Catalysts for Selective Hydrogenation

Advances in the Design of Nanostructured Catalysts for Selective Hydrogenation

Nanocatalysts for Hydrogenation Reactions

Palladium nanoparticles immobilized on amphiphilic and hyperbranched polymer‐functionalized magnetic nanoparticles: An efficient semi‐heterogeneous catalyst for Heck reaction

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