Radiation-induced reactions of antimony and tellurium compounds in sulfuric acid solutions

Journal Article · Thu Jul 10 04:00:00 EDT 1980 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100451a012· OSTI ID:5068268

Moriyama, H; Fujiwara, I; Nishi, T

In deaerated 0.4 M H/sub 2/SO/sub 4/ solutions containing both Sb(III) and Sb(V), Sb(III) was oxidized to Sb(V) and Sb(V) was reduced to Sb(III) by ..gamma.. rays. The initial yield of reduction G/sub i/(Sb(V) ..-->.. Sb(III)) increased linearly with the ratio (Sb(V))/sub 0//(Sb(III))/sub 0/, that of oxidation G/sub i/(Sb(III) ..-->.. Sb(V)) increased with increasing G/sub i/(Sb(V) ..-->.. Sb(III)), and the overall yield of oxidation G/sub i/(Sb(V)) = G/sub i/(Sb(III) ..-->.. Sb(V)) - G/sub i/(Sb(V) ..-->.. Sb(III)) was constant and equivalent to the primary yield of hydrogen g/sub H/sub 2// = 1/2(g/sub OH/ - g/sub H/) + g/sub H/sub 2/O/sub 2//. A possible mechanism of ..gamma..-ray-induced reactions in deaerated solutions was proposed in which Sb(III) was reduced by H and oxidized by OH, Sb(II) was oxidized by H/sub 2/O/sub 2/, and Sb(IV), and the disproportionation of Sb(IV) to Sb(III) and Sb(V) followed. In the presence of Sb(V), reduction of Sb(V) by H gives the same stoichiometry. The results on Te(IV) and Te(VI) in 0.02 M H/sub 2/SO/sub 4/ solutions support a similar sequence to that of the antimony system, in which the unstable valence states Te(III) and Te(V) play an important part.

• Research Organization: Kyoto Univ., Uji, Japan
• OSTI ID: 5068268
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 84:14; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ANTIMONY COMPOUNDS
AQUEOUS SOLUTIONS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DISPERSIONS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
GAMMA RADIATION
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
IONIZING RADIATIONS
MIXTURES
NUMERICAL DATA
OXIDATION
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
REDUCTION
SOLUTIONS
SULFURIC ACID
TELLURIUM COMPOUNDS