Sorption of the chloride complexes of iridium(IV) by hydrated zirconium dioxide

Journal Article · Mon Oct 20 04:00:00 EDT 1986 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6291130

Nikol'skaya, L V; Boichinova, E S; Simanova, S A

Studies have previously been made of the sorption of the chloride complexes of platinum(IV), platinum(II), palladium(II), rhodium(III), and iridium(III) by hydrated zirconium dioxide (HZD). The objective of the present work is the study of the sorption of the chloride complexes of iridium(IV) by HZD in similar circumstances. It has been ascertained that the kinetics of the sorption of the chloride complexes of Ir(IV) on HZD and the capacity of the sorbent are functions of the concentration of the complex, the pH of the solution and its hydrochloric-acid concentration, and the nature and concentration of the base electrolyte. The sorption of the Ir(IV) chlorocomplexes from acid solutions takes place via an ion-exchange mechanism; sorption from neutral solutions is linked to a ligand reaction between the aquated forms of Ir(IV) and the aquo and hydroxo groups of the sorbent.

• Research Organization: Lensovet Leningrad Technological Institute, USSR
• OSTI ID: 6291130
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 59:5; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ADSORBENTS
ADSORPTION
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
COMPLEXOMETRY
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDRATES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE
ION EXCHANGE MATERIALS
IRIDIUM CHLORIDES
IRIDIUM COMPLEXES
IRIDIUM COMPOUNDS
KINETICS
LIGANDS
MATERIALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PH VALUE
QUANTITY RATIO
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROPHOTOMETRY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
VALENCE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES