Jin-huan SHAN, Shu-ying HUO, Shi-gang SHEN, Han-wen SUN

7197

Kinetics and Mechanism of Oxidation of 1,3--Butylene Glycol by Dihydroxyditellutoargentate(III) in Alkaline Medium

The kinetics of oxidation of 1,3--butlene glycol (b - BG) by dihydroxyditelluto- argentate(III) were studied spectrophotometrically between 298.2 and 313.2 K in alkaline medium. The reaction rate showed pseudo-first order dependence in oxidant and fractional order in \ss-BG. The pseudo-first order rate constant kobs increased with an increase in the concentration of OH- and a decrease in the concentration of TeO42- . There was a negative salt effect and no free radicals were detected. Thus, the dihydroxymonotelluratoargentate(III) species is assumed to be the active species. The activation parameters along with the rate constants of the rate-determining step were calculated.
Anahtar Kelimeler:

Dihydroxyditellutoargentate(III), 1, 3--Butylene glycol, Redox reaction, Kinetics and mechanism

Kinetics and Mechanism of Oxidation of 1,3--Butylene Glycol by Dihydroxyditellutoargentate(III) in Alkaline Medium

The kinetics of oxidation of 1,3--butlene glycol (b - BG) by dihydroxyditelluto- argentate(III) were studied spectrophotometrically between 298.2 and 313.2 K in alkaline medium. The reaction rate showed pseudo-first order dependence in oxidant and fractional order in \ss-BG. The pseudo-first order rate constant kobs increased with an increase in the concentration of OH- and a decrease in the concentration of TeO42- . There was a negative salt effect and no free radicals were detected. Thus, the dihydroxymonotelluratoargentate(III) species is assumed to be the active species. The activation parameters along with the rate constants of the rate-determining step were calculated.
Keywords:

Dihydroxyditellutoargentate(III), 1, 3--Butylene glycol, Redox reaction, Kinetics and mechanism,

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Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: 6
  • Yayıncı: TÜBİTAK
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