Accession Number : AD0705138

Title :   PROMOTERS AND MECHANISMS OF SULFUR HEXAFLUORIDE OXIDATION REACTIONS,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Siegel,Bernard ; Breisacher,Peter

Report Date : 01 DEC 1969

Pagination or Media Count : 23

Abstract : Various gases can increase the rate of SF6 oxidation. The efficacies of these promoters were shown to be inversely proportional to their electronegativities, demonstrating that the unusual slowness of SF6-oxygen reactions is caused by the ability of the fluorines in SF6 to repel the highly electronegative oxygen. Although SOF4 is the principal sulfur oxyfluoride product of SF6-oxygen reactions, the presence of each of the promoters leads to a shift in products, primarily to SOF2 formation. However, SO2 formation is enhanced by the presence of relatively low hydrogen concentrations, and the level of SO2F2 formation is strongly influenced by the identity and concentration of the various promoters. These data are used to deduce detailed reaction mechanisms that are consistent with the observed products and thermochemical energetics. (Author)

Descriptors :   (*SULFUR COMPOUNDS, *OXIDATION), FLUORIDES, OXYGEN, PLATINUM, CATALYSTS

Subject Categories : Inorganic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE