Vanadium oxide monolayer catalysts. I. Preparation, characterization, and thermal stability

F. Roozeboom, T. Fransen, P. Mars, P.J. Gellings

Research output: Contribution to journalArticleAcademic

116 Citations (Scopus)
1003 Downloads (Pure)

Abstract

Vanadium oxide catalysts of the monolayer type have been prepared by means of chemisorption of vanadate(V)-anions from aqueous solutions and by chemisorption of gaseous V2O3(OH)4. Using Al2O3, Cr2O3, TiO2, CeO2 and ZrO2, catalysts with an approximately complete monomolecular layer of vanadium(V) oxide on the carrier oxides can be prepared, if temperature is not too high. Divalent metal oxides like CdO and ZnO may already form threedimensional surface vanadates at moderate temperature. The thermal stability of a monolayer catalyst is related to the parameter z/a, i. e. the ratio of the carrier cation charge to the sum of ionic radii of carrier cation and oxide anion. Thus, monolayer catalysts will be thermally stable only under the condition that z/a is not too high (aggregated catalyst) nor too small (ternary compound formation).
Original languageUndefined
Pages (from-to)25-40
JournalZeitschrift für anorganische und allgemeine Chemie
Volume449
Issue number1
DOIs
Publication statusPublished - 1979

Keywords

  • IR-70735

Cite this