Advertisement

Kinetics and Catalysis

, Volume 41, Issue 3, pp 340–348 | Cite as

Kinetics and mechanism of water catalytic oxidation by a Ru3+(bpy)3 complex in the presence of colloidal cobalt hydroxide

  • O. P. Pestunova
  • G. L. Elizarova
  • V. N. Parmon
Article

Abstract

Kinetics of the catalytic oxidation of water to molecular oxygen by a tris(bipyridyl) Ru(III) complex is studied in the presence of colloidal cobalt hydroxide stabilized by starch. Oxidant consumption follows the first-order rate law with respect to the oxidant concentration. The dependence of the apparent rate constant of this process on the catalyst concentration, initial oxidant concentration, and initial concentration of its reduced form was determined. The dependence of the oxygen yield on H+ at pH 7–11 and a catalyst concentration of 10-7-10-3 mol1 is studied. An intermediate product of the reaction was found, which is probably a bridged peroxo complex of cobalt. The kinetic scheme and mechanism of the reaction is proposed, which agree with experimental observations.

Keywords

Kinetic Curf Borate Buffer Catalyst Concentration Bipyridyl Ruthenium Complex 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Gosh, P.K., Brunschiwig, B.S., Chou, M., et al.,J. Am. Chem. Soc, 1984, vol. 106, no. 17, p. 4772.CrossRefGoogle Scholar
  2. 2.
    Brunschiwig, B.S., Chou, M., Creutz, C., and Sutin, N.,J. Am. Chem. Soc, 1983, vol. 105, no. 14, p. 4832.CrossRefGoogle Scholar
  3. 3.
    Moravskii, A.P., Khannanov, N.K., Khramov, A.V.,et al., Khim. Fiz., 1984, vol. 3, no. 11, p. 1584.Google Scholar
  4. 4.
    Elizarova, G.L., Gerasimov, O.V., Matvienko, G.L.,et al.,Izv. Sib. Otd. Akad. Nauk SSSR, Ser. Khim. Nauk, 1990, no. 3, p. 94.Google Scholar
  5. 5.
    Gerasimov, O.V.,Cand. Sci. (Chem.) Dissertation, Novosibirsk: Inst. of Catalysis, 1988.Google Scholar
  6. 6.
    Filatov, M.J.., Elizarova, G.L., Zhidomirov, G.M., and Parmon, V.N.,J. Molec. Catal, 1994, vol. 91, no. 1, p. 71.CrossRefGoogle Scholar
  7. 7.
    Parmon, V.N., Elizarova, G.L., and Zhidomirov, G.M.,11th Int. Conf. on Photochemical Conversion and Storage of Solar Energy (IPS-11), Bangolore, 1996, p. 33.Google Scholar
  8. 8.
    Elizarova, G.L., Matvienko, L.G., Pestunova, O.P., and Parmon, V.N.,Kinet. KataL, 1994, vol. 35, no. 3, p. 362.Google Scholar
  9. 9.
    Lur’e, Yu.Yu.,Spravochnik po analiticheskoi khimii (Handbook on Analytical Chemistry), Moscow: Mir, 1969.Google Scholar
  10. 10.
    Liu, C.F., Liu, N.C., and Bailar, J.C.,Inorg. Chem., 1964, vol. 3, no. 8, p. 1085.CrossRefGoogle Scholar
  11. 11.
    Creutz, C. and Sutin, N.,Proc. Nati Acad. Sci. U.S.A., 1975, vol. 72, no. 8, p. 2855.CrossRefGoogle Scholar
  12. 12.
    Mori, M., Shibata, M., and Kyuno, E.,Bull Chem. Soc. J.pn., 1956, vol. 29, p. 883.CrossRefGoogle Scholar
  13. 13.
    Elizarova, G.L., Matvienko, L.G., Taran, O.P.,et al., Kinet. Katal, 1992, vol. 33, no. 4, p. 898.Google Scholar
  14. 14.
    Khannanov, N.K. and Shafirovich, V.Ya.,Kinet. Katal, 1981, vol. 22, no. l,p. 248.Google Scholar
  15. 15.
    Khannanov, N.K., Khramov, A.V., Moravskii, A.P., and Shafirovich, V.Ya.,Kinet. Katal, 1983, vol. 24, no. 4, p. 858.Google Scholar
  16. 16.
    Bratushko, Yu.L,Koordinatsionnye soedineniya 3d-perekhodnykh metallov s molekulyamym kislorodom (Coordination Compounds of3d Transition Metals with Molecular Oxygen), Kiev: Naukova Dumka, 1987.Google Scholar
  17. 17.
    Sykes, A.G. and Weil, J.A.,Prog. Inorg. Chem., 1970, vol. 13, p. 1.CrossRefGoogle Scholar
  18. 18.
    Hoffman, A.B. and Taube, H.,Inorg. Chem., 1968, vol. 7, no. 10, p. 1971.CrossRefGoogle Scholar
  19. 19.
    Mahroof-Tahir, M., Murthy, N.N., Karlin, K.D.,et al., Inorg. Chem., 1992, vol. 31, no. 14, p. 3000.CrossRefGoogle Scholar
  20. 20.
    Gerasimov, O.V., Elizarova, G.L., and Parmon, V.N.,Izv. Akad. Nauk SSSR, Ser. Khim., 1988, no. 6, p. 1243.Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • O. P. Pestunova
    • 1
  • G. L. Elizarova
    • 1
  • V. N. Parmon
    • 1
  1. 1.Boreskov Institute of Catalysis, Siberian DivisionRussian Academy of SciencesNovosibirskRussia

Personalised recommendations