Stability and electrokinetic potential of aqueous graphite dispersions in solutions of polyvalent metal salts

Journal Article · Tue Jul 01 00:00:00 EDT 1986 · Colloid J. USSR (Engl. Transl.); (United States)

OSTI ID:6812076

Morarv, V N; Ovcharenko, F D

Three changes in the charge sign of graphite in AlCl/sub 3/ solutions in the pH interval 2-12 and alternation of several zones of stability and coagulation of the dispersions are explained by taking into consideration the hydrolysis and complex formation of Al/sup 3 +/ ions, as well as the character of ionization of the solid-phase groups. Convincing proof has been obtained that it is not the simple Al/sup 3 +/ ions but their hydrolysis products which are capable of altering the charge of the graphite surface. The coagulating and stabilizing power of the aluminum ions depends on their state in solution.

• Research Organization: Institute of Colloid Chemistry, Ukrainian SSR Acad. of Sci.
• OSTI ID: 6812076
• Journal Information: Colloid J. USSR (Engl. Transl.); (United States), Vol. 48:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM CHLORIDES
VALENCE
GRAPHITE
FLOCCULATION
YTTRIUM CHLORIDES
ALUMINIUM COMPOUNDS
AQUEOUS SOLUTIONS
COLLOIDS
COMPLEXOMETRY
ELECTROLYTES
ELECTROPHORESIS
HYDROLYSIS
IONIZATION POTENTIAL
PH VALUE
STABILITY
YTTRIUM COMPOUNDS
CARBON
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
DECOMPOSITION
DISPERSIONS
ELEMENTAL MINERALS
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
LYSIS
MINERALS
MIXTURES
NONMETALS
PRECIPITATION
SEPARATION PROCESSES
SOLUTIONS
SOLVOLYSIS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties