Pd immobilized on amine-functionalized magnetite nanoparticles: a novel and highly active catalyst for hydrogenation and Heck reactions

Zhang, Fengwei; Jin, Jun; Zhong, Xing; Li, Shuwen; Niu, Jianrui; Li, Rong; Ma, Jiantai

doi:10.1039/c0gc00854k

Cited by 201 publications

(74 citation statements)

References 53 publications

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“…78 These nanoparticles were synthesized by a one-pot template-free method combined with a metal adsorptionreduction protocol. The nanoparticles were characterized using a variety of techniques such as TEM, XRD, XPS, FTIR, and vibrating sample manetometer (VSM).…”

Section: Hydrogenation Of Aromatic Compoundsmentioning

confidence: 99%

Nanocatalysts for Hydrogenation Reactions

Narayanan

2013

Nanocatalysis Synthesis and Applications

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Section: Hydrogenation Of Aromatic Compoundsmentioning

confidence: 99%

Nanocatalysts for Hydrogenation Reactions

Narayanan

2013

Nanocatalysis Synthesis and Applications

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“…The Pd catalysis usually allows selective reactions with high turnover numbers and turnover frequencies [34]. In addition, the amine groups on the chitosan-based catalyst are known to enhance the activity of Pd [35]. However, direct use of Pd as a catalyst is limited in homogeneous reaction systems due to the difficulties in separating and recycling the catalyst from the system [33].…”

Section: Metal Catalystsmentioning

confidence: 99%

“…As magnetic material supported catalysts have revealed its insoluble and paramagnetic nature to enable easy and efficient separation from reaction mixture with an external magnetic field [5,30,35,40], a novel magnetic chitosan-based catalyst was proposed by Zhou et al [5]. They used chitosan magnetite nanoparticles (chitosan-Fe3O4) to form Pd-based magnetic catalysts for fast hydrogenation of various aromatic nitro and acetalization of acrylonitrile under mild conditions.…”

Section: Metal Catalystsmentioning

confidence: 99%

Chitosan as a Natural Polymer for Heterogeneous Catalysts Support: A Short Review on Its Applications

2015

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Chitosan, a bio-based polymer which has similar characteristics to those of cellulose, exhibits cationic behavior in acidic solutions and strong affinity for metals ions. Thus, it has received increased attention for the preparation of heterogeneous catalysts. Recent studies demonstrated that chitosan-based catalysts had high sorption capacities, chelating activities, stability and versatility, which could be potentially applied as green reactants in various scientific and engineering applications. This study intends to review the recent development of chitosan-based catalysts, particularly in the aspects of the main mechanisms for preparing the materials and their applications in environmental green chemistry. Studies on the preparation of catalyst nanoparticles/nanospheres supported on chitosan were also reviewed.

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“…Since the polystyrene-bonded amino groups may act as capping agents for the Pd nanoparticles, a significantly reduced Pd leaching is expected [50][51][52][53].…”

mentioning

confidence: 99%

“…procedure, we investigated the use of diethylaminomethyl-polystyrene (PS-TEA) as the heterogeneous base, which can be removed by simple filtration from the reaction mixture, and therefore, the isolation of the final product can be obtained simply by distillation of the azeotropic reaction medium. Since the polystyrene-bonded amino groups may act as capping agents for the Pd nanoparticles, a significantly reduced Pd leaching is expected [50][51][52][53].…”

mentioning

confidence: 99%

Immobilized Palladium Nanoparticles on Zirconium Carboxy-Aminophosphonates Nanosheets as an Efficient Recoverable Heterogeneous Catalyst for Suzuki–Miyaura and Heck Coupling

et al. 2017

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Zirconium phosphate glycine diphosphonate nanosheets (ZPGly) have been used as support for the preparation of solid palladium nanoparticles, namely Pd@ZPGly. Thanks to the presence of carboxy-aminophosponate groups on the layer surface, ZPGly-based materials were able to stabilize a high amount of palladium (up to 22 wt %) also minimizing the amount of metal leached in the final products of representative important cross-coupling processes selected for proving the catalysts' efficiency. The catalytic systems have been fully characterized and used in low amounts (0.1 mol %) in the Suzuki-Miyaura and Heck cross-couplings. Moreover, the protocols were optimized for the use of recoverable azeotropic mixtures (aq. EtOH 96% or aq. CH 3 CN 84%, respectively) and in the flow procedure allowing one to isolate the final pure products, without any purification step, with very low residual palladium content and with a very low waste production.

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Pd immobilized on amine-functionalized magnetite nanoparticles: a novel and highly active catalyst for hydrogenation and Heck reactions

Cited by 201 publications

References 53 publications

Nanocatalysts for Hydrogenation Reactions

Nanocatalysts for Hydrogenation Reactions

Chitosan as a Natural Polymer for Heterogeneous Catalysts Support: A Short Review on Its Applications

Immobilized Palladium Nanoparticles on Zirconium Carboxy-Aminophosphonates Nanosheets as an Efficient Recoverable Heterogeneous Catalyst for Suzuki–Miyaura and Heck Coupling

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