Hydrogenolysis of 6-carbon sugars and other organic compounds

Compositions – Miscellaneous

Reexamination Certificate

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C514S501000, C514S724000, C514S777000, C568S861000, C568S863000

Reexamination Certificate

active

06841085

ABSTRACT:
Methods for hydrogenolysis are described which use a Re-containing multimetallic catalyst for hydrogenolysis of both C—O and C—C bonds. Methods and compositions for reactions of hydrogen over a Re-containing catalyst with compositions containing a 6-carbon sugar, sugar alcohol, or glycerol are described. It has been surprisingly discovered that reaction with hydrogen over a Re-containing multimetallic catalyst resulted in superior conversion and selectivity to desired products such as propylene glycol.

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Zhang, Z., et al. “Aqueous-Phase Hydrogenation of Lactic Acid to Propylene Glycol.” p. 89-98. 2001.

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