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THE INTERSECTION OF STABLE AND NON-EQUILIBRIUM TETRAHEDRA IN A MUTUAL 7- COMPONENT SYSTEM OF Li, Na, Rb, T1/Br, C1, NO$sub 3$, SO$sub 4$ (in Russian)

Journal Article · · Doklady Akad. Nauk S.S.S.R.
OSTI ID:4064334
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The most stable configuration of the mixture of the 16 salts formed from Li, Na, Rb, Tl/Br, Cl, NO/sub 3/, and S0/sub 4/ con ture which however interact, resulting in a stable mixture. On the basis of exchange reactions the following equation has been derived: LiBr + NaNO/sub 3/ + RbCl + 1/2Tl/sub 2/SO/sub 4/ = 1/ 2LiSO/sub 4/ + NaCl + RbNO/sub 3/ + TlBr. In addition, several binary complexes are also formed, such as Li/sub 2/SO/sub 4/ - Rb/sub 2/SO/sub 4/, 4Li/sub 2/SO/ sub 4/ - RbSO /sub 4/, RbCl - 2Li/sub 2/SO/sub 4/ and possible others. In view of the great interest, the intersection of stable and non-equilibrium tetrahedra consisting of components of both, was experimentally studied by thermai analysis. On the basis of cooling curves the following deflection points have been observed: 453 deg C, precipitation of the first Li/sub 2/SO/sub 4/ crystals; 409 deg , coprecipitation of Li/sub 2/SO/sub 4/ and NaCl; 391 deg , coprecipitation of Li/sub 2/SO/sub 4/, NaCl snd TlBr; and finally at 107 deg , formation of the quaternary eutectic with the previously mentioned salts + RbNO/sub 3/. The microstructures of the stable and non-equilibrium phases are quite similar. (TTT)

Research Organization:
All-Union Scientific Research and Construction Inst. of Chemical Equipment, USSR
NSA Number:
NSA-15-021173
OSTI ID:
4064334
Journal Information:
Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 137
Country of Publication:
Country unknown/Code not available
Language:
Russian

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Related Subjects

CHEMICAL REACTIONS
CONFIGURATION
COOLING
CRYSTALS
EUTECTICS
EXPANSION
LATTICES
LITHIUM BROMIDES
LITHIUM SULFATES
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
MIXING
PHASE DIAGRAMS
PRECIPITATION
REACTION KINETICS
RUBIDIUM CHLORIDES
RUBIDIUM NITRATES
RUBIDIUM SULFATES
SALTS
SODIUM CHLORIDES
SODIUM NITRATES
STABILITY
TEMPERATURE
TESTING
THALLIUM BROMIDES
THALLIUM SULFATES
THERMAL ANALYSIS