Pressure-induced reduction of shielding for improving sonochemical activity

M.M. Iersel, van, J.P.A.J. Manacker, van den, N.E. Benes, J.T.F. Keurentjes

    Research output: Contribution to journalArticleAcademicpeer-review

    7 Citations (Scopus)

    Abstract

    The effect of hydrostatic pressure on chem. reactions induced by 20 kHz ultrasound has been studied using three different methods: the oxidn. of potassium iodide, bubble cloud visualization studies, and sound attenuation measurements. The latter two have demonstrated that shielding of the ultrasonic wave is less pronounced at elevated pressures. Accordingly, the yield of iodine liberation increases with increasing pressure. At high static pressures, however, the less efficient cavitation dynamics dominate and the chem. reactivity decreases rapidly.
    Original languageEnglish
    Pages (from-to)3081-3084
    JournalJournal of Physical Chemistry B
    Volume111
    Issue number12
    DOIs
    Publication statusPublished - 2007

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