A surface potential study of adsorbed oxygen species on a Bi2Mo3O12 catalyst |
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| Authors: | J M Libre Y Barbaux B Grzybowska and J P Bonnelle |
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| Institution: | (1) Laboratoire de Catalyse Hétérogène et Homogène, E.R.A. C.N.R.S. 458, Université des Sciences et Techniques de Lille, 59655 Villeneuve d'Ascq Cédex, France;(2) Research Laboratories of Catalysis and Surface Chemistry, Polish Academy of Sciences, Ul. Niezapominajek, 30-239 Krakow, Poland |
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| Abstract: | Bi2Mo3O12 is a selective oxidation catalyst of propylene into acrolein. Surface potential measurements proved the presence of an equilibrium between gaseous oxygen and the O2– species adsorbed on the surface of the catalyst, under oxygen atmosphere, in the range 538K–673K. This is in accordance with the fact that O2– is a selective oxidation species. An oxygen adsorption mechanism is also discussed.
      Bi2Mo3O12              .           O–2, ,  538–613  .  , O–2   .  .
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