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Hydrous oxide activated charcoal

Patent ·
OSTI ID:5815284

This patent describes a process for preparing of an ion exchanger, comprising: treating an ionically inert activated charcoal porous support with an aqueous solution of metal oxychloride selected from the group consisting of zirconium and titanium oxychlorides so as to impregnate the pores of the support with the solution; separating the treated support from excess metal oxychloride solution; converting the metal oxychloride to a hydrous metal oxide precipitate in the pores of the support at a pH above 8 and above the pH whereat the hydrous metal oxide and activated charcoal support have opposite zeta potentials and sufficient to hydrolyze the metal oxychloride. It also describes a process for preparing an ion exchanger comprising: treating granulated activated charcoal with a concentrated solution of a metal oxychloride from the group consisting of zirconium and titanium oxychlorides, degassing the mixture; and treating the resultant mixture with a base selected from the group consisting of ammonium hydroxide and alkali metal hydroxides so as to precipitate the oxychloride within the pores of the activated carbon granules as hydrous metal oxide at a pH above 8 and above the pH whereat the hydrous metal oxide and activated charcoal have opposite zeta potentials.

Assignee:
Dow Chemical Co., Midland, MI
Patent Number(s):
US 4692431
OSTI ID:
5815284
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACTIVATED CARBON
ADSORBENTS
ALKALI METAL COMPOUNDS
AMMONIUM COMPOUNDS
AMMONIUM HYDROXIDES
AQUEOUS SOLUTIONS
CARBON
CHARCOAL
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CRYSTAL STRUCTURE
DECOMPOSITION
DEGASSING
DISPERSIONS
ELEMENTS
GRANULAR MATERIALS
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROLYSIS
HYDROXIDES
ION EXCHANGE
ION EXCHANGE MATERIALS
LYSIS
MATERIALS
MICROSTRUCTURE
MIXTURES
NONMETALS
ORGANIC ION EXCHANGERS
OXYCHLORIDES
OXYGEN COMPOUNDS
PH VALUE
POROSITY
PRECIPITATION
SEPARATION PROCESSES
SOLUTIONS
SOLVOLYSIS
SYNTHESIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS