Acid hydrolysis of cellulose to yield glucose
First Claim
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1. A process for hydrolyzing the cellulose in a cellulosic material to obtain glucose therefrom comprising:
- contacting the cellulosic material either with a solvent comprising ethylenediamine, cadmium hydroxide and water or with a solvent comprising a chelating metal caustic swelling agent whereby the solvent dissolves the cellulose to form a solution,precipitating the cellulose from the solution; and
hydrolyzing the precipitated cellulose with acid to obtain glucose.
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Abstract
A process to yield glucose from cellulose through acid hydrolysis. Cellulose is recovered from cellulosic materials, preferably by pretreating the cellulosic materials by dissolving the cellulosic materials in Cadoxen or a chelating metal caustic swelling solvent and then precipitating the cellulose therefrom. Hydrolysis is accomplished using an acid, preferably dilute sulfuric acid, and the glucose is yielded substantially without side products. Lignin may be removed either before or after hydrolysis.
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8 Claims
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1. A process for hydrolyzing the cellulose in a cellulosic material to obtain glucose therefrom comprising:
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contacting the cellulosic material either with a solvent comprising ethylenediamine, cadmium hydroxide and water or with a solvent comprising a chelating metal caustic swelling agent whereby the solvent dissolves the cellulose to form a solution, precipitating the cellulose from the solution; and
hydrolyzing the precipitated cellulose with acid to obtain glucose. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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