Methods for suppressing isomerization of olefin metathesis products
AssigneeElevance Renewable Sciences, Inc.
InventorsBruce E. Firth, Sharon E. Kirk
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Abstract
A method for suppressing isomerization of an olefin metathesis product produced in a metathesis reaction includes adding an isomerization suppression agent to a mixture that includes the olefin metathesis product and residual metathesis catalyst from the metathesis reaction under conditions that are sufficient to passivate at least a portion of the residual metathesis catalyst. The isomerization suppression agent includes (i) a salt and/or an ester of a phosphorous oxo acid, and/or (ii) a derivative of the phosphorous oxo acid in which at least one P—H bond has been replaced by a P—C bond, and/or (iii) a salt and/or an ester of the derivative. Methods of refining natural oils are described.
Claims67
A method for suppressing isomerization of an olefin metathesis product produced in a metathesis reaction, the method comprising:
- adding an isomerization suppression agent to a mixture that comprises the olefin metathesis product and residual metathesis catalyst from the metathesis reaction under conditions that are sufficient to passivate at least a portion of the residual metathesis catalyst;
- wherein the isomerization suppression agent comprises (i) a salt and/or a substantially water-insoluble ester of a phosphorous oxo acid, and/or (ii) a derivative of the phosphorous oxo acid in which at least one P—H bond has been replaced by a P—C bond, and/or (iii) a salt and/or an ester of the derivative.
A method for suppressing isomerization of an olefin metathesis product produced in a metathesis reaction, the method comprising:
- adding an isomerization suppression agent to a mixture that comprises the olefin metathesis product and residual metathesis catalyst from the metathesis reaction under conditions that are sufficient to passivate at least a portion of the residual metathesis catalyst;
- and
- processing the mixture to provide a fraction that comprises the olefin metathesis product and/or a derivative thereof, wherein the isomerization suppression agent is not removed from the mixture prior to the processing;
- wherein the isomerization suppression agent comprises (i) a salt and/or an ester of a phosphorous oxo acid, and/or (ii) a derivative of the phosphorous oxo acid in which at least one P—H bond has been replaced by a P—C bond, and/or (iii) a salt and/or an ester of the derivative.
Dependencies are inferred from the claim text.