| abstract |
The present invention relates to a method for metathesis of olefin (s) and more particularly to ester (s) of fatty acid comprising at least one unsaturation. The process according to the invention comprises contacting at least one fatty acid ester with a metathesis catalyst, in which the ester is treated with a sorbent before it is brought into contact with the metathesis catalyst, the sorbent having a pH of less than 6.0 and having at least 65% by weight of SiO2, the weight percentage being given on the total weight of sorbent. |