Abstract
Abstract The mechanochemical decomposition of dipotassium peroxodisulfate by dry grinding was investigated by X-ray diffractometry, infrared spectrophotometry, electron spin resonance (ESR) spectrometry, and thermal and volumetric analyses. When dipotassium peroxodisulfate (K2S2O8) was ground, type I of K2S2O8 was transformed into type II and then into type III. With prolonged grinding, the O–O linkage in K2S2O8 was severed to produce KSO4· radicals, which reacted with a little moisture to give KHSO4.
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