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

doi:10.1021/jp070635l

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 journal › Article › Academic › peer-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 language	English
Pages (from-to)	3081-3084
Journal	Journal of Physical Chemistry B
Volume	111
Issue number	12
DOIs	https://doi.org/10.1021/jp070635l
Publication status	Published - 2007

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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.",

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AB - 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.

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