Influence of the preparative method on the activity of highly acidic WO{sub x}/ZrO{sub 2} and the relative acid activity compared with zeolites

Journal Article · Sun Jun 01 00:00:00 EDT 1997 · Journal of Catalysis

DOI:https://doi.org/10.1006/jcat.1997.1658· OSTI ID:539468

Santiesteban, J G; Vartuli, J C; Han, S ^[1]

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1. Mobil Technology Company, Paulsboro, NJ (United States); and others

The acid activity of the solid tungsten/zirconia can be affected by the catalyst preparation method. Reflux of the hydrous zirconia prior to tungsten impregnation gives a catalyst with higher surface area than the nonrefluxed material, 62 vs 32 m{sup 2}/g, but with the same strong acid site density, as determined by n-pentane isomerization activity. It is also shown that the simultaneous coprecipitation of tungsten with the formation of hydrous zirconia yields a catalyst with about two times the strong acid site density of WO{sub x}/ZrO{sub 2} catalysts prepared by impregnation. 30 refs., 6 figs., 12 tabs.

• OSTI ID: 539468
• Journal Information: Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 2 Vol. 168; ISSN 0021-9517; ISSN JCTLA5
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BROENSTED ACIDS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL PROPERTIES
PH VALUE
SURFACE PROPERTIES
TUNGSTEN OXIDES
ZEOLITES
ZIRCONIUM OXIDES