Adsorption of osmium (IV) chloride complexes on hydrated zirconium dioxide
In their previous work, they showed that hydrated zirconium dioxide (HZD) selectively adsorbs chloride complexes of platinum (II) and platinum (IV), palladium (II), and rhodium (III) from aqueous hydrochloric acid solutions with metal concentration from 10/sup -3/ to 10/sup -4/ M. In the present work, they studied the adsorption of osmium(IV) chloride complexes on HZD under analogous conditions. The adsorption kinetics for osmium(IV) chloride complexes on HZD and the adsorbent capacity were found to depend on the concentration of the complex, the solution acidity and pH, the nature and concentration of the base electrolyte and the temperature. The adsorption of osmium(IV) ions from acid solutions of the chloro complexes proceeds by an ion exchange mechanism. The adsorption from neutral solutions is related to the ligand interaction of the hydrated osmium(IV) forms with the hydroxyl groups of the adsorbent due to the formation of hydrogen bonds. Further hydration and hydrolysis of the adsorbed osmium(IV) chloride complexes are observed in the adsorbent phase.
- Research Organization:
- Lensovet Leningrad Technological Institute, USSR
- OSTI ID:
- 6181702
- 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
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Related Subjects
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTRA
ADSORPTION
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
DECOMPOSITION
DISPERSIONS
ELECTROLYTES
EQUILIBRIUM
HALIDES
HALOGEN COMPOUNDS
HYDRATES
HYDRATION
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROLYSIS
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE
ION EXCHANGE MATERIALS
KINETICS
LYSIS
MATERIALS
MIXTURES
OSMIUM CHLORIDES
OSMIUM COMPLEXES
OSMIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PH VALUE
QUANTITY RATIO
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SOLVATION
SOLVOLYSIS
SORPTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROPHOTOMETRY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
VALENCE
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES