Versatilities of graphene-based catalysts in organic transformations

Garg, Bhaskar; Ling, Yong‐Chien

doi:10.1680/gmat.12.00008

Cited by 47 publications

(25 citation statements)

References 107 publications

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“…Therefore, heterogenization of palladium catalysts is extremely important from both the environmentally sustainable chemical processes and economic standpoints. In recent years, various successful methods which use palladium on various supports such as polymers, 4 modified silicas, 3a magnetite, 5 mesoporous materials, 6 ionic liqiuids 7 , and graphene 8 were developed. In this regard, challenging subjects for investigation include designing new heterogeneous catalytic systems with concomitant mild reaction conditions, using low amount of expensive palladium species, shortening of the reaction times, improving the low reactivity of aryl bromides and chlorides and conducting reactions in green solvents such as water.…”

Section: Introductionmentioning

confidence: 99%

A novel polymer containing phosphorus–nitrogen ligands for stabilization of palladium nanoparticles: an efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water

2015

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A new polymer containing phosphorus and nitrogen ligands was successfully synthesized, characterized and used for the stabilization of highly monodispersed palladium nanoparticles having an average diameter of 2-3 nm. The thermally stable heterogeneous catalyst was successfully applied in Suzuki-Miyaura and copper-free Sonogashira-Hagihara coupling reactions of aryl halides under low palladium loading conditions. Reactions were proceeded in neat water without using any organic co-solvents. The catalyst was successfully recycled for the sample Suzuki-Miyaura reaction nine consecutive times with small drop in catalytic activity.

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Section: Introductionmentioning

confidence: 99%

A novel polymer containing phosphorus–nitrogen ligands for stabilization of palladium nanoparticles: an efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water

2015

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“…Graphene is an analog of a giant polycyclic aromatic hydrocarbon (PAH). Graphene and its derivatives used in various chemical transformations as catalytic materials namely in oxidation, addition, condensation, esterification, hydration, c‐c coupling, amide synthesis, dehydrogenation, decarboxylation cycloaddition, ring opening of epoxide, ring opening polymerization, etc . Due to sheet structure, graphene has a wide open two‐sided surface which contributes extraordinarily large specific surface area (2630 m 2 g −1 ).…”

Section: Nano‐graphenementioning

confidence: 99%

“…Graphene and its derivatives used in various chemical transformations as catalytic materials namely in oxidation, addition, condensation, esterification, hydration, c-c coupling, amide synthesis, dehydrogenation, decarboxylation cycloaddition, ring opening of epoxide, ring opening polymerization, etc. [21] Due to sheet structure, graphene has a wide open two-sided surface which contributes extraordinarily large specific surface area (2630 m 2 g À 1 ). Graphene has excellent electrical (σ = 64 mS cm À 1 ) and the thermal conductivity (k = 5x103 W m À 1 K À 1 ) which make it more attractive for developing new photocatalysts and electrocatalysts.…”

Section: Chemistry Of Nano-graphenementioning

confidence: 99%

Nano‐Graphene as Groundbreaking Miracle Material: Catalytic and Commercial Perspectives

Singh

Hussain

2018

ChemistrySelect

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Over the past decade, nano‐graphene has emerged as one of the miraculous materials to mankind because of its outstanding electronic, optical, thermal, and mechanical properties. Unique characteristics of nano‐graphene make it more attractive for development of new metal‐free green heterogeneous catalysts especially for advance catalysis like photo catalysts, electrocatalysts, and organocatalysts. This review critically discusses the characterization techniques, catalysis, energy, and environmental applications of nano‐graphene. A systematic design of economic challenges, health and safety concerns, and industrial life cycle assessment (LCA) to realize the commercial scale exploitation of nano‐graphene is also reviewed. At the end, the challenges and opportunities for the future development of nano‐graphene in regards to its sustainability and affordability are described.

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“…Monodispersed Pd nanoparticles (8,11, and 13 nm in diameter) were deposited on CNFs and used to study the effect of the support nature on the selective acetylene hydrogenation. 77 Antipathetic size dependence of TOF disappeared at particle sizes bigger than 11 nm.…”

Section: Selective Hydrogenation Of Acetylenementioning

confidence: 99%

Heterogeneous Catalysis on Nanostructured Carbon Material Supported Catalysts

2015

Nanostructured Carbon Materials for Catalysis

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For almost twenty years there has been an increasing interest in the use of nanostructured carbon materials as catalyst supports. 1-16 Following the nanotechnology wave, a wide variety of carbon nanomaterials has been investigated as catalyst supports, including fullerenes, CNTs, CNFs, carbon onions, nanodiamonds, FLG or GO. CNTs and CNFs, which constitute a new family of support offering a good compromise between the advantages of AC and high surface area graphite have been particularly studied. The main advantages offered by CNT or CNF supports are: 17 (i) the high purity of the material can avoid self-poisoning; (ii) the mesoporous nature of these supports can be of interest for liquid-phase reactions, thus limiting the mass transfer; (iii) the high thermal conductivity that limits hot-spots that can damage the catalyst; (iv) their well-defined and tunable structure; (v) their rich surface chemistry that offers numerous perspectives for adsorption and dispersion of the active phase; and (vi) the specific metal support interactions, due to high electrical conductivity of the support and to the tunable orientation of the graphene layers, that exist and that can directly affect catalytic activity and selectivity. The possibility to perform catalysis in a confined space is also of great interest. 6,18 From a theoretical viewpoint, graphene provides the ultimate two-dimensional model of a catalytic support. The reason is related to its high theoretical surface area (ca. 2630 m 2 g −1 ), high conductivity, unique graphitized basal plane structure and chemical tolerance. FLG,

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Versatilities of graphene-based catalysts in organic transformations

Cited by 47 publications

References 107 publications

A novel polymer containing phosphorus–nitrogen ligands for stabilization of palladium nanoparticles: an efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water

A novel polymer containing phosphorus–nitrogen ligands for stabilization of palladium nanoparticles: an efficient and recyclable catalyst for Suzuki and Sonogashira reactions in neat water

Nano‐Graphene as Groundbreaking Miracle Material: Catalytic and Commercial Perspectives

Heterogeneous Catalysis on Nanostructured Carbon Material Supported Catalysts

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