VANADATE CATALYZED OXIDATION OF 5-KETO-D-GLUCONIC ACID TO TARTARIC ACID - THE UNEXPECTED EFFECT OF PHOSPHATE AND CARBONATE ON RATE AND SELECTIVITY

Authors
MATZERATH I KLAUI W KLASEN R SAHM H
Citation
I. Matzerath et al., VANADATE CATALYZED OXIDATION OF 5-KETO-D-GLUCONIC ACID TO TARTARIC ACID - THE UNEXPECTED EFFECT OF PHOSPHATE AND CARBONATE ON RATE AND SELECTIVITY, Inorganica Chimica Acta, 237(1-2), 1995, pp. 203-205
Citations number
17
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Inorganica Chimica Acta → ACNP
ISSN journal
00201693
Volume
237
Issue
1-2
Year of publication
1995
Pages
203 - 205
Database
ISI
SICI code
0020-1693(1995)237:1-2<203:VCOO5A>2.0.ZU;2-I
Abstract
The vanadium(V) catalysed oxidation of 5-ketogluconic acid by air occu rs readily only in neutral or alkaline solution. In the presence of ph osphate the oxidation takes place in acidic media as well. In alkaline berate buffer the oxidation is completely blocked. In alkaline carbon ate buffer the oxidation is fast and yields tartaric acid with much hi gher selectivity than in alkaline phosphate buffer solutions of the sa me pH.