Selective catalytic production of linear alpha olefins from lactones and unsaturated carboxylic acids
AssigneeWisconsin Alumni Research Foundation
InventorsJames Anthony Dumesic, Dong Wang, Sikander Hussain Hakim, David Martin Alonso
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Abstract
Described is a method to make linear alpha olefins. The method includes the steps of contacting a feedstock having a lactone and/or an unsaturated carboxylic acid with a solid acid catalyst having acidic catalytic sites including Lewis acid catalytic sites, for a time and a temperature wherein at least a fraction of the lactone and/or unsaturated carboxylic acid present in the feedstock is converted into a linear alpha olefin. The method may optionally take place in the presence of water. The solid acid catalyst should preferably have at least 50% Lewis acid catalytic sites.
Claims34
A method to make linear alpha olefins comprising:
- a) contacting in a reactor a feedstock comprising a component selected from the group consisting of at least one lactone, at least one unsaturated carboxylic acid, at least one hydroxy carboxylic acid, and a combination thereof, with a solid acid catalyst having acidic catalytic sites, wherein the acidic catalytic sites include Lewis acid catalytic sites, for a time and a temperature wherein at least a fraction of the component is converted into linear alpha olefins;
- and
- b) removing the linear alpha olefins from the solid acid catalyst by flowing an inert gas through the reactor, thereby minimizing isomerization of the linear alpha olefins to internal olefins;
- wherein the solid acid catalyst is selected from the croup consisting of γ-Al2O3, ≤8 wt % WOx supported on γ-Al2O3 and MgO;
- and
- wherein the linear alpha olefins comprise at least 71.0 mol % of all olefins formed in the method.
Dependencies are inferred from the claim text.