Influence of polycarboxylic acid chelating agents on the kinetics of the dissolution of metal oxides

Journal Article · Sat Nov 01 00:00:00 EST 1986 · Sov. J. Coordinat. Chem.; (United States)

OSTI ID:6476522

Dyatlova, N M; Gorichev, I G; Dukhanin, V S; Malov, L V

The factors influencing the rate of dissolution of metal oxides in aqueous solutions of acids in the presence of polycarboxylic acid chelating agents and other complexing agents have been quantitatively compared in this review, and the decisive role of the gradient of protons and electrons in the realization of this process has been revealed. The main hypotheses of the proposed conceptions of the electron-proton theory for the dissolution of metal oxides have been stated: 1) The rate-limiting step is charge transfer (first hypothesis); 2) The rate limiting step is the desorption of the dissolution products (second hypothesis). The applicability of the proposed electron-proton theory to the theoretical substantiation of all the experimentally observed kinetic features of the influence of various factors has been demonstrated. Practical recommendations for the effective utilization of the chelating agents considered for removing iron oxide surface deposits have been given.

• Research Organization: Kursk Polytechnic Institute, USSR
• OSTI ID: 6476522
• Journal Information: Sov. J. Coordinat. Chem.; (United States), Vol. 12:1; Other Information: Translated from Koordinatsionnaya Khimiya, 12: No. 1, 3-27(Jan 1986)
• Country of Publication: United States
• Language: Russian

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBOXYLIC ACIDS
SOLVENT PROPERTIES
CHELATING AGENTS
OXIDES
DISSOLUTION
THERMAL POWER PLANTS
DESCALING
ACTIVATION ENERGY
ADIPIC ACID
ADSORPTION
AQUEOUS SOLUTIONS
BERYLLIUM OXIDES
CHEMICAL REACTION KINETICS
CHROMIUM OXIDES
COMPARATIVE EVALUATIONS
COMPLEXOMETRY
COPPER OXIDES
DESORPTION
EDTA
ELECTROCHEMISTRY
GLYCOLIC ACID
HYDROCHLORIC ACID
HYDROFLUORIC ACID
IRON OXIDES
KINETIC EQUATIONS
MAGNESIUM OXIDES
MAGNETITE
MALONIC ACID
MANGANESE OXIDES
NICKEL OXIDES
NIOBIUM OXIDES
NITRIC ACID
OXIDE MINERALS
OXYGEN
PARTIAL PRESSURE
PERCHLORIC ACID
PHOSPHORIC ACID
PROTONS
SOLUBILITY
STOICHIOMETRY
SUCCINIC ACID
SULFURIC ACID
SURFACE TENSION
TANTALUM OXIDES
URANIUM OXIDES
VANADIUM OXIDES
ZINC OXIDES
ACTINIDE COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
AMINO ACIDS
BARYONS
BERYLLIUM COMPOUNDS
CHALCOGENIDES
CHEMISTRY
CHROMIUM COMPOUNDS
COPPER COMPOUNDS
DICARBOXYLIC ACIDS
DISPERSIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY
EQUATIONS
FERMIONS
HADRONS
HYDROGEN COMPOUNDS
HYDROXY ACIDS
INORGANIC ACIDS
IRON COMPOUNDS
IRON ORES
KINETICS
MAGNESIUM COMPOUNDS
MANGANESE COMPOUNDS
MINERALS
MIXTURES
MONOCARBOXYLIC ACIDS
NICKEL COMPOUNDS
NIOBIUM COMPOUNDS
NONMETALS
NUCLEONS
ORES
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POWER PLANTS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SOLUTIONS
SORPTION
SURFACE FINISHING
SURFACE PROPERTIES
TANTALUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
URANIUM COMPOUNDS
VANADIUM COMPOUNDS
ZINC COMPOUNDS
400201* - Chemical & Physicochemical Properties