| 摘要 |
The present invention provides processes for the formation of fatty acid alkyl esters, which may be used as biodiesel. In particular, the invention provides an esterification process in which a lipid material is contacted with an alcohol in the presence of a metal halide or metal alkoxide conjugated to a solid support. Also provided is a transesterification process in which a lipid material is contacted with an alcohol in the presence of an N-heterocyclic carbene. Also provided is a combination esterification and transesterification process in which a lipid material is contacted with a metal halide or metal alkoxide conjugated to a solid support, and then is contacted with an N-heterocyclic carbene or an alkaline catalyst.
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