International Scholarly Research Notices / 2013 / Article / Tab 4

Research Article

Oxidative Cleavage of β-Lactam Ring of Cephalosporins with Chloramine-T in Alkaline Medium: A Kinetic, Mechanistic, and Reactivity Study

Table 4

Effect of varying temperature on the rate of reaction and activation parameters for the oxidation of cephalosporins by CAT in alkaline medium.

Temperature (K)104 (s−1)
CEXCFLCPD

2911.102.824.79
2961.614.166.46
3012.315.159.84
3063.807.9014.5
(kJ mol−1)61.353.646.7
(kJ mol−1)58.851.244.3
(kJ mol−1)94.392.290.8
(JK−1 mol−1)−119−137−156
Log  11.310.49.4

Experimental conditions: [CAT]o = 2.0 × 10−4 mol dm−3; [Substrate]o = 1.0 × 10−3 mol dm−3; and [NaOH] = 4.4 × 10−3 mol dm−3.

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