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The influence of ultrasonic waves on the viscosity and stability of vanadium pentoxide sol

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Summary

The vanadium pentoxide sol when exposed to ultrasonic waves shows an increased value of hydrogen ion concentration and conductivity. It is postulated that this change is due to either supersaturation of metavanadic acid in presence of the high frequency waves or to the production of peroxyvanadic acid under the influence of hydrogen peroxide which is known to be formed in traces under these conditions. The change in viscosity of vanadium pentoxide sol in presence of electrolytes under the influence of ultrasonic waves has also been recorded.

Zusammenfassung

Das Vanadium-Pentoxyd-Sol zeigt, wenn Ultraschall ausgesetzt, einen steigenden Wert an Wasserstoffionen-Konzentration und LeitfÄhigkeit. Es wird festgestellt, da\ diese VerÄnderung entweder einer übersÄttigung an Meta-VanadinsÄure in Gegenwart der Ultraschallwellen oder der Erzeugung von Peroxyd-VanadinsÄure unter Einflu\ von Wasserstoffsuperoxyd zuzuschreiben ist. Wasserstoffsuperoxyd wird bekanntlich unter diesen Bedingungen in Spuren gebildet. über die Änderung der ViskositÄt des fraglichen Sols in Gegenwart von Elektrolyten unter gleichzeitigem Einflu\ von Ultraschall wird ebenfalls berichtet.

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Prakash, S., Pandey, A.D. The influence of ultrasonic waves on the viscosity and stability of vanadium pentoxide sol. Kolloid-Zeitschrift 167, 39–41 (1959). https://doi.org/10.1007/BF01810120

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  • DOI: https://doi.org/10.1007/BF01810120

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