The solvent extraction behavior of rhenium. Part II. The hydrochloric acid-tributyl phosphate system

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Sep. Sci. Technol.; (United States)

DOI:https://doi.org/10.1080/01496398208060273· OSTI ID:6385045

Pruett, D J; McTaggart, D R

The solvent extraction of heptavalent rhenium from aqueous hydrochloric acid by tributyl phosphate (TBP) in n-dodecane (NDD) has been studied over a wide range of TBP and HCl concentrations at 25, 40, and 60/sup 0/C. The extraction was found to proceed according to the reaction 3TBP + H/sup +/ + ReO/sup -//sub 4/ = (HReO/sub 4/.3TBP). A discussion of the possible nature of the organic phase complex is presented, along with values of ..delta..G, ..delta..H, ..delta..S, and the equilibrium constant for the extraction reaction. The behavior of the KReO/sub 4/-H/sub 2/O-HCl-TBP system is compared and contrasted with that of the KReO/sub 4/-H/sub 2/O-HNO/sub 3/-TBP system and with the analogues KTcO/sub 4/ systems.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6385045
• Journal Information: Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 17:8; ISSN SSTED
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKANES
BUTYL PHOSPHATES
DODECANE
ELEMENTS
ESTERS
EXTRACTION
HYDROCARBONS
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORIC ACID ESTERS
PHYSICAL PROPERTIES
RHENIUM
SEPARATION PROCESSES
SOLVENT EXTRACTION
STOICHIOMETRY
TBP
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENTS