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Saccharides such as glucose, fructose, starch, etc. may be hydrogenated by treatment with hydrogen in the presence of a catalyst which comprises a metal of Group VIII of the Periodic Table composited on a support comprising a carbonaceous pyropolymer possessing recurring units containing at least ca

Saccharides such as glucose, fructose, starch, etc. may be hydrogenated by treatment with hydrogen in the presence of a catalyst which comprises a metal of Group VIII of the Periodic Table composited on a support comprising a carbonaceous pyropolymer possessing recurring units containing at least carbon and hydrogen atoms at a temperature in the range of from about 90° to about 150° C. and a pressure in the range of from about 500 to about 3000 psi to obtain polyols. In such a manner, glucose may be hydrogenated to sorbitol and mannitol.

대표청구항 ▼

1. A process for the hydrogenation of a saccharide which comprises treating said saccharide with hydrogen at hydrogenation conditions in the presence of a catalyst comprising a metal of Group VIII of the Periodic Table composited on a support comprising a carbonaceous pyropolymer possessing recurrin

1. A process for the hydrogenation of a saccharide which comprises treating said saccharide with hydrogen at hydrogenation conditions in the presence of a catalyst comprising a metal of Group VIII of the Periodic Table composited on a support comprising a carbonaceous pyropolymer possessing recurring units containing at least carbon and hydrogen atoms, and recovering the resultant hydrogenated saccharide. 2. The process as set forth in claim 1 in which said hydrogenation conditions included a temperature in the range of from about 90° to about 150° C. and a pressure in the range of from about 500 to about 3000 pounds per square inch. 3. The process as set forth in claim 1 in which said carbonaceous pyropolymer comprises an integral shaped replication of a particle aggregate. 4. The process as set forth in claim 1 in which said carbonaceous pyropolymer is composited on a high surface area inorganic oxide. 5. The process as set forth in claim 4 in which said high surface area inorganic oxide is an alumina. 6. The process as set forth in claim 5 in which said alumina is gamma-alumina. 7. The process as set forth in claim 1 in which said metal of Group VIII of the Periodic Table is ruthenium. 8. The process as set forth in claim 1 in which said metal of Group VIII of the Periodic Table is nickel. 9. The process as set forth in claim 1 in which said metal of Group VIII of the Periodic Table is platinum. 10. The process as set forth in claim 1 in which said metal of Group VIII of the Periodic Table is palladium. 11. The process as set forth in claim 1 in which said saccharide is glucose and said hydrogenated saccharide is sorbitol. 12. The process as set forth in claim 1 in which said saccharide is fructose and said hydrogenated saccharide is a mixture of sorbitol and mannitol. 13. The process as set forth in claim 1 in which said saccharide is mannose and said hydrogenated saccharide is mannitol.