PREPARATION OF CERTAIN THORIUM SULFIDES BY THE INTERACTION OF THORIUM DIOXIDE WITH HYDROGEN SULFIDE (in Russian)
Journal Article
·
· At. Energ. (USSR)
OSTI ID:4099231
In view of the semiconducting properties of some of the higher Th sulfides, the interaction of ThO/sub 2/ with H/sub 2/S was investigated, using a 99.8% pure oxide in a simple apparatus. The ThO/sub 2/ was heated in a porcelain boat placed in a quartz tube through which a stream of H/sub 2/S was flowing. Analysis of the sulfidization products obtained at various temperatures revealed that at 600 deg C the S content increases sharply, then gradually approaches the value of ThS/sub 1.7/. Between 900 and 1100 deg the oxysulfide ThOS was formed. Complete removal of O and formation of the pure sulfide ThS/sub 1.7/ was reached only at 1200 to 1300 deg C. X-ray-diffraction studies revealed that the material has a hexagonal structure with elementary cell dimensions of a = 11.045 kK and c = 3.984 kX, which is close to the tabular values of ThS/sub 1.7/. Continued sulfidization did not affect the structure. The product had a microhardness of 3.6 to 7 x 10/sup 7/ ohm cm, which is about twice higher than previously reported values. Tests were also carried out in a graphite boat; in that case ThOS was obtained at 800 to 1000 deg C. At 1300 deg C the brown ThS/sub 2/ was obtained. This product had a rhombic structure with lattice parameters close to those given in the literature. (TTT)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-008342
- OSTI ID:
- 4099231
- Journal Information:
- At. Energ. (USSR), Journal Name: At. Energ. (USSR) Vol. Vol: 15
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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Related Subjects
CERAMICS
CHEMICAL REACTIONS
CHEMISTRY
CONFIGURATION
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
GAS FLOW
GRAPHITE
HEATING
HIGH TEMPERATURE
HYDROGEN SULFIDES
INTERACTIONS
LATTICES
OXYSULFIDES
PORCELAIN
PREPARATION
QUALITATIVE ANALYSIS
QUARTZ
SEMICONDUCTORS
SULFIDES
TEMPERATURE
TESTING
THORIUM OXIDES
THORIUM SULFIDES
TUBES
X RADIATION
CHEMICAL REACTIONS
CHEMISTRY
CONFIGURATION
CRYSTALS
DIFFRACTION
ELECTRIC CONDUCTIVITY
GAS FLOW
GRAPHITE
HEATING
HIGH TEMPERATURE
HYDROGEN SULFIDES
INTERACTIONS
LATTICES
OXYSULFIDES
PORCELAIN
PREPARATION
QUALITATIVE ANALYSIS
QUARTZ
SEMICONDUCTORS
SULFIDES
TEMPERATURE
TESTING
THORIUM OXIDES
THORIUM SULFIDES
TUBES
X RADIATION