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A Study of Spreading of Vanadia on Titania Polymorphs Using Mechanical Mixtures

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Author

Editor

  • L Guczi et al

Summary, in English

Mechanical mixtures of V2O5 and each of the three titania polymorphs TiO2(B), anatase and rutile were heated in air at 450°C. Spreading of vanadia was found to occur on all three polymorphs. After 36 hours of heating, coverage with interacting vanadia (the part that is insoluble in aq. NH3) on TiO2(B), anatase and rutile, respectively, was 54, 48 and 38 % of a theoretical monolayer. Raman spectra confirmed spreading and interaction. HREM images revealed no formation of multilayers of vanadia on titania. Use of the monolayer catalysts for toluene ammoxidation indicated their activity for benzonitrile formation to vary with respect to support in the order TiO2(B) > anatase > rutile.

Publishing year

1993

Language

English

Pages

1755-1758

Publication/Series

New Frontiers in Catalysis (Studies in Surface Science and Catalysis )

Volume

75

Document type

Conference paper

Publisher

Elsevier

Topic

  • Production Engineering, Human Work Science and Ergonomics
  • Chemical Engineering
  • Chemical Sciences

Conference name

The 10th International Congress on Catalysis

Conference date

1992-07-19 - 1992-07-24

Conference place

Budapest, Hungary

Status

Published

ISBN/ISSN/Other

  • ISSN: 0167-2991