锌催化过氧化氢氧化铬黑T动力学参数测定

Kinetic parameter determination for hydrogen peroxide catalyscal oxidation of eriochrome black T by zinc

研究了在酸性介质中 ,Zn2 + 对H2 O2 氧化铬黑T褪色反应的催化作用 ,以及在一定条件下反应的动力学性质 ,测定了反应的表观活化能为 1 1 5 1kJ·mol-1 ,比非催化反应降低了 2 4 6 % ,反应速率常数为 4 1 5× 1 0 -3 S-1 。

In acidic sulution, the H 2O 2 catalyscal Oxidation of EBT by Znic, results in the result of decolouration. The apparent acitivation energy and the rate constant of the reaction were determined. They were 115. 1 kJ·mol -1 and 4.15×10 -3 S -1 . The result applies to the new method for the determination of trace zinc.