Method for making aldehydes, alcohols, amides, and carboxylic acids from plastic pyrolysis oil
AssigneeWisconsin Alumni Research Foundation
InventorsGeorge Huber, Houqian Li, Jiayang Wu, Clark Landis
Life of this patent
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Abstract
A method to make primary alcohols, carboxylic acids, amines, and other value-added chemicals from plastic waste. The method includes the steps of pyrolyzing plastic waste to yield pyrolysis oil; hydroformylating the pyrolysis oil in the absence of any added co-reactants to yield a mixture comprising aldehydes; and hydrogenating, oxidizing, aminating, or aldolizing the mixture to yield a product comprising primary alcohols, carboxylic acids, amines, or larger (>C10) chemicals with carbonyl function groups.
Claims8
A method to make primary alcohols, di-alcohols, or esters from plastic waste, the method comprising:
- (a) providing pyrolysis oil and separating the pyrolysis oil into a light cut having a boiling point less than about 175° C. and a heavy cut having a boiling point greater than about 175° C., where the light cut and the heavy cut comprise olefins, wherein the light cut consists essentially of compounds having less than 11 carbon atoms, and the heavy cut consists essentially of compounds having more than 10 carbon atoms;
- and then
- (b) hydroformylating the light cut and/or the heavy cut, independently, at a pressure between about 50 atm and about 70 atm and at a temperature between about 100° C. and 120° C., wherein at least a portion of the olefins in the light cut and/or the heavy cut are converted to aldehydes, to yield corresponding light and/or heavy mixtures comprising aldehydes;
- (c) separately hydrogenating the light mixture and/or the heavy mixture of step (b) to yield corresponding product mixture(s) comprising a product selected from the group consisting of primary alcohols, di-alcohols, esters, and combinations thereof.
Dependencies are inferred from the claim text.