Solubilities of bromide salts of aluminum, cobalt, lead, manganese, potassium, and sodium when sparged with hydrogen bromide

Book · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6504641

Noble, E G; Shanks, D E

The effects of HBr concentration and temperature on the solubility and hydration state of AlBr/sub 3/, CoBr/sub 2/, PbBr/sub 2/, MnBr/sub 2/, KBr, and NaBr were investigated by the Bureau of Mines. Saturated aqueous solutions of the Al, Pb, K, and Na bromides were sparged with HBr gas at 20/sup 0/, 40/sup 0/, and 60/sup 0/C, and saturated solutions of Co and Mn bromides were sparged at 20/sup 0/C. Increased HBr concentration caused decreased salt solubility because of the common ion effect for all the investigated bromides except PbBr/sub 2/. Aqueous solubilities at 20/sup 0/C were, in percent, 51.7 for AlBr/sub 3/, 53.2 for CoBr/sub 2/, 1.1 for PbBr/sub 2/, 59.6 for MnBr/sub 2/, 39.5 for KBr, and 47.4 for Na Br. At 60/sup 0/C,the solubilities were, in percent, 53.3 for AlBr/sub 3/, 2.2 for PbBr/sub 2/, 46.0 for KBr, and 53.8 for NaBr. Solubilities in solutions sparged to HBr saturation at 20/sup 0/C were, in percent, 0.5 for AlBr/sub 3/, 42.0 for CoBr/sub 2/, 32.2 for Br/sub 2/, 21.0 for MnBr/sub 2/, 0.6 for KBr, and 0.3 for NaBr. At 60/sup 0/C, the solubilities at HBr saturation were, in percent, 1.8 for AlBr/sub 3/, 41.4 for PbBr/sub 2/, 1.3 for KBr, and 0.4 for NaBr. CoBr/sub 2/ precipitated out to a minimum solubility of 27.2 pct at 28.7-pct-HBr concentration. Further increases in HBr concentration increased CoBr/sub 2/ solubility because of the formation of bromide complexes. PbBr/sub 2/ increased in solubility as HBr concentration increased.

• OSTI ID: 6504641
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM BROMIDES
SOLUBILITY
COBALT BROMIDES
HYDROBROMIC ACID
SOLVENT PROPERTIES
LEAD BROMIDES
MANGANESE BROMIDES
POTASSIUM BROMIDES
SODIUM BROMIDES
AQUEOUS SOLUTIONS
SATURATION
SPARGERS
SPRAYS
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
COBALT COMPOUNDS
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LEAD COMPOUNDS
LEAD HALIDES
MANGANESE COMPOUNDS
MANGANESE HALIDES
MIXTURES
POTASSIUM COMPOUNDS
SODIUM COMPOUNDS
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties