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 , metal nanoparticles , and polymers . Graphene composites have a variety of applications in catalysis, which include Friedel–Crafts addition , oxidation of thiols, sulﬁdes and alcohols , dehydration of xylose  and coupling of acetophenones to benzyl alcohols and arylalkynes to benzyl alcohols . 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 . The application of acidic (Bronsted as well as Lewis) task-speciﬁc ionic liquids (TSILs)
Research on Chemical Intermediates – Springer Journals
Published: Sep 16, 2016
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