SOF/sub 4/ production in spark breakdown of SF/sub 6//O/sub 2/ mixtures
Data are reported on the production of thionyl-tetrafluoride (SOF/sub 4/) after spark discharges in SF/sub 6//O/sub 2/ mixtures for added oxygen contents of 0, 1, 2, 5, 10, and 20%. All measurements were made for fixed total pressure, P = 133 kPa (1,000 Torr) and for spark energy of 8.7 J per spark. The SOF/sub 4/ by-product increases with increasing O/sub 2/ content and becomes the most abundant oxyfluoride decomposition product when (O/sub 2/) > 11%. The net yields for SOF/sub 4/ formation range from 0.18 x 10/sup -9/ mol . J/sup -1/ at 1% O/sub 2/ content to 10.45 x 10/sup -9/ mol . J/sup -1/ at 20% O/sub 2/ content. The mechanism for SOF/sub 4/ production appears to involve the reaction of SF/sub 4/, an important initial product of SF/sub 6/ discharges, with atomic oxygen. A simple model which includes a fluorine depletion reaction resulting from oxygen addition gives good agreement with the SOF/sub 4/ yield dependence on oxygen content. Comparison of the SOF/sub 4/ spark yield with other discharges (arc and corona) is also made.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6541563
- Report Number(s):
- CONF-870516-8; ON: DE87009685
- Country of Publication:
- United States
- Language:
- English
Similar Records
Influence of O{sub 2} and H{sub 2}O on the spark decomposition of SF{sub 6} and SF{sub 6} + 50% CF{sub 4} mixtures
Identification of corona discharge-induced SF/sub 6/ oxidation mechanisms using SF/sub 6///sup 18/O/sub 2//H/sub 2/ /sup 16/O and SF/sub 6///sup 16/O/sub 2//H/sub 2/ /sup 18/O gas mixtures
Related Subjects
400201* -- Chemical & Physicochemical Properties
ATOMS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
DECOMPOSITION
ELECTRIC DISCHARGES
ELECTRIC SPARKS
ELEMENTS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
NONMETALS
OXYGEN
SULFUR COMPOUNDS
SULFUR FLUORIDES
YIELDS