Accession Number:

AD0276955

Title:

COMBUSTION OF ELEMENTAL BORON

Descriptive Note:

Quarterly summary rept., Feb-Apr 1962

Corporate Author:

TEXACO EXPERIMENT INC RICHMOND VA

Report Date:

1962-05-01

Pagination or Media Count:

18.0

Abstract:

Studies of the reaction between elemental boron and fluorine gas continued in both the low-pressure microbalance apparatus and in the time-of-flight mass spectrometer. Corrosive failure of the mass-spectrometer apparatus prevented obtaining the refined data hoped for in the 800 to 1600 deg K temperature range, although the data available do indicate that at these temperatures BF was the principal species formed on the surface AND THAT THE REACTION APPARENTLY CHANGED TO A LOWER ACTIVATION ENERGY MECHANISM WHEN THE TEMPERATURE WAS RAISED TO ABOUT 800 deg K. Rates obtained in the 525 to 630 deg K range in the microbalance apparatus gave an activation energy of about 19 kcalmole, which suggests that the ratecontrolling step in this region might be the dissociation of fluorine as it is adsorbed on the surface.

Subject Categories:

  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE