氨基羧酸铁(III)配合物催化分解过氧化氢

Mechanism of decomposition of hydrogen peroxide catalysed by aminocarboxylatoiron(III) complexes

用碘量法研究了[FeIII(EDTA] 、[FeIII(DCTA)] 、[FeIII(EGTA)] 催化分解H2O2反应,提出了反应动力学方程为-d[H2O2]/dt=k[FE(III)][H2O2][H+] 1,认为氨基羧酸铁(III)配合物催化分解H2O2反应为键式自由基反应,反应中间体包括过氧铁(III)配合物、氨基羧酸铁(II)和HO·、HO2·自由基。

The decomposition of H2O2 catalyzed by -?- and - is studied by iodimetry.The kinetic equation of reaction is obtained as -d/dt=k-1.It was suggested that decomposition of H2O2 catalysed by aminocarboxylatoiron(III) complexes is belong to a radical chain reaction,intermediates include peroxyiron(III) complex,aminocarboxylatoiron(II) and radicals HO·?HO2·.