𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Autocatalytic oxidation of β-alanine by peroxomonosulfate in the presence of copper(II) ion

✍ Scribed by R. Sayee Kannan; D. Easwaramoorthy; K. Vijaya; M. S. Ramachandran

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
192 KB
Volume
40
Category
Article
ISSN
0538-8066

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Kinetics and mechanism of oxidation of β‐alanine by peroxomonosulfate (PMS) in the presence of Cu(II) ion at pH 4.2 (acetic acid/sodium acetate) has been studied. Autocatalysis was observed only in the presence of copper(II) ion, and this was explained due to the formation of hydroperoxide intermediate. The rate constant for the catalyzed (k) and uncatalyzed (k) reaction has been calculated. The kinetic data obtained reveal that both the reactions are first order with respect to [PMS]. k values initially increase with the increase in [β‐alanine] and reach a limiting value, but k values decrease with the increase in [β‐alanine]. k values increase linearly with the increase in [Cu(II)], whereas k values increase with [Cu(II)]^2^. Furthermore, k values are independent of [acetate], but k values decrease with the increase in acetate. A suitable mechanism has been proposed to explain the experimental observation. The reaction has been studied at different temperatures, and the activation parameters are calculated. © 2007 Wiley Periodicals, Inc. Int J Chem Kinet 40: 44–49, 2008

📜 SIMILAR VOLUMES

Oxidation and chemiluminescence of catec
Oxidation and chemiluminescence of catechol by hydrogen peroxide in the presence of Co(II) ions and CTAB micelles
✍ Jan Lasovsky; Jan Hrbac; Dana Sichertova; Petr Bednar 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 283 KB 👁 2 views

## Abstract The oxidation of catechol in neutral and slightly alkaline aqueous solutions (pH 7–9.6) by excess hydrogen peroxide (0.002–0.09 mol/L) in the presence of Co(II) (2.10^−7^–2.10^−5^ mol/L) is accompanied by abrupt formation of red purple colouration, which is subsequently decolourized wit

Removal of Mn(II) ions from aqueous neut
Removal of Mn(II) ions from aqueous neutral media by manganese-oxidizing fungus in the presence of carbon fiber
✍ Keiko Sasaki; Hidetaka Konno; Mai Endo; Keishi Takano 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 766 KB

## Abstract A manganese‐oxidizing fungus was isolated from a hot spring in Japan. The fungus was increasingly effective at oxidizing Mn(II) ions as the concentration of organic carbon sources in the growth medium was decreased. The fungus oxidized 50 ppm of Mn(II) ions within 160 h in a pH 7.3 medi