Palladium Nanoparticles Supported on Polyaniline Nanofibers as a Semi‐Heterogeneous Catalyst in Water

Gallon, Benjamin J.; Kojima, Robert W.; Kaner, Richard B.; Diaconescu, Paula L.

doi:10.1002/ange.200701389

Cited by 69 publications

(55 citation statements)

References 48 publications

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“…Kantam et al reported that PANI-supported Pd nanoparticles have high catalytic activity for Suzuki coupling reactions in water and were reused without loss of activity (Kantam et al, 2007). PANI nanofiber-supported Pd nanoparticles with low metal loading (0.05 mol%) are active catalysts for the Suzuki coupling reaction of aryl chlorides with arylboronic acids in water (Gallon et al, 2007). Recently, we have found PPy-Pd nanocomposite-coated polystyrene particles have high catalytic activity for Suzuki coupling reaction in water .…”

Section: Suzuki Coupling Reactions Using the Conducting Polymer-metalmentioning

confidence: 99%

Conducting Polymer-Metal Nanocomposite Coating on Fibers

Fujii¹,

Kodama²,

Matsuzawa³

et al. 2011

Advances in Nanocomposite Technology

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Section: Suzuki Coupling Reactions Using the Conducting Polymer-metalmentioning

confidence: 99%

Conducting Polymer-Metal Nanocomposite Coating on Fibers

Fujii¹,

Kodama²,

Matsuzawa³

et al. 2011

Advances in Nanocomposite Technology

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“…In order to take advantage of these characteristics, PANI-nanofibers were employed as the carriers of palladium nanoparticles. The products 3a (88 %) and 3b (92 %) were formed as a result of this catalyst using [6].…”

Section: Reactions With the Formation Of C-c Bondsmentioning

confidence: 99%

“…Independently of the previous group the interaction of p-chlorophenol derivatives and phenylboronic acid has been studied under the leadership of P. L. Diaconescu [6]. The palladium nanoparticles were used as the catalyst, the interest to it increases because of the benefits offered by these "half-geterogenous catalysts".…”

Section: Reactions With the Formation Of C-c Bondsmentioning

confidence: 99%

“…Для того чтобы воспользоваться этими характеристиками, были задей-ствованы ПАНИ-нановолокна в каче-стве носителя наночастиц палладия. В результате использования такого катализатора образуются продукты 3a (88 %) и 3b (92 %) [6].…”

Section: образование биариловunclassified

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The production of novolac oligomers

Galushchinsky¹,

Обыденнов²

2016

Chim.Tech.Acta

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The paper presents the improvement of production technology of novolac phenol-formaldehyde oligo-mers by introducing the new scheme of capture of exhaust gases due to waste production, which leads to a reduction of costs and increase economic efficiency. The calculation of the material balance of the pro-duction of novolac phenol-formaldehyde oligomer at 300 kg/h of technical product is performed, the technological calculation of the basic equipment and selection of auxiliary equipment is produced. The apparatus scheme of production is made and the description of the process is represented. The draft of the main reactor is made.

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“…Interest in Pd NPs in catalysis is immense [8,9,[36][37][38], with the SMXR attracting particular interest (see examples in References [21][22][23][24][39][40][41][42][43][44]). Contrary to the situation for the SMXR, reports on the OHR of arylboronic acids catalyzed by Pd NPs are few and far between.…”

Section: The Suzuki-miyaura Cross Coupling Reaction and The Oxidativementioning

confidence: 99%

Halide-Enhanced Catalytic Activity of Palladium Nanoparticles Comes at the Expense of Catalyst Recovery

et al. 2017

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Abstract:In this communication, we present studies of the oxidative homocoupling of arylboronic acids catalyzed by immobilised palladium nanoparticles in aqueous solution. This reaction is of significant interest because it shares a key transmetallation step with the well-known Suzuki-Miyaura cross-coupling reaction. Additives can have significant effects on catalysis, both in terms of reaction mechanism and recovery of catalytic species, and our aim was to study the effect of added halides on catalytic efficiency and catalyst recovery. Using kinetic studies, we have shown that added halides (added as NaCl and NaBr) can increase the catalytic activity of the palladium nanoparticles more than 10-fold, allowing reactions to be completed in less than half a day at 30 • C. However, this increased activity comes at the expense of catalyst recovery. The results are in agreement with a reaction mechanism in which, under conditions involving high concentrations of chloride or bromide, palladium leaching plays an important role. Considering the evidence for analogous reactions occurring on the surface of palladium nanoparticles under different reaction conditions, we conclude that additives can exert a significant effect on the mechanism of reactions catalyzed by nanoparticles, including switching from a surface reaction to a solution reaction. The possibility of this switch in mechanism may also be the cause for the disagreement on this topic in the literature.

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Palladium Nanoparticles Supported on Polyaniline Nanofibers as a Semi‐Heterogeneous Catalyst in Water

Cited by 69 publications

References 48 publications

Conducting Polymer-Metal Nanocomposite Coating on Fibers

Conducting Polymer-Metal Nanocomposite Coating on Fibers

The production of novolac oligomers

Halide-Enhanced Catalytic Activity of Palladium Nanoparticles Comes at the Expense of Catalyst Recovery

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