关键词: 生物柴油, 固体酸, 酯交换

Abstract: Biodiesel is a kind of environment friendly renewable energy. Currently，it can be prepared through esterification and transesterification reaction in the presence of solid acids as highly efficient catalysts. In this recyclable and environment friendly process，it is easy to separate the catalyst from the reaction mixture. In this paper，the preparation，activity，and catalytic behavior of several types of solid acid catalysts，including solid superacids，supported solid acids，metal oxides and complexes，zeolites，cation exchange resins，ionic liquids and heteropolyacids，as well as their applications in biodiesel preparation were reviewed. Research on the physic-chemical properties and the cost of solid acids in the preparation of biodiesel are also prospected.

Key words: biodiesel, solid acid, transesterification