Catalysts and process for hydrogenolysis of sugar alcohols to polyols
Abstract
The present invention provides a process for preparation of low molecular weight polyols from high molecular weight polyols in a hydrogenolysis reaction under elevated temperature and hydrogen pressure. The process comprises providing in a reaction mixture the polyols, a base, and a metal catalyst prepared by depositing a transition metal salt on an inert support, reducing the metal salt to the metal with hydrogen, and passivating the metal with oxygen, and wherein the catalyst is reduced with hydrogen prior to the reaction. In particular, the process provides for the preparation of glycerol, propylene glycol, and ethylene glycol from sugar alcohols such as sorbitol or xylitol. In a preferred process, the metal catalyst comprises ruthenium which is deposited on an alumina, titania, or carbon support, and the dispersion of the ruthenium on the support increases during the hydrogenolysis reaction.
- Inventors:
-
- East Lansing, MI
- Okemos, MI
- Haslett, MI
- West Richland, WA
- Richland, WA
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 874005
- Patent Number(s):
- 6291725
- Application Number:
- 09/518,860
- Assignee:
- Board of Trustees operating Michigan State University (East Lansing, MI); Battelle Memorial Institute, Pacific Northwest Laboratory (Richland, WA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- catalysts; process; hydrogenolysis; sugar; alcohols; polyols; provides; preparation; molecular; weight; reaction; elevated; temperature; hydrogen; pressure; comprises; providing; mixture; base; metal; catalyst; prepared; depositing; transition; salt; inert; support; reducing; passivating; oxygen; reduced; prior; particular; glycerol; propylene; glycol; ethylene; sorbitol; xylitol; preferred; ruthenium; deposited; alumina; titania; carbon; dispersion; increases; catalyst comprises; propylene glycol; process provides; ethylene glycol; comprises providing; elevated temperature; transition metal; molecular weight; reaction mixture; metal salt; process comprises; metal catalyst; hydrogen pressure; weight poly; preferred process; inert support; carbon support; catalyst prepared; weight polyols; /999/
Citation Formats
Chopade, Shubham P, Miller, Dennis J, Jackson, James E, Werpy, Todd A, Frye, Jr., John G, and Zacher, Alan H. Catalysts and process for hydrogenolysis of sugar alcohols to polyols. United States: N. p., 2001.
Web.
Chopade, Shubham P, Miller, Dennis J, Jackson, James E, Werpy, Todd A, Frye, Jr., John G, & Zacher, Alan H. Catalysts and process for hydrogenolysis of sugar alcohols to polyols. United States.
Chopade, Shubham P, Miller, Dennis J, Jackson, James E, Werpy, Todd A, Frye, Jr., John G, and Zacher, Alan H. Tue .
"Catalysts and process for hydrogenolysis of sugar alcohols to polyols". United States. https://www.osti.gov/servlets/purl/874005.
@article{osti_874005,
title = {Catalysts and process for hydrogenolysis of sugar alcohols to polyols},
author = {Chopade, Shubham P and Miller, Dennis J and Jackson, James E and Werpy, Todd A and Frye, Jr., John G and Zacher, Alan H},
abstractNote = {The present invention provides a process for preparation of low molecular weight polyols from high molecular weight polyols in a hydrogenolysis reaction under elevated temperature and hydrogen pressure. The process comprises providing in a reaction mixture the polyols, a base, and a metal catalyst prepared by depositing a transition metal salt on an inert support, reducing the metal salt to the metal with hydrogen, and passivating the metal with oxygen, and wherein the catalyst is reduced with hydrogen prior to the reaction. In particular, the process provides for the preparation of glycerol, propylene glycol, and ethylene glycol from sugar alcohols such as sorbitol or xylitol. In a preferred process, the metal catalyst comprises ruthenium which is deposited on an alumina, titania, or carbon support, and the dispersion of the ruthenium on the support increases during the hydrogenolysis reaction.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 18 00:00:00 EDT 2001},
month = {Tue Sep 18 00:00:00 EDT 2001}
}
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Works referenced in this record:
Catalytic hydrogenolysis of saccharides. II. Formation of glycerol
journal, February 1969
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journal, November 1991
- Montassier, C.; Ménézo, J. C.; Hoang, L. C.
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