USE OF SOLUBLE METAL SALTS IN METATHESIS REACTIONS

摘要

The present invention describes the use of soluble metal salts to reduce impurities and metathesis catalysts poisons from olefinic feedstocks to improve olefin metathesis efficiency. The soluble metal salts were added to the olefinic feedstocks to prevent peroxides and catalyst poisons from inhibiting the metathesis catalyst. The soluble metal salts remain in the olefinic feedstocks and are used without further purification in the olefin metathesis reactions. The key to this invention is the soluble metal salt compounds do not inhibit the olefin metathesis catalysts but unexpectedly increase olefin metathesis catalyst efficiency while prior art heterogeneous metal complexes sequester the olefin metathesis catalyst, preventing olefin metathesis.

主权项

1. A method for improving the olefin metathesis of an olefinic feedstock, comprising:
providing an olefinic feedstock; combining the olefinic feedstock with at least one soluble metal salt to form an olefinic feedstock composition; subjecting the olefinic feedstock composition to conditions effective to reduce the concentration of at least one impurity in the olefinic feedstock; combining the olefinic feedstock composition with at least one olefin metathesis catalyst; and subjecting the olefinic feedstock composition to conditions effective to promote an olefin metathesis reaction.