Palladium nanoparticles supported on reduced graphene oxide as an efficient catalyst for the reduction of benzyl alcohol compounds

Mirza‐Aghayan, Maryam; Tavana, Mahdieh Molaee; Boukherroub, Rabah

doi:10.1016/j.catcom.2015.05.023

Cited by 30 publications

(14 citation statements)

References 34 publications

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“…In continuation of our efforts on the use of Et 3 SiH/PdCl 2 system and graphite oxide, we have studied the efficiency of palladium oxide nanoparticles supported on graphene oxide (PdO NPs/GO) for the reduction of benzyl alcohols to the corresponding methylene compounds under mild conditions . Herein, we took benefit of the intrinsic reactivity of PdO NPs/GO catalyst for the reduction of various aromatic carbonyl compounds.…”

Section: Resultsmentioning

confidence: 99%

Palladium oxide nanoparticles supported on graphene oxide: A convenient heterogeneous catalyst for reduction of various carbonyl compounds using triethylsilane

Mirza‐Aghayan

Kalantari

Boukherroub

2019

Applied Organom Chemis

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Palladium oxide nanoparticles supported on graphene oxide ‐ triethylsilane was found to be an effective reductive system for a broad range of reduction processes, including the reduction of various carbonyl compounds such as aromatic aldehydes to their corresponding alcohols or methyl arene compounds, aromatic ketones to their respective alcohols or saturated compounds, aromatic acyl chlorides to their reduced compounds. The desired products were obtained in good to excellent yields under mild conditions. The heterogeneous environmentally friendly catalyst can be easily separated from the reaction mixture through a simple filtration, facilitating purification of the prepared compounds.

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Section: Resultsmentioning

confidence: 99%

Palladium oxide nanoparticles supported on graphene oxide: A convenient heterogeneous catalyst for reduction of various carbonyl compounds using triethylsilane

Mirza‐Aghayan

Kalantari

Boukherroub

2019

Applied Organom Chemis

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“…The role of the graphene support in the performance of the heterogeneous catalysts for the oxidation of alcohols has been widely examined in these publications [53,67,85,[91][92][93][94][95][96]. From our earlier publication, it was found that ZnOx nanoparticles behaved as an excellent promoter in the manganese carbonate catalyst, and the ZnOx(1%)-MnCO3 catalyst was found to be the best among the various catalysts tested for the aerobic oxidation of aromatic alcohols to their corresponding aldehydes [68].…”

Section: Role Of Hrg On the Catalytic Performancementioning

confidence: 99%

Mixed Zinc/Manganese on Highly Reduced Graphene Oxide: A Highly Active Nanocomposite Catalyst for Aerial Oxidation of Benzylic Alcohols

et al. 2017

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Nanocomposites of highly reduced graphene oxide (HRG) and ZnO x nanoparticles doped manganese carbonate containing different percentages of HRG were prepared via a facile co-precipitation method.The prepared sample calcined at 300 • C yielded i.e., ZnO x (1%)-MnCO 3 /(X%)HRG (where X = 0-7), calcination at 400 • C and 500 • C, yielded different manganese oxides i.e., ZnO x (1%)-MnO 2 /(X%)HRG and ZnO x (1%)-Mn 2 O 3 /(X%)HRG respectively. The prepared catalyst were subjected to catalytic evaluation and a comparative catalytic study between carbonates and oxides for the liquid-phase aerobic oxidation of benzylic alcohols to corresponding aldehydes using molecular oxygen as an eco-friendly oxidant without adding additives or bases. The influence of various parameters such as percentage of HRG, reaction time, catalyst amount, calcination and reaction temperature was systematically examined to optimize reaction conditions using oxidation of benzyl alcohol as a substrate model. It was found that the catalytic performance is remarkably enhanced after using HRG as catalyst co-dopant for the aerobic oxidation of alcohols, possibly owing to the presence of carbon defects and oxygenated functional groups on HRG surface. The as-synthesized catalysts were characterized by SEM, EDX, XRD, Raman, TGA, BET, and FT-IR. Under optimal conditions, the catalyst with composition ZnO x (1%)-MnCO 3 /(1%)HRG calcined at 300 • C exhibited remarkable specific activity (57.1 mmol·g −1 ·h −1 ) with 100% conversion of benzyl alcohol and more than 99% product selectivity within extremely short time (7 min). The as-prepared catalyst was re-used up to five consecutive times without significant decrease in its activity and selectivity. To the best of our knowledge, the achieved specific activity is the highest so far compared to the earlier reported catalysts used for the benzyl alcohol oxidation. A wide range of substituted benzylic and aliphatic alcohols were selectively oxidized into their corresponding aldehydes with complete convertibility and selectivity in short reaction times without over-oxidation to the acids. Due to their significant low cost, superior reproducibility, excellent catalytic efficiency, the ZnO x (1%)-MnCO 3 /(X%)HRG nanocomposites possess several application prospect in other organic chemistry reactions.

