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), Vol. 59:5; Other Information: Translated from Zh. Prikl. Khim.; 59: No.5, 979-983(May 1986)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
OSMIUM CHLORIDES
ADSORPTION
OSMIUM COMPLEXES
ZIRCONIUM OXIDES
SORPTIVE PROPERTIES
ABSORPTION SPECTRA
AQUEOUS SOLUTIONS
CHEMICAL REACTION KINETICS
ELECTROLYTES
EQUILIBRIUM
HYDRATES
HYDRATION
HYDROCHLORIC ACID
HYDROLYSIS
INORGANIC ION EXCHANGERS
ION EXCHANGE
PH VALUE
QUANTITY RATIO
SPECTROPHOTOMETRY
VALENCE
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
DECOMPOSITION
DISPERSIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
ION EXCHANGE MATERIALS
KINETICS
LYSIS
MATERIALS
MIXTURES
OSMIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SOLVATION
SOLVOLYSIS
SORPTION
SPECTRA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
400201* - Chemical & Physicochemical Properties