Journal
REACTION KINETICS MECHANISMS AND CATALYSIS
Volume 127, Issue 2, Pages 715-726Publisher
SPRINGER
DOI: 10.1007/s11144-019-01589-7
Keywords
Graphene oxide; Immobilization; Amino-functionalized basic ionic liquid; Transesterification
Categories
Funding
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center [ACGM2018-03-16]
- National Natural Science Foundation of China [21673024]
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A basic ionic liquid containing aminopropylimidazolium moiety and OH anion was immobilized on silane-functionalized graphene oxide (GO) by a condensation process, followed by an anion-exchange reaction. The properties of the resulting GO-[Ap-im]OH material were characterized using extensive techniques including FTIR, XPS, AFM, TGA, etc. The material could be used as a transesterification catalyst, affording the expected ester products in good yields under mild reaction conditions. This GO-[Ap-im]OH material with amino groups shows higher activity than GO-[Ap-im]Cl without amino groups. Furthermore, this catalyst could easily be separated from the reaction mixture by filtration and recycled at least 6 times without a noticeable decrease in the catalytic activity. The prominent performance of GO-[Ap-im]OH is attributed to the enhanced basicity of combining amine groups and OH anions as well as less mass-transfer resistance of laminar GO.
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