Direct catalytic conversion of cellulose materials to ethanol

Details Direct catalytic conversion of cellulose materials to ethanol Direct catalytic conversion of cellulose materials to ethanol

2007-12-17

2010-10-19

Price, Elvis O (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S878000, C568S890000, C435S105000, C435S165000

Reexamination Certificate

active

07816568

ABSTRACT:
Catalytic reactions conducted during acid digestion of cellulose materials, including paper, a wide range of grasses including prairie grass, switch grass, pine wood sawdust, bagasse dried after sugar cane processing, cotton, waste cellulose products and starch materials, are taught for direct conversion to ethanol. The cellulose material is thoroughly wet in concentrated sulfuric acid in the presence of transition metal complexes possessing a degree of symmetry. Ethanol formed during the reaction can be removed by distillation affording a continuous process.

REFERENCES:
patent: 6660506 (2003-12-01), Nguyen et al.

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