Kinetics of the complexation of nickel (II) with 8-hydroxyquinoline in aqueous solution

Conference · Sat Oct 01 04:00:00 EDT 1988 · Sep. Sci. Technol.; (United States)

OSTI ID:6221502

Li, K Y; Smith, L L

The complexation of nickel ion (II) with 8-Hydroxyquinoline were studied in aqueous solution for the pH range from 4.6 to 5.4 and the temperature range from 15/degrees/C to 50/degrees/C. The reactions were found to be first-order for the nickel ion concentration and inverse first-order for the hydrogen ion concentration. The formula of the observed rate constant may be expressed as k/sub obs/ = k/sub +1/K/sub H1/ (N/sub i//sup + +/)/(H/sup +/) + k/sub /minus/1/ where k/sub +1/ and k/sub /minus/1/ represent the forward and the backward step reaction rate constant, and K/sub Hl/ is the equilibrium constant for 8-hydroxyquinoline in aqueous solution. Both k/sub +1/ and k/sub /minus/1/ follow Arrhenius equation behavior and the activation energy is calculated as 8.9 Kcal/g-mole for the forward reaction and 10.63 kCal/g-mole for the backward reaction.

• Research Organization: Lamar Univ., Beaumont, TX (USA)
• OSTI ID: 6221502
• Report Number(s): CONF-871038-
• Conference Information: Journal Name: Sep. Sci. Technol.; (United States) Journal Volume: 23:12-13
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
400201* -- Chemical & Physicochemical Properties
ACTIVATION ENERGY
AQUEOUS SOLUTIONS
AROMATICS
ARRHENIUS EQUATION
AZAARENES
AZINES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMPLEXES
DATA
DISPERSIONS
ELEMENTS
ENERGY
EQUATIONS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDROGEN
HYDROXY COMPOUNDS
INFORMATION
KINETICS
MEDIUM TEMPERATURE
METALS
MIXTURES
NICKEL
NICKEL COMPLEXES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXINE
PH VALUE
PYRIDINES
QUANTITY RATIO
QUINOLINES
REACTION KINETICS
SOLUTIONS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS