Oxygen → Gluconic Acid

Temperature

50 °C

1200 g of an aqueous solution of 360 g (2 mol) of glucose (HI MESH; a product of Aito Co., Ltd.) and 5.4 g (1.5 wt. % based on glucose) of the catalyst prepared as above were placed in a 2.5 l reaction vessel provided with a stirrer, thermometer, alkali dropping funnel, pH electrodes and oxygen inlet. Oxygen gas was introduced into the aqueous solution under vigorous stirring while the temperature was maintained at 50±1° C. As the reaction proceeded, gluconic acid was formed. Gluconic acid was neutralized with a 40 wt. % aqueous sodium hydroxide solution added dropwise thereto so as to maintain the pH of the aqueous solution at 9.5±0.2. 1.0 h after the initiation of the reaction, a theoretical amount (2 mol) of the alkali was consumed. Thereafter, no more alkali was consumed and the reaction no more proceeded. Thus, the completion of the reaction was evident.

1. custom) and 5.4 g (1.5 wt. % based on glucose) of the catalyst prepared
2. customas above were placed in a 2.5 l reaction vessel
3. customprovided with a stirrer

ORD record

ord-886f8dd5310c459089864bc3c2a749d2

Source dataset

uspto-grants-1989_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04843173