Flow reactor studies of the paired electro-oxidation and electroreduction of glucose

Journal Article · Thu Aug 01 04:00:00 EDT 1985 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2114229· OSTI ID:5032968

Park, K; Baizer, M M; Nobe, K; Pintauro,

The electrochemical oxidation of glucose to gluconic acid and reduction of glucose to sorbitol hav been paired in an undivided packed-bed electrode flow reactor. A Raney Ni powder electrocatalyst significantly improved the current efficiency for sorbitol production, as compared to a high hydrogen overpotential Zn(Hg) cathode. The optimum operating conditions for the paired syntheses are activity W-2 Raney Ni powder cathode, graphite chip anode, a 1.6M glucose and 0.4M CaBr/sub 2/ initial solution composition, pH 5-7, 60/sup 0/C solution temperature, an applied current of 250-500 mA per 10g of nickel powder cathode and a solution volumetric flow rate of 100 ml-min/sup -1/. Under these conditions, the sorbitol current efficiencies are 80-100%, the gluconic acid efficiencies are 100%, and the product yields are very high.

• Research Organization: Department of Chemical Engineering, University of California, Los Angeles, California
• OSTI ID: 5032968
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 132:8; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALDEHYDES
ALKALINE EARTH METAL COMPOUNDS
ANODES
BROMIDES
BROMINE COMPOUNDS
CALCIUM BROMIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBOHYDRATES
CARBON
CARBOXYLIC ACIDS
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CATHODES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHEMISTRY
CURRENTS
DIURETICS
DRUGS
ELECTRIC CURRENTS
ELECTROCATALYSTS
ELECTROCHEMISTRY
ELECTRODES
ELEMENTAL MINERALS
ELEMENTS
FLOW RATE
FLUID MECHANICS
GLUCONIC ACID
GLUCOSE
GRAPHITE
HALIDES
HALOGEN COMPOUNDS
HEXOSES
HYDRAULICS
HYDROXY ACIDS
MECHANICS
METALS
MINERALS
MONOSACCHARIDES
NICKEL
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PACKED BED
PRODUCTION
REDUCTION
SACCHARIDES
SORBITOL
TRANSITION ELEMENTS
YIELDS
ZINC