Abstract
Abstract Both a batch and a continuous-flow reactor system were investigated in the oxidation reaction of glucosamine hydrochloride (GlcN-HCl) into glucosaminic acid (GlcNA). In the batch reactor system, AuPd-supported catalysts using basic supports such as MgO and hydrotalcite (HT) effectively catalyzed the target oxidation reaction. Although in the liquid-flow reaction system, these catalysts showed a gradual decrease in their activity due to exposure to the acidic nature of the GlcN-HCl product, the addition of NaOH to maintain the basic reaction condition allowed the yield to remain stable over a longer reaction time; approx. 80% yield for 9 h reaction in both AuPd/MgO and AuPd/HT cases.
Published Version
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