Reduced molybdenum oxide catalysts with high surface areas. Preparation and activites

T. Fransen, P.C. van Berge, P. Mars

Research output: Contribution to journalArticleAcademic

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Abstract

From solutions of ammonium molybdate this salt was precipitated with acetone. Decomposition in air at 330 °C yields MoO3 with a specific surface area of 17 m2/g, by means of reduction with hydrogen 4.5, 4 and 3.5 valent oxides may be formed with 30, 50 and 80 m2/g, respectively. Molybdenum (VI) oxide present as a monomolecular layer on supports is much less readily reduced than unsupported MoO3. This difference reflects the interaction of Mo ions with ions of the support. The reducibilities of the various catalysts show that Mo(VI) oxides interact far less with SiO2 than with Al2O3, CeO2 and ZrO2. This is also reflected in the rates of 2-propanol decomposition on these catalysts, the activities on MoOx and on MoOx−SiO2 being much higher than on the other catalysts.
Original languageUndefined
Pages (from-to)445-452
JournalReaction kinetics and catalysis letters
Volume5
Issue number4
DOIs
Publication statusPublished - 1976

Keywords

  • IR-85588

Cite this

Fransen, T. ; van Berge, P.C. ; Mars, P. / Reduced molybdenum oxide catalysts with high surface areas. Preparation and activites. In: Reaction kinetics and catalysis letters. 1976 ; Vol. 5, No. 4. pp. 445-452.
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Reduced molybdenum oxide catalysts with high surface areas. Preparation and activites. / Fransen, T.; van Berge, P.C.; Mars, P.

In: Reaction kinetics and catalysis letters, Vol. 5, No. 4, 1976, p. 445-452.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - Reduced molybdenum oxide catalysts with high surface areas. Preparation and activites

AU - Fransen, T.

AU - van Berge, P.C.

AU - Mars, P.

PY - 1976

Y1 - 1976

N2 - From solutions of ammonium molybdate this salt was precipitated with acetone. Decomposition in air at 330 °C yields MoO3 with a specific surface area of 17 m2/g, by means of reduction with hydrogen 4.5, 4 and 3.5 valent oxides may be formed with 30, 50 and 80 m2/g, respectively. Molybdenum (VI) oxide present as a monomolecular layer on supports is much less readily reduced than unsupported MoO3. This difference reflects the interaction of Mo ions with ions of the support. The reducibilities of the various catalysts show that Mo(VI) oxides interact far less with SiO2 than with Al2O3, CeO2 and ZrO2. This is also reflected in the rates of 2-propanol decomposition on these catalysts, the activities on MoOx and on MoOx−SiO2 being much higher than on the other catalysts.

AB - From solutions of ammonium molybdate this salt was precipitated with acetone. Decomposition in air at 330 °C yields MoO3 with a specific surface area of 17 m2/g, by means of reduction with hydrogen 4.5, 4 and 3.5 valent oxides may be formed with 30, 50 and 80 m2/g, respectively. Molybdenum (VI) oxide present as a monomolecular layer on supports is much less readily reduced than unsupported MoO3. This difference reflects the interaction of Mo ions with ions of the support. The reducibilities of the various catalysts show that Mo(VI) oxides interact far less with SiO2 than with Al2O3, CeO2 and ZrO2. This is also reflected in the rates of 2-propanol decomposition on these catalysts, the activities on MoOx and on MoOx−SiO2 being much higher than on the other catalysts.

KW - IR-85588

U2 - 10.1007/BF02060893

DO - 10.1007/BF02060893

M3 - Article

VL - 5

SP - 445

EP - 452

JO - Reaction Kinetics, Mechanisms and Catalysis

JF - Reaction Kinetics, Mechanisms and Catalysis

SN - 1878-5190

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ER -