Kinetic study of the reduction of neptunium(VI) and plutonium(VI) by iodide ion in aqueous perchlorate media
Journal Article
·
· Inorg. Chem.; (United States)
The title reactions proceed with the stoichiometry 2AnO/sub 2//sup 2 +/ + 2I/sup -/ = 2nO/sub 2//sup +/ + I/sub 2/. The empirical form of the rate law for these reactions is first order in AnO/sub 2//sup 2 +/ and I/sup -/ and independent of hydrogen ion concentration with a small Harned-type factor that arises from the replacement of Li=+lO/sub 4/ by NaI. At 25/sup 0/C and ..mu.. = 1.00, the values for the apparent second-order rate constants are 530 +- 6 and 17.0 +- 0.1 M/sup -1/ s/sup -1/ for NpO/sub 2//sup 2 +/ and PuO/sub 2//sup 2 +/, respectively. The apparent activation parameters for the reduction of NpO/sub 2//sup 2 +/ are ..delta..H* = 12.2 +- 0.3 kcal/mole and ..delta..S* = -6 +- 1 eu and for the reduction of PuO/sub 2//sup 2 +/ are ..delta..H* = 13.8 +- 0.1 kcal/mole and ..delta..S* = -8.0 +- 0.4 eu. The results are discussed in terms of and found to be consistent with the Marcus cross relations.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 7143447
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 16:5; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Kinetic study of the reduction of neptunium (VII) and americium (VI) by bromide ion in aqueous perchlorate media
Kinetics and mechanism of the conversion of a coordinated thiol to a coordinated disulfide by the one-equivalent oxidants neptunium(VI) and cobalt(III) in aqueous perchloric acid
Kinetics of the oxidation of selenium(IV) by neptunium(VII) in aqueous acidic perchlorate media
Journal Article
·
Thu Sep 01 00:00:00 EDT 1977
· Inorg. Chem.; (United States)
·
OSTI ID:7210488
Kinetics and mechanism of the conversion of a coordinated thiol to a coordinated disulfide by the one-equivalent oxidants neptunium(VI) and cobalt(III) in aqueous perchloric acid
Journal Article
·
Thu Jul 01 00:00:00 EDT 1976
· Inorg. Chem.; (United States)
·
OSTI ID:7355063
Kinetics of the oxidation of selenium(IV) by neptunium(VII) in aqueous acidic perchlorate media
Journal Article
·
Sun Oct 31 23:00:00 EST 1976
· Inorg. Chem.; (United States)
·
OSTI ID:7230599
Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ACTIVATION ENERGY
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
ENERGY
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
KINETICS
LITHIUM COMPOUNDS
LITHIUM HALIDES
LITHIUM IODIDES
LITHIUM PERCHLORATES
NEPTUNIUM COMPOUNDS
NEPTUNIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PERCHLORATES
PERCHLORIC ACID
PHOSPHORS
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
REACTION KINETICS
REDUCTION
STOICHIOMETRY
TRANSURANIUM COMPOUNDS
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ACTIVATION ENERGY
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
ENERGY
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
KINETICS
LITHIUM COMPOUNDS
LITHIUM HALIDES
LITHIUM IODIDES
LITHIUM PERCHLORATES
NEPTUNIUM COMPOUNDS
NEPTUNIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PERCHLORATES
PERCHLORIC ACID
PHOSPHORS
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
REACTION KINETICS
REDUCTION
STOICHIOMETRY
TRANSURANIUM COMPOUNDS