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Title: Dilute acid/metal salt hydrolysis of lignocellulosics

Abstract

A modified dilute acid method of hydrolyzing the cellulose and hemicellulose in lignocellulosic material under conditions to obtain higher overall fermentable sugar yields than is obtainable using dilute acid alone, comprising: impregnating a lignocellulosic feedstock with a mixture of an amount of aqueous solution of a dilute acid catalyst and a metal salt catalyst sufficient to provide higher overall fermentable sugar yields than is obtainable when hydrolyzing with dilute acid alone; loading the impregnated lignocellulosic feedstock into a reactor and heating for a sufficient period of time to hydrolyze substantially all of the hemicellulose and greater than 45% of the cellulose to water soluble sugars; and recovering the water soluble sugars.

Inventors:
 [1];  [2]
  1. (Golden, CO)
  2. (Lakewood, CO)
Publication Date:
Research Org.:
Midwest Research Institute
OSTI Identifier:
874609
Patent Number(s):
US 6423145
Assignee:
Midwest Research Institute (Kansas City, MO) NREL
DOE Contract Number:  
AC36-99GO10337
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
dilute; acidmetal; salt; hydrolysis; lignocellulosics; modified; acid; method; hydrolyzing; cellulose; hemicellulose; lignocellulosic; material; conditions; obtain; overall; fermentable; sugar; yields; obtainable; comprising; impregnating; feedstock; mixture; amount; aqueous; solution; catalyst; metal; sufficient; provide; loading; impregnated; reactor; heating; period; time; hydrolyze; substantially; 45; water; soluble; sugars; recovering; aqueous solution; metal salt; sufficient period; lignocellulosic material; /127/106/

Citation Formats

Nguyen, Quang A., and Tucker, Melvin P. Dilute acid/metal salt hydrolysis of lignocellulosics. United States: N. p., 2002. Web.
Nguyen, Quang A., & Tucker, Melvin P. Dilute acid/metal salt hydrolysis of lignocellulosics. United States.
Nguyen, Quang A., and Tucker, Melvin P. Tue . "Dilute acid/metal salt hydrolysis of lignocellulosics". United States. doi:. https://www.osti.gov/servlets/purl/874609.
@article{osti_874609,
title = {Dilute acid/metal salt hydrolysis of lignocellulosics},
author = {Nguyen, Quang A. and Tucker, Melvin P.},
abstractNote = {A modified dilute acid method of hydrolyzing the cellulose and hemicellulose in lignocellulosic material under conditions to obtain higher overall fermentable sugar yields than is obtainable using dilute acid alone, comprising: impregnating a lignocellulosic feedstock with a mixture of an amount of aqueous solution of a dilute acid catalyst and a metal salt catalyst sufficient to provide higher overall fermentable sugar yields than is obtainable when hydrolyzing with dilute acid alone; loading the impregnated lignocellulosic feedstock into a reactor and heating for a sufficient period of time to hydrolyze substantially all of the hemicellulose and greater than 45% of the cellulose to water soluble sugars; and recovering the water soluble sugars.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2002},
month = {Tue Jan 01 00:00:00 EST 2002}
}

Patent:

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