NDLI: Multibubble sonolysis and sonoluminescence in molten elementary sulfur and sulfur

Content Provider	Springer Nature Link
Author	Sharipov, G. L. Akhmetova, V. R. Rusakov, I. V. Abdrakhmav, A. M. Zagretdiva, L. R. Sadykov, R. A. Lebedev, Yu. A.
Copyright Year	2010
Abstract	The effect of saturation with argon, as well as styrene and iodine additives on the temperature dependence of multibubble sonoluminescence intensity in molten sulfur at 120–230 °C was studied. The shape of the temperature dependence with a maximum at 170–200 °C is determined by the viscosity variations related to the changes in the molecular structure of molten elemental sulfur. At high temperatures, cyclooctasulfane (S$_{8}$) molecules break to radical products, which then undergo polymerization that can be slowed down by the additives. Sulfurization of styrene during sonolysis of a sulfur—styrene mixture resulting in products of the thiophene series was detected. Unlike thermal sulfurization that affords 2,5-diphenylthiophene as a major product, sonochemical sulfurization results mainly in 2,4-diphenylthiophene. The mechanism of 2,4-diphenylthiophene formation initiated by the reaction of styrene molecules with S$^{+}$ ions produced upon fragmentation of S$_{8}$ within cavitation bubbles is proposed. The glow of electronically excited S$^{+}$* ions is responsible for the band with a maximum at 560 nm in the sonoluminescence spectrum of molten sulfur, which is suppressed by the styrene additive.
Starting Page	917
Ending Page	921
Page Count	5
File Format	PDF
ISSN	10665285
Journal	Russian Chemical Bulletin
Volume Number	59
Issue Number	5
e-ISSN	15739171
Language	English
Publisher	Springer US
Publisher Date	2010-11-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	sonolysis sonochemical reactions multibubble sonoluminescence sulfurization elemental sulfur styrene synthesis of thiophenes Inorganic Chemistry Organic Chemistry Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Chemistry

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