Actions for Studies on the photochemical and thermal dissociation synthesis of krypton difluoride [electronic resource].

Email RIS file
Bookmark
Report an Issue

Studies on the photochemical and thermal dissociation synthesis of krypton difluoride [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
22 pages : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online

Availability

I Want It
I Want It

Finding items...

Restrictions on Access
Free-to-read Unrestricted online access
Summary
Like dioxygen difluoride (O₂F₂), KrF₂ can be produced by thermal dissociation or photochemical synthesis from the elements; however, the yields are invariably much less than those obtained for O₂F₂. For example, while irradiation of liquid O₂/F₂ mixtures at −196°C through a sapphire window with an unfiltered 1,000W uv lamp provides in excess of 3g of O₂F₂ per hour, the yield of KrF₂ under identical circumstances is approximately 125 mg/hr. In this report, the yield of KrF₂ in quartz and Pyrex{trademark} photochemical reactors has been examined as a function of irradiation wavelength, irradiation power, and Kr: F₂ mole ratio. The uv-visible spectrum of KrF₂ has also been recorded for comparison with earlier work, and the quantum yield for photodissociation at two wavelengths determined. The synthesis of KrF₂ using large thermal gradients has also been examined using resistively heated nickel filaments to thermally dissociate the F₂ in close proximity to liquid nitrogen-cooled metal surfaces. As a net result, KrF₂ has been produced in yields in excess of 1.75 g/hr for extended periods in photochemical systems, and 2.3 g/hr for shorter periods in thermally dissociative reactors. This paper summarizes the results of examining parametrically several different types of reactors for efficiency of producing krypton difluoride.
Report Numbers
E 1.99:la-ur--93-2560
E 1.99: conf-920444--40
conf-920444--40
la-ur--93-2560
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
08/01/1993.
"la-ur--93-2560"
" conf-920444--40"
"DE93018555"
203. American Chemical Society (ACS) national meeting,San Francisco, CA (United States),5-10 Apr 1992.
FitzPatrick, J.R.; Purson, J.D.; Foropoulos, J. Jr.; Kinkead, S.A.; Kissane, R.J.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14394706