Methods for Treating Substrates Prior to Metathesis Reactions, and Methods for Metathesizing Substrates
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Abstract
A method for treating a substrate prior to a metathesis reaction includes treating the substrate with a first agent configured to mitigate potentially adverse effects of one or more contaminants in the substrate on a catalyst used to catalyze the metathesis reaction. The treating reduces a level of the one or more contaminants by an amount sufficient to enable the metathesis reaction to proceed at a substrate-to-catalyst molar ratio of at least about 7,500 to 1. Methods for metathesizing substrates are described.
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Citations
81 Claims
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1-55. -55. (canceled)
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56. A method of chemically treating a metathesis substrate, comprising:
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providing a composition comprising a metathesis substrate and one or more catalyst poisoning contaminants; and treating the composition to reduce the concentration of at least one of the one or more catalyst poisoning contaminants in the composition; wherein the treating comprises contacting the composition with a metal alkyl compound; and wherein the treating further comprises;
(a) heating the composition to a temperature between 100°
C. and 250°
C.;
(b) contacting the composition with an acid anhydride;
(c) contacting the composition with a desiccant;
or (d) contacting the composition with an adsorbent. - View Dependent Claims (57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81)
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Specification