Kinetics of reactions of technetium. VII. Reduction of Tc(VII) by hydrazine in HCl solution

Journal Article · Mon Sep 01 00:00:00 EDT 1986 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6952904

Koltunov, V S; Gomonova, T V

The reaction between Tc(VII) and hydrazine at high temperatures and high concentrations of N/sub 2/H/sub 5/ proceeds with the formation of Tc/sub 2/Cl/sup 2 -//sub 6/ cluster. The reaction rate is given by the equation -d(Tc(VII)/dt=k(Tc(VII) N/sub 2/H/sub 5/) /SUP 0.85/ (H/sup +/) /SUP 1.4/ , where k=0.114 equal to 0.008 liter /SUP 2.25/mole/ >2.25. min at 80/sup 0/C with an ionic strength of 2.1. The activation energy E = 21.8 + or - 1.2 kJ/mole, the entropy ..delta..S = -73 + or - 3 J/mole K. The reaction is limited by the slow stages of interaction of the N/sub 2/H/sup +//sub 5/ ions with TcO/sub 4/ and TcO/sup +//sub 3/ ions.

• OSTI ID: 6952904
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Vol. 28:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HYDRAZINE
CHEMICAL REACTION KINETICS
TECHNETIUM
IONIZATION POTENTIAL
REDUCTION
TECHNETIUM COMPOUNDS
VALENCE
ABSORPTION SPECTRA
ACTIVATION ENERGY
CHEMICAL REACTION YIELD
HYDROCHLORIC ACID
KINETIC EQUATIONS
TECHNETIUM CHLORIDES
TECHNETIUM OXIDES
TIME DEPENDENCE
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
ELEMENTS
ENERGY
EQUATIONS
HALIDES
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
METALS
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SPECTRA
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YIELDS
400201* - Chemical & Physicochemical Properties