RADIATION-INDUCED GAS-GRAPHITE REACTIONS IN SEALED CAPSULES. PART II. HYDROGEN, METHANE, CARBON MONOXIDE AND NITROGEN

Technical Report · Mon Jan 20 04:00:00 EST 1964

OSTI ID:4085641

Ryan, B A

Irradiations of several gases at various pressures in sealed quartz capsules, some containing graphite, were conducted either in a Hanford reactor at about 550 deg C or in a Co/sup 60/ facility at about 30 deg C. Changes in gas composition and graphite weight were measured, and the nature of the deposited material was investigated. There was no measurable formation of CH/sub 4/ in capsules containing graphite and H/sub 2/ in the pressure range from 3 to 30 atm. However, the results of these experiments were not quantitative because of the loss of H/sub 2/ from the permeable quartz capsules. The radiation-induced decomposition of CH/sub 4/ a form H/sub 2/ and carbon was measured in capsules filled with H/sub 2/--CH/sub 4/ mixtures. In some of the capsules with this mixture, trace amounts of C/sub 2/H/sub 6/ and C/sub 3/H/sub 8/ were formed. Gamma irradiations of H/sub 2/-CH/sub 4/ mixtures to a total dose of 9.88 x 10/ sup 8/ r produced very small changes in the gas composition. In capsules containing H/sub 2/ -- CO mixtures at total pressures ranging from 1 to 25 atm, the yield ( approximates 40 per cent) of CH/sub 4/ and CO/sub 2/ was good for the high exposure in these experiments. In only one of the four capsules filled with N/sub 2/ was any C/sub 2/N/sub 2/ detected in the gas phase; however, small amounts of a solid, believed to be paracyanogen, were found on the walls of the four capsules. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: AT(45-1)-1350
• NSA Number: NSA-18-013835
• OSTI ID: 4085641
• Report Number(s): HW-78948
• Country of Publication: United States
• Language: English

Related Subjects

CARBON
CARBON MONOXIDE
CHEMICAL REACTIONS
CHEMISTRY
COBALT 60
CYANIDES
DECOMPOSITION
EFFICIENCY
ETHANE
GAMMA RADIATION
GAMMA SOURCES
GASES
GRAPHITE
HIGH TEMPERATURE
HYDROGEN
IRRADIATION
LOW TEMPERATURE
MEASURED VALUES
METHANE
MIXING
NITROGEN
POROSITY
PRECIPITATION
PRESSURE
PROPANE
QUANTITY RATIO
QUARTZ
RADIATION CHEMISTRY
RADIATION DOSES
RADIATION SOURCES
RADIOLYSIS
REACTORS
SAMPLING
SEALS
TRACE AMOUNTS
TUBES
VESSELS
WEIGHT