Thermal methods for treating a metathesis feedstock
First Claim
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1. A method of metathesizing a feedstock comprising:
- providing a feedstock comprising a natural oil;
heating the feedstock to a temperature greater than 100°
C. in the absence of oxygen;
holding the feedstock at the temperature for a time sufficient to diminish catalyst poisons in the feedstock; and
following the heating and holding, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock.
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Abstract
Various methods are provided for metathesizing a feedstock. In one aspect, a method includes providing a feedstock comprising a natural oil, heating the feedstock to a temperature greater than 100° C. in the absence of oxygen, holding the feedstock at the temperature for a time sufficient to diminish catalyst poisons in the feedstock, and, following the heating and holding, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock.
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Citations
20 Claims
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1. A method of metathesizing a feedstock comprising:
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providing a feedstock comprising a natural oil; heating the feedstock to a temperature greater than 100°
C. in the absence of oxygen;holding the feedstock at the temperature for a time sufficient to diminish catalyst poisons in the feedstock; and following the heating and holding, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock. - View Dependent Claims (5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 20)
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2. A method of metathesizing a feedstock comprising:
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providing a feedstock comprising a natural oil; heating the feedstock to a temperature greater than 100°
C. in the absence of oxygen;holding the feedstock at the temperature for a time sufficient to diminish catalyst poisons in the feedstock; combining an adsorbent material with the feedstock to diminish catalyst poisons in the feedstock; and following the heating, the holding, and the combining steps, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock. - View Dependent Claims (3, 4)
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8. A method of metathesizing a feedstock comprising:
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providing a feedstock comprising a natural oil; heating the feedstock to a temperature greater than 100°
C. in the absence of oxygen;holding the feedstock at the temperature for a time sufficient to diminish catalyst poisons in the feedstock; cooling the feedstock below approximately 40°
C.following the cooling, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock.
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17. A method of metathesizing a feedstock comprising:
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providing a feedstock comprising a natural oil; heating the feedstock to a temperature greater than 100°
C. in the absence of oxygen for a time sufficient to diminish non-peroxide poisons in the feedstock; andfollowing the heating, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock.
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18. A method of metathesizing a feedstock comprising:
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providing a feedstock comprising a natural oil or a natural oil derivative, wherein the feedstock has a starting peroxide value; heating the feedstock to a temperature greater than 100°
C. in the absence of oxygen for a time sufficient to diminish the starting peroxide value of the feedstock by approximately 80% or more; andfollowing the heating, combining a metathesis catalyst with the feedstock under conditions sufficient to metathesize the feedstock. - View Dependent Claims (19)
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Specification