As a substitute for traditional fossil fuels, Biodiesel has attracted more attention recently for its nature of
environmental friendliness. As catalysts, Ionic liquids which possess unique properties have found important applications
for many reactions including production of biodiesel by transesterification. The paper gives a review on the
feasibility of using ionic liquids as the catalysts in biodiesel synthesis by transesterification, which is summarized
as basic ionic liquid catalyst systems, acidic ionic liquid catalyst systems, and solid material supported ionic liquid
Keywords: Biodiesel, ionic liquid, transesterification, catalyst.
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