Oxidation of glucose with platinum on carbon as catalyst
Glucose reacts very fast with chemisorbed oxygen (Pt-O) in a weakly alkaline medium to yield gluconic acid, while in an oxygen-containing atmosphere a side reaction occurs, resulting in the formation of appreciable amounts of uronic acids. Most probably, this side reaction involves molecular oxygen, resulting in the oxidation of both the primary alcohol group and the aldehyde group of glucose. In the course of an experiment a strong catalyst deactivation takes place, which can be reversed by temporarily replacing the oxygen flow by a nitrogen flow. The deactivation of the catalyst is ascribed to the formation of platinum oxide (PtO/sub 2/). The formation of PtO/sub 2/ and the oxidation of glucose are chemically coupled. The reactivation of the catalyst in the absence of oxygen is a reduction reaction between PtO/sub 2/ and adsorbed glucose.
- Research Organization:
- Univ. of Technology, Eindhoven, Netherlands
- OSTI ID:
- 6572729
- Journal Information:
- J. Catal.; (United States), Vol. 67:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
GLUCONIC ACID
CHEMICAL PREPARATION
GLUCOSE
OXIDATION
CARBON
CATALYSIS
CATALYSTS
PLATINUM
PLATINUM OXIDES
ALDEHYDES
CARBOHYDRATES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
HEXOSES
HYDROXY ACIDS
METALS
MONOSACCHARIDES
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM COMPOUNDS
PLATINUM METALS
SACCHARIDES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)