Process for the hydrogenation of sugars

Details Process for the hydrogenation of sugars Process for the hydrogenation of sugars

1998-01-15

2000-09-26

Wilson, James O.

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

Organic compounds

Carbohydrates or derivatives

536 41, 536 186, 536124, 536125, 568861, 568862, 568863, C07G 300

Patent

active

061244430

ABSTRACT:
Epimer-free sugar alcohols can be prepared from the corresponding sugars by catalytic hydrogenation with hydrogen in aqueous solution, the hydrogenation being carried out continuously at a hydrogen pressure of 100 to 400 bar and a reaction temperature of 20 to 70.degree. C. on support-free shaped bodies which are arranged in a fixed bed and are made of pressed powders of metals or alloys of the elements of the iron subgroup of subgroup VIII of the Periodic Table of the Elements together with elements of subgroup IV and/or V. The shaped bodies have a compressive strength of 20 to 220 N and an internal surface area of 10 to 100 m.sup.2 /g.

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Wolfrom et al., "Crystalline Lactositol", Crystalline Lactositol, Mar., 1938 pp. 571-573.
Nelsen et al., "Determination of Surface Area: Adsorption Measurements by a Continuous Flow Method", Analyst. Chem., vol. 30, No. 8, Aug. 1958, pp. 1387-1390.

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