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Citation: Xiao Shaorong. Electrochemical Studies of Heterogeneous Catalysis Between Triiodide and Titanium(Ⅲ) Ions on Platinum[J]. Chinese Journal of Applied Chemistry, ;1997, 14(1): 45-48. shu

Electrochemical Studies of Heterogeneous Catalysis Between Triiodide and Titanium(Ⅲ) Ions on Platinum

Xiao Shaorong

1.
Department of Chemistry, Guangxi Teachers College, Nanning 530001

Received Date: 31 March 1996
Available Online: 17 June 1996

The mixed catalytic rate(ν_mix) of the reaction between I₃^- and Ti³⁺ ions on reduced Pt surface has been calculated through the electrochemical study on electrode reactions of I₃^-/I^- and Ti³⁺/Ti⁴⁺. When the mixed potential(E_mix) lies in the limiting current region, ν_mix is independent of Ti³⁺ concentration and is first-order to[I₃^-]. ν_mix is also proportional to the square root of the rotating speed of electrode. There is only small differences in ν_mix as the H⁺ concentration changes. Results obtained by electrochemistry agree with the results measured by kinetic method. The results of this heterogeneous catalysis in solution have been predicted and explained by pure electrochemistry.
- triiodide ion,
- titanium(Ⅲ) ion,
- rotation disk(Pt) electrode,
- electrochemistry,
- kinetics
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