Surface Raman scattering from effervescent magnetic peroxyborates

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Abstract
Surface Raman scattering using a spinning technique was investigated for solid NaBO3⋅4H2O and NaBO3⋅H2O, as well as for electron bombarded peroxyborates, for peroxyborates heated for various times and at temperatures for 110–180 °C, and for solid Na2O2 and BaO2. The Raman spectra indicate that the breakdown of peroxy groups is accompanied by the formation of trapped molecular O2. Quantitative Raman intensity data were also obtained as functions of heating time at 115 °C for the 1556 cm−1 line from O2 and for the 890 and 705 cm−1 lines whose intensities scale with the peroxy concentration. These intensity data were treated by logistics theory, and they were found to be consistent with a second-order autocatalyzed forward reaction dependent on the product of the peroxy and O2 concentrations, plus a first-order reverse reaction dependent only on the O2 concentration.

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