Copper-catalyzed oxidation of ascorbic acid in gels and aqueous solutions of polysorbate 80
β Scribed by Rolland I. Poust; John L. Colaizzi
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- English
- Weight
- 659 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0022-3549
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Ascorbic acid at a concentration of 10^β3^ M was a more effective proβoxidant in the presence of low copper concentrations than at high concentrations, particularly in the initial stages of oxidation or in the lower pH range (5Β·5β4Β·7). This suggested a much more complex role for ascorbi
Veszprem, Hungary Β΄Ε½ . Enthalpies of solution for L-ascorbic acid q water have been measured in a SETARAM C80 D mixing calorimeter over the composition range of homogeneous solutions at temperatures of 298.15 K and 323.15 K. The results are reported in terms of excess molar ΓΕ½ Ε½ . 4 enthalpies for x
## Abstract The copperβcatalyzed oxidation of ascorbic acid (AscH~2~) has been studied with a __Clark__ electrode in aqueous MeCN. Cu^I^ or Cu^II^ may be equally used as the source of metal ion, without influence on the rate law. At sufficiently high [MeCN], the rate of the overall reaction is esse
The oxidative coupling reaction of 2,6dimethylphenol (DMP) with H 2 O 2 catalyzed by four copper(II) complexes was investigated in Tris-HNO 3 buffer solution at 25 C. The kinetics of formation of diphenoquinone (DPQ, 4-(3,5-dimethyl-4-oxo-2,5-cyclohexadienylidene)-2,6-dimethyl-2,5-cyclohexadienone)