Study of the Bray-Liebhafsky reaction by on-line mass spectrometry

The experimental study of iodate-catalyzed disproportionation of aqueous hydrogen peroxide, called the Bray-Liebhafsky oscillating reaction (BLR), was performed by using membrane introduction mass spectrometry (MIMS). The sequence of species O-2, HIO2, HIO, and I-2, which appear during the oscillation, was observed for the first time. The influence of ambient atmosphere, stirring rate, and temperature on the BLR was investigated. The contribution of gained results to the published models is discussed.