Kinetics and mechanism of oxidation of D-galactose by quinolinium chlorochromate (QCC) in aqueous acetic acid medium

• Autorzy: Singh J. V. , Mishra K. , Pandey A.
• Języki publikacji: EN

Abstrakty

EN

The oxidation kinetics of D-galactose with quinolinium chlorochromate, C(9)H(7)NHCrO(3)Cl, has been studied in aqueous acetic acid medium 50% (v/v) in the presence of perchloric acid at constant ionic strength. The reaction under pseudo-first order condition, is first order with respect to both the [oxidant] and the [substrate]. The reaction is markedly catalysed by [H+] and the effect of [NaClO(4)] is negligible. Increasing the dielectric constant of medium decreases the reaction rate. A 1 : 1 stoichiometry is observed and the reaction did not induce the polymerisation of acrylonitrile. The reaction has been carried out at different temperatures and the various activation parameters have been computed. A probable mechanism of the reaction is suggested.

Słowa kluczowe

EN

quinolinium chlorochromate; galactose; oxidation; hydride ion transfer

PL

QCC; galaktoza; utlenianie; przeniesienie jonu wodorkowego

• Wydawca: Centrum Upowszechniania Nauki PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Chemistry
• Rocznik: 2003
• Tom: Vol. 51, No. 1
• Strony: 35--43
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Singh J. V.

autor

Mishra K.

autor

Pandey A.

• Department of Chemistry, Dr. H.S. Gour Vishwavidyalaya, Sagar 470 003 (M.P.) India