Sonochemie: Bildung von C3S2 neben Sx (x = 6, 7, 8) durch Einwirkung von Ultraschall auf CS2

Quellhorst, Heike; Binnewies, Michael

doi:10.1002/zaac.19966220210

Cited by 6 publications

(2 citation statements)

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“…16 Detectable amounts of C 3 S 2, S 6 , S 7 , and S 8 have been found in pure liquid CS 2 subjected to ultrasound of 20-kHz frequency. 17 High pressures are achieved in ultrasound experiments by the collapse of cavitation bubbles produced by the sound waves. Similar observations of C 3 S 2 have been made by Cataldo and Heymann.…”

Section: Discussionmentioning

confidence: 99%

Mass Spectroscopic Observation of Shock-Induced Chemistry in Liquid CS₂

2007

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We have observed, via time-of-flight mass spectrometry, 13 chemical species more massive than CS2 produced by shocking liquid CS2 to very high pressure/temperature. The stoichiometry of three of these species is uniquely determined from the 12CS2 experiments; these species are C2S2, C3S2, and C4S2. The stoichiometry of the other 10 structures cannot be uniquely determined from 12CS2 experiments. However, by redoing the experiments using isotopically labeled CS2 (i.e., 13CS2), we determined the stoichiometry of nine of the remaining structures. The nine structures are Sn (n = 3-8) and CS3, C2S5, and C4S6. A structure with mass 297.1 amu was also observed in the 12CS2 experiments but was not detected in the 13CS2 experiments. This structure must be C6S7, C14S4, or C22S; given the low carbon content of the other observed carbon species, it is probably C6S7. The shockwaves to which the CS2 molecules were subjected were produced by the detonation of high mass-density solid explosives. The explosives used were either a plastic bonded form of cyclotetramethlylene tetranitramine or pure hexanitrostilbene. Numerical compressible fluid-mechanical simulations were done to estimate the pressures, temperatures, and time scales of the processes that occurred in the shocked CS2. The results obtained in the present experiments are related to earlier work on CS2's chemical reactivity that used both shockwave methods and static techniques to produce very high pressure.

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Section: Discussionmentioning

confidence: 99%

Mass Spectroscopic Observation of Shock-Induced Chemistry in Liquid CS₂

2007

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“…Im Rahmen von Untersuchungen zum Einfluû von Ultraschall auf molekulare anorganisch-chemische Systeme [1] haben wir nun sonochemische Untersuchungen an Siloxanen durchgefu È hrt. Diese Stoffklasse ± insbesondere hochmolekulare Chlorsiloxane ± bearbeiten wir seit einiger Zeit wegen ihrer Rolle als Bindeglied zwischen Moleku È len und Feststoffen [2±4]; zu ihr fu È hren verschiedene pra È parative Wege [4±9], von denen einige unter Energiezufuhr auf niedermolekulare Siloxane verlaufen.…”

Section: Introductionunclassified