Efficient preparation of acidic ionic liquid-functionalized reduced graphene oxide and its catalytic performance in synthesis of benzimidazole derivatives

Efficient preparation of acidic ionic liquid-functionalized reduced graphene oxide and its... Keywords Benzimidazole  Supported ionic liquid  Catalysis  Graphene Synthesis Introduction Graphene, a material one atomic layer thick, is the first two-dimensional atomic crystal with sp -hybridised carbon atoms in its crystal lattice [1–3]. Chemically exfoliated graphene oxide (GO) and reduced graphene oxide (RGO) are of great interest owing to their exclusive chemical and mechanical properties [4–6]. Oxygen groups at the RGO surface can be considerably modified by adding compounds, such as ionic liquids [7], metal nanoparticles [8], and polymers [9]. Graphene composites have a variety of applications in catalysis, which include Friedel–Crafts addition [10], oxidation of thiols, sulfides and alcohols [11], dehydration of xylose [12] and coupling of acetophenones to benzyl alcohols and arylalkynes to benzyl alcohols [13]. In order to overcome their low dispersity in aqueous solution, functionalisation of graphene sheets (GS) was investigated using covalent or non- covalent methods [14–16]. As a good supporting substrate for active species on account of its high chemical stability, low manufacturing cost and large surface area, the combination of GS and ionic liquids (ILs) incorporating active catalytic species provides new opportunities and solutions for researchers [17]. The application of acidic (Bronsted as well as Lewis) task-specific ionic liquids (TSILs) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Efficient preparation of acidic ionic liquid-functionalized reduced graphene oxide and its catalytic performance in synthesis of benzimidazole derivatives

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Publisher
Springer Netherlands
Copyright
Copyright © 2016 by Springer Science+Business Media Dordrecht
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-016-2727-0
Publisher site
See Article on Publisher Site

Abstract

Keywords Benzimidazole  Supported ionic liquid  Catalysis  Graphene Synthesis Introduction Graphene, a material one atomic layer thick, is the first two-dimensional atomic crystal with sp -hybridised carbon atoms in its crystal lattice [1–3]. Chemically exfoliated graphene oxide (GO) and reduced graphene oxide (RGO) are of great interest owing to their exclusive chemical and mechanical properties [4–6]. Oxygen groups at the RGO surface can be considerably modified by adding compounds, such as ionic liquids [7], metal nanoparticles [8], and polymers [9]. Graphene composites have a variety of applications in catalysis, which include Friedel–Crafts addition [10], oxidation of thiols, sulfides and alcohols [11], dehydration of xylose [12] and coupling of acetophenones to benzyl alcohols and arylalkynes to benzyl alcohols [13]. In order to overcome their low dispersity in aqueous solution, functionalisation of graphene sheets (GS) was investigated using covalent or non- covalent methods [14–16]. As a good supporting substrate for active species on account of its high chemical stability, low manufacturing cost and large surface area, the combination of GS and ionic liquids (ILs) incorporating active catalytic species provides new opportunities and solutions for researchers [17]. The application of acidic (Bronsted as well as Lewis) task-specific ionic liquids (TSILs)

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Sep 16, 2016

References

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