Solid acid catalyzed hydrolysis of cellulosic materials

Sugar – starch – and carbohydrates – Processes – Carbohydrate manufacture and refining

Reexamination Certificate

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C536S124000

Reexamination Certificate

active

08062428

ABSTRACT:
Provided are methods for the solubilization of cellulose into soluble sugars without the need for high temperatures, high pressures, strong acid solutions, and/or added water. The produced sugars can be fermented into ethanol. In one embodiment, the method comprises contacting a cellulose-containing material with a solid acid material and agitating the cellulose-containing material and the solid acid material for a time sufficient to produce an aqueous solution comprising a quantity of soluble sugars.

REFERENCES:
patent: 4078991 (1978-03-01), Goldstein
patent: 4356060 (1982-10-01), Neckermann et al.
patent: 4415124 (1983-11-01), Carduck et al.
patent: 4461648 (1984-07-01), Foody
patent: 4470851 (1984-09-01), Paszner et al.
patent: 4496106 (1985-01-01), Gross
patent: 4511433 (1985-04-01), Tourmier et al.
patent: 4650689 (1987-03-01), Hedrick
patent: 6022419 (2000-02-01), Torget et al.
patent: 6419788 (2002-07-01), Wingerson
patent: 6620292 (2003-09-01), Wingerson
patent: 6660506 (2003-12-01), Nguyen et al.
patent: 6908995 (2005-06-01), Blount
patent: 2003/0233011 (2003-12-01), Fagan et al.
patent: 2007/0125369 (2007-06-01), Olson et al.
Lenarda et al. Journal of Colloid and Interface Science, 2007, 311, p. 537-534, published online Apr. 23, 2007.
Hahn-Hagerdal et al. Annals of the New York Academy of Sciences, 1984, 434(1), p. 161-163.
Definition of reactant, IUPAC Gold Book, http://goldbook.iupac.org, accessed online on Dec. 15, 2010.
Jakobsson, Eva-Lena, Optimization of the pretreatment of wheat straw for production of bioethanol, Department of Chemical Engineering, Lund University.
Fitzgerald, Richard, Solid Acids Show Potential for Fuel Cell Electrolytes, Physics Today, Jul. 2001.
Sichina, W. J., Characterization of Water of Hydration of Pharmaceuticals Using the Pyris 6 DSC, Thermal Analysis.
Energy Information Administration, Biofuels in the U.S. Transportation Sector, Feb. 2007.
Chem, Turk J., Investivation of the Surface Acidity of a Bentnite Modified by Acid Activation and Thermal Treatment, Mar. 19, 2003.
Roman-Leshkov et al., Production of dimethylfuran for liquid fuels from giomass-dirived carbohydrates, Nature, vol. 447/21, Jun. 2007.
Zhao et al., Metal Chlorides in Ionic Liquid Solvents Convert Sugars to 5-Hydroxmethylfurfural, Science, vol. 316, Jun. 15, 2007.

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