Catalytic activity and selectivity at low temperature of iron-molybdenum oxide catalysts in methanol oxidation to formaldehyde

  1. V. Rives 1
  2. A. M. Estevez 2
  3. A. F. Tena 2
  4. C. Martín 1
  5. M. C. Márquez 2
  6. M. del Arco 1
  1. 1 Dpto. de Química Inorgánica, Universidad de Salamanca
  2. 2 Dpto. de Ingeniería Química y Textil, Universidad de Salamanca
Zeitschrift:
Chemical and Biochemical Engineering Quarterly

ISSN: 0352-9568

Datum der Publikation: 1990

Ausgabe: 4

Nummer: 2

Seiten: 61-65

Art: Artikel

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Andere Publikationen in: Chemical and Biochemical Engineering Quarterly

Zusammenfassung

Conversion and selectivity achieved during methanol oxidation for formaldehyde using catalysts formed by Fe(III) molybdate, molybdenum(VI) oxide and in some cases doped with chromium have been measured.Operations conditions were different from those normally used in industry when carrying out this same reaction with catalysts similar to those studied here ; a considerably lower temperature (ca. 150 K lower) was used.The results obtained using a fixed bed, tubular catalytic reactor show an importan influence of the operating conditions (temperature, spatial velocity and feed composition) on the conversion and selectivity achieved. Incorporation of chromium as a promoting agent in these catalysts increases the selectivity towards formaldehyde formation during methanol oxidation.