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“…For instance, Pd nanoparticles (PdNPs) loaded on graphene turned out to be an effective catalyst in the Suzuki–Miyaura coupling reaction . Recently, we have investigated the use of the palladium nanoparticles loaded on reduced graphene oxide (PdNPs/rGO) nanocomposite in the presence of triethylsilane for the reduction of alcohol compounds to their respective methylene derivatives . In continuation of our investigation of graphite oxide and its derivatives, we report a general method for the preparation of PdNPs loaded on reduced graphene oxide functionalized with diethylenetriamine (PdNPs/rGO‐NH 2 ).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we have investigated the use of the palladium nanoparticles loaded on reduced graphene oxide (PdNPs/rGO) nanocomposite in the presence of triethylsilane for the reduction of alcohol compounds to their respective methylene derivatives . In continuation of our investigation of graphite oxide and its derivatives, we report a general method for the preparation of PdNPs loaded on reduced graphene oxide functionalized with diethylenetriamine (PdNPs/rGO‐NH 2 ). The PdNPs/rGO‐NH 2 material was identified by different analytical tools and its catalytic activity was examined for C–C bond formation via the Mizoroki–Heck coupling reaction (Schemes and ).…”

Section: Introductionmentioning

confidence: 99%

Pd nanoparticles supported on reduced graphene oxide as an effective and reusable heterogeneous catalyst for the Mizoroki–Heck coupling reaction

Mirza‐Aghayan

Mohammadi

Addad

et al. 2020

Applied Organom Chemis

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A general method for the synthesis of palladium nanoparticles loaded on reduced graphene oxide functionalized with diethylenetriamine (PdNPs/rGO‐NH2) using a sonochemical procedure is described. The heterogeneous nanocomposite was characterized by Fourier transform infrared spectroscopy, X‐ray diffraction, scanning electron microscopy, energy dispersive X‐ray, thermogravimetric analysis, high‐angle annular dark field scanning transmission electron microscopy, X‐ray photoelectron spectroscopy, UV–visible absorption, and inductively coupled plasma optical emission spectrometry. The PdNPs/rGO‐NH2 was very effective for the Mizoroki–Heck coupling reaction of several aryl iodide compounds with different alkenes in the presence of triethylamine. The reaction provides the coupling products in good to excellent yields (59–100%). Additionally, the PdNPs/rGO‐NH2 catalyst can be reutilized for six successive runs without any apparent diminution of its catalytic reactivity.

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Palladium nanoparticles supported on reduced graphene oxide as an efficient catalyst for the reduction of benzyl alcohol compounds

Cited by 30 publications

References 34 publications

Palladium oxide nanoparticles supported on graphene oxide: A convenient heterogeneous catalyst for reduction of various carbonyl compounds using triethylsilane

Palladium oxide nanoparticles supported on graphene oxide: A convenient heterogeneous catalyst for reduction of various carbonyl compounds using triethylsilane

Mixed Zinc/Manganese on Highly Reduced Graphene Oxide: A Highly Active Nanocomposite Catalyst for Aerial Oxidation of Benzylic Alcohols

Pd nanoparticles supported on reduced graphene oxide as an effective and reusable heterogeneous catalyst for the Mizoroki–Heck coupling reaction

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