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Title: Two-stage dehydration of sugars

Abstract

The invention includes methods for producing dianhydrosugar alcohol by providing an acid catalyst within a reactor and passing a starting material through the reactor at a first temperature. At least a portion of the staring material is converted to a monoanhydrosugar isomer during the passing through the column. The monoanhydrosugar is subjected to a second temperature which is greater than the first to produce a dianhydrosugar. The invention includes a method of producing isosorbide. An initial feed stream containing sorbitol is fed into a continuous reactor containing an acid catalyst at a temperature of less than 120.degree. C. The residence time for the reactor is less than or equal to about 30 minutes. Sorbitol converted to 1,4-sorbitan in the continuous reactor is subsequently provided to a second reactor and is dehydrated at a temperature of at least 120.degree. C. to produce isosorbide.

Inventors:
 [1];  [1];  [2];  [3]
  1. Kennewick, WA
  2. Richland, WA
  3. West Richland, WA
Issue Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
979383
Patent Number(s):
7615652
Application Number:
11/341,930
Assignee:
Battelle Memorial Institute (Richland, WA)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07D - HETEROCYCLIC COMPOUNDS
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Holladay, Johnathan E, Hu, Jianli, Wang, Yong, and Werpy, Todd A. Two-stage dehydration of sugars. United States: N. p., 2009. Web.
Holladay, Johnathan E, Hu, Jianli, Wang, Yong, & Werpy, Todd A. Two-stage dehydration of sugars. United States.
Holladay, Johnathan E, Hu, Jianli, Wang, Yong, and Werpy, Todd A. Tue . "Two-stage dehydration of sugars". United States. https://www.osti.gov/servlets/purl/979383.
@article{osti_979383,
title = {Two-stage dehydration of sugars},
author = {Holladay, Johnathan E and Hu, Jianli and Wang, Yong and Werpy, Todd A},
abstractNote = {The invention includes methods for producing dianhydrosugar alcohol by providing an acid catalyst within a reactor and passing a starting material through the reactor at a first temperature. At least a portion of the staring material is converted to a monoanhydrosugar isomer during the passing through the column. The monoanhydrosugar is subjected to a second temperature which is greater than the first to produce a dianhydrosugar. The invention includes a method of producing isosorbide. An initial feed stream containing sorbitol is fed into a continuous reactor containing an acid catalyst at a temperature of less than 120.degree. C. The residence time for the reactor is less than or equal to about 30 minutes. Sorbitol converted to 1,4-sorbitan in the continuous reactor is subsequently provided to a second reactor and is dehydrated at a temperature of at least 120.degree. C. to produce isosorbide.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {11}
}

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Works referenced in this record:

Isosorbide. Preparation, Properties and Chemistry
journal, January 1986