Methods and systems for generating polyols
First Claim
1. A method of generating an oxygenated compound, the method comprising the steps of:
- a) contacting a first catalytic material comprising one or more Group VIII metals with a first portion of an aqueous feedstock solution comprising water and at least one water soluble oxygenated hydrocarbon having two or more carbon atoms, at;
i. a temperature of about 80°
C. to 400°
C.;
ii. a weight hourly space velocity of at least about 1.0 gram of the oxygenated hydrocarbon per gram of the first catalytic material per hour; and
iii. a pressure where the water and the oxygenated hydrocarbons are condensed liquids, to produce aqueous phase reforming (APR) hydrogen; and
b) reacting the APR hydrogen with a second portion of the feedstock solution over a second catalytic material, the second catalytic material different than the first catalytic material and selected from the group consisting of;
iron, ruthenium, copper, rhenium, cobalt, nickel, alloys thereof, and mixtures thereof, at;
i. a temperature of about 100°
C. to 300°
C.; and
ii. a pressure of about 200 psig to about 1200 psig, to produce a reaction product comprising one or more oxygenated compounds selected from the group consisting of a polyol, a ketone, an aldehyde, a carboxylic acid and an alcohol.
3 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are methods for generating propylene glycol, ethylene glycol and other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols from biomass using hydrogen produced from the biomass. The methods involve reacting a portion of an aqueous stream of a biomass feedstock solution over a catalyst under aqueous phase reforming conditions to produce hydrogen, and then reacting the hydrogen and the aqueous feedstock solution over a catalyst to produce propylene glycol, ethylene glycal and the other polyols, diols, ketones, aldehydes, carboxylic acids and alcohols. The disclosed methods can be run at lower temperatures and pressures, and allows for the production of oxygenated hydrocarbons without the need for hydrogen from an external source.
-
Citations
27 Claims
-
1. A method of generating an oxygenated compound, the method comprising the steps of:
-
a) contacting a first catalytic material comprising one or more Group VIII metals with a first portion of an aqueous feedstock solution comprising water and at least one water soluble oxygenated hydrocarbon having two or more carbon atoms, at;
i. a temperature of about 80°
C. to 400°
C.;
ii. a weight hourly space velocity of at least about 1.0 gram of the oxygenated hydrocarbon per gram of the first catalytic material per hour; and
iii. a pressure where the water and the oxygenated hydrocarbons are condensed liquids, to produce aqueous phase reforming (APR) hydrogen; and
b) reacting the APR hydrogen with a second portion of the feedstock solution over a second catalytic material, the second catalytic material different than the first catalytic material and selected from the group consisting of;
iron, ruthenium, copper, rhenium, cobalt, nickel, alloys thereof, and mixtures thereof, at;
i. a temperature of about 100°
C. to 300°
C.; and
ii. a pressure of about 200 psig to about 1200 psig, to produce a reaction product comprising one or more oxygenated compounds selected from the group consisting of a polyol, a ketone, an aldehyde, a carboxylic acid and an alcohol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A method of generating propylene glycol comprising the step of contacting a heterogeneous catalyst comprising platinum and iron with an aqueous feedstock solution comprising water and glycerol, at:
-
a) a temperature of about 100°
C. to 300°
C.;
b) a weight hourly space velocity of at least about 1.0 gram of glycerol per gram of the heterogeneous catalyst per hour; and
c) a pressure where the water and the glycerol remain condensed liquids to produce a reaction product comprising propylene glycol. - View Dependent Claims (24)
-
-
25. A composition of matter comprising water, glycerol, carboxylic acid, carbon dioxide, propylene glycol, and a catalyst composition comprising platinum and iron.
-
26. A reactor system for producing oxygenated compounds from a polyol comprising:
-
a) a first reaction bed adapted to receive an aqueous feedstock solution comprising water and at least one water soluble oxygenated hydrocarbon having two or more carbon atoms, the first reaction bed comprising a first catalyst having at least one Group VIII metal configured to contact a first portion of the feedstock solution in a condensed phase to form a reactant stream comprising hydrogen; and
b) a second reaction bed configured to receive the reactant stream from the first reaction bed, the second reaction bed comprising a second catalytic material selected from the group consisting of iron, ruthenium, copper, rhenium, cobalt, nickel, alloys thereof and mixtures thereof, and configured to cause a reaction between the hydrogen and a second portion of the feedstock solution to produce a product stream comprising one or more oxygenated compounds selected from the group consisting of a polyol, a ketone, an aldehyde, a carboxylic acid and an alcohol. - View Dependent Claims (27)
-
Specification