Method of making hydrogenated metathesis products
View Patent ↗Disclosed is a method of making hydrogenated metathesis products comprising the steps of: (a) providing a metathesis composition; (b) providing a metathesis catalyst comprising a transition metal; (c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal; (d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and (e) removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition.
1. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the metathesis composition is a polyol ester.
2. The method of claim 1 , wherein the metathesis composition is a triacylglyceride.
3. The method of claim 2 , wherein the metathesis composition is a vegetable oil.
4. The method of claim 3 , wherein the vegetable oil is soybean oil.
5. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the metathesis catalyst is a metal carbene catalyst based upon a transition metal.
6. The method of claim 5 , wherein the transition metal is ruthenium, molybdenum, osmium, chromium, rhenium, or tungsten.
7. The method of claim 6 , wherein the transition metal is ruthenium.
8. The method of claim 7 , wherein the metathesis catalyst is selected from the group of:
where Ph is phenyl, Mes is mesityl, py is pyridine, Cp is cyclopentyl, and Cy is cyclohexyl.
9. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the hydrogenation catalyst is a homogeneous catalyst or a heterogeneous catalyst.
10. The method of claim 9 , wherein the hydrogenation catalyst comprises nickel, copper, palladium, or platinum.
11. The method of claim 10 , wherein the hydrogenation catalyst comprises nickel, copper, palladium, or platinum on a silica support.
12. The method of claim 10 , wherein the hydrogenation catalyst comprises nickel, copper, palladium, or platinum on an alumina support.
13. The method of claim 10 , wherein the hydrogenation catalyst comprises nickel, copper, palladium, or platinum on an alumina/silica support.
14. The method of claim 10 , wherein the hydrogenation catalyst comprises nickel, copper, palladium, or platinum on a carbon support.
15. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the one or more hydrogenated metathesis products contains about 100 ppm or less of the metathesis catalyst transition metal.
16. The method of claim 15 , wherein the hydrogenated metathesis products contains about 10 ppm or less of the metathesis catalyst transition metal.
17. The method of claim 15 , wherein the hydrogenated metathesis product contains about 1 ppm or less of the metathesis catalyst transition metal.
18. The method of claim 15 , wherein the hydrogenated metathesis product contains about 0.1 ppm or less of the metathesis catalyst transition metal.
19. The method of claim 1 , wherein the metathesis is self-metathesis, cross-metathesis, ring-opening metathesis, ring-opening metathesis polymerizations (ROMP), ring-closing metathesis (RCM), or acyclic diene metathesis (ADMET).
20. The method of claim 7 , wherein the metathesis catalyst is
where Cy is cyclohexyl.
21. The method of claim 1 , wherein the hydrogenated metathesis product comprises a wax.
22. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the hydrogenated metathesis product is partially hydrogenated or fully hydrogenated.
23. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the hydrogenation step is conducted at a temperature of about 20° C. to about 250° C.
24. The method of claim 23 , wherein the hydrogenation step is conducted at a temperature of about 120° C. to 220° C.
25. A method of making hydrogenated metathesis products comprising the steps of:
(a) providing a metathesis composition;
(b) providing a metathesis catalyst comprising a transition metal;
(c) metathesizing at least a portion of the metathesis composition in the presence of the metathesis catalyst to form a first composition comprising one or more metathesis products and a transition metal;
(d) hydrogenating at least a portion of the first composition in the presence of a hydrogenation catalyst to form a second composition comprising one or more hydrogenated metathesis products, transition metal, and hydrogenation catalyst; and removing at least a portion of the hydrogenation catalyst from the second composition, wherein the removal of the hydrogenation catalyst removes at least a portion of the transition metal of the metathesis catalyst from the second composition, wherein the hydrogenation step is conducted at a hydrogen pressure of about 15 to about 3000 psig.
26. The method of claim 25 , wherein the hydrogenation step is conducted at a hydrogen gas pressure of about 40 to about 100 psig.