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  • Reakcije v nizkotemperaturni plazmi : magistrsko delo podiplomskega študija
    Klampfer, Peter
    Gases SF6, CF3SF5 and CISF5 decompose in a radio-frequency discharge. By the use of a mass spectrometry, the decomposition degree of these gases in a modified reference radio-frequency plasma cell ... was estimated. At a radio-frequency power of 25W, 50 to 65% of gas SF6 decompose in a plasma whereas roughly half of the CF3SF3 and CISF5 decompose at the same conditions. Sulfur fluorides SF6, CISF5 and CF3SF5 were reacted with C6H6, C6H5BR and C6H5CL in a low temperature radio-frequency plasma in a quartz bell jar chamber and in the stainless steel reactor. Reaction of sulfur fluorides with the quartz wall took place in a quartz apparatus giving SiF4, SOF4 and SO2F4. Because of a stepwise dissociation of sulfur fluorides, the fluorination of benzenes was observed. Where C6H5Br or C6H5Cl were reactants, numerous halogenated bezenes appeared in reaction products C6H5SF5 was found in minor quantities, and BrC6H5SF5 or ClC6H5SF5 were found when C6H5Br or C6H5Cl were used as reactants, respectively. The concentration of C6H5SF5 in reaction products proved to depend on reagents used and on flow rates of reactants, no attempt has been done to improve the yield of C6H5SF5 by wide variation of experimental conditions. However, it is very likely for the yield to increase dramatically by the use of S2F10, the most clean source of SF5 radicals, which was avoided in present study due to its extremely high toxicity.
    Vrsta gradiva - magistrsko delo
    Založništvo in izdelava - Maribor : [P. Klampfer], 2000
    Jezik - slovenski
    COBISS.SI-ID - 5283606

Knjižnica/institucija Kraj Akronim Za izposojo Druga zaloga
Knjižnica tehniških fakultet, Maribor Maribor KTFMB v čitalnico 1 izv.
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