M. Najafpour, W. Hillier, M. Lashgari, Davoud Matloubi
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Oxygen Production of Peroxomonosulphate Induced by Cobalt(II)
The oxygen production reaction between Co(II) and Oxone (2KHSO 5 ·KHSO 4 ·K 2 SO 4 ) at pH = 4.5 was studied. Oxygen production was seen to be a first order reaction in the presence of Co(II) and Oxone but the overall reaction order is second order. T he analysis of the result revealed Co(III) and sulphate radical as proposal intermediates in oxygen production reaction. The reaction was studied at five different temperatures and kinetic and activation parameters were determined and a mechanism for oxygen production was proposed. To determine to what extent water was the source of the evolved oxygen, H 2 18 O isotope-labelling experiments coupled with membrane inlet mass spectrometry (MIMS) were carried out
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