Gluconic acid current processes

When a stable baseline is reached, transfer an appropriate aliquot of the gluconic acid stock solution into the electrochemical cell, and measure the current until the steady-state current is reached. Repeat this process as many times as necessary. 

Currently, adiponitrile is the only organic chemical produced in large quantity (108 kg/yr) by an electrochemical route. Other smaller-scale products include gluconic acid, piperidine, and p-aminophenol. Electroorganic syntheses in supercritical organic electrolytes have been demonstrated in bench-scale reactors. Production of dimethyl carbonate from the mixture-critical region was performed. There are at least a dozen electroorganic processes that are... 

A variation of the bromine oxidation process which seems to be particularly feasible for the commercial production of aldonic acids involves the electrolysis between carbon electrodes of solutions containing sugars, small amounts of bromides, and a buffer such as calcium carbonate 179), Presumably the reaction takes place by the formation of free bromine at the anode the bromine oxidizes the aldose to the aldonic acid and is reduced to bromide. Yields are almost theoretical in many cases. If the electrolytic method is not well controlled, saccharic acids and 2-keto and 5-keto aldonic acids may be produced 180), Whereas the normal electrolytic oxidation is conducted with direct current, a yield of 55 % of gluconic acid has been obtained with alternating current 181) and platinum electrodes a very low efficiency was observed with graphite electrodes. 

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