Reaction Kinetics and Catalysis Letters

, Volume 2, Issue 1–2, pp 117–122 | Cite as

Hydrogen adsorption on ruthenium

  • C. D. Zakumbaeva
  • L. B. Shapovalova
Article

Abstract

The adsorption of hydrogen on a ruthenized platinum electrode has been studied. On the potentiodynamic curve two peaks are observed, corresponding to weakly and strongly bonded hydrogen. The adsorption of the two forms of hydrogen increases with increasing temperature. Hydrogen adsorption on ruthenium obeys the Frumkin isotherm for a uniformly heterogeneous surface. The differential heats of adsorption at constant volume have been calculated. The heat of adsorption decreases gradually from 10 kcal/mol (Θ=0.05) to 3.2 kcal/mol (Θ=0.7).

Keywords

Hydrogen Physical Chemistry Platinum Catalysis Ruthenium 

Abstract

В работе пров одилось изучение адсорбции водорода на рутенированном платиновом злектроде. На φ, ϕ-кривой рутения наблюдаются два максимума, соответствующие слабо-и крепкосвязанному водороду. С увеличением температуры возрастает адсорбция обеих форм водорода. Теплота адсорбции водорода равномерно уменьшается от φО ккал/моль (θH=0,05) до 3,2 ккал/моль (θH=0,7).

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References

  1. 1.
    A. Guitier, W. Schieferdecker: Z. Anorg. Allg. Chem.,4, 305 (1929).Google Scholar
  2. 2.
    E. Müller, K. Schwabe: Z. Phys. Chem. A,42, 143 (1931).Google Scholar
  3. 3.
    P. I. Belkievich: “Uch. zap. LGU”, Ser. Khim. Nauk,40, 134 (1939); Zh. Obshch. Khim.,9, 944 (1939).Google Scholar
  4. 4.
    I. I. Kavtoradze: Zh. Obshch. Khim.,32, 1214 (1959).Google Scholar
  5. 5.
    D. Stevenson: J. Chem. Soc., 1203 (1955).Google Scholar
  6. 6.
    T. H. Stoyanovskaya, G. P. Khomchenko, G. D. Vovchenko: Vestn. MGU, Ser. Khim.,2, 20 (1963);6, 50 (1963);3, 40 (1964);5, 130 (1962);2, 56 (1965),4, 61 (1965).Google Scholar
  7. 7.
    Yu. A. Podvyazkin: Kinetika i Kataliz,11, 1077 (1970).Google Scholar
  8. 8.
    F. B. Goneym: Thesis, MGU, Moscow 1963.Google Scholar
  9. 9.
    A. V. Frumkin: Hydrogen Overvoltage and Adsorption Phenomena. Part 11, London 1962.Google Scholar

Copyright information

© Akadémiai Kiadó 1975

Authors and Affiliations

  • C. D. Zakumbaeva
    • 1
  • L. B. Shapovalova
    • 1
  1. 1.Academy of SciencesInstitute of Organic Catalysis and ElectrochemistryAlma-AtaUSSR

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