Propane oxydehydrogenation over metal tungstates

Journal Article · Tue Apr 15 04:00:00 EDT 1997 · Journal of Catalysis

DOI:https://doi.org/10.1006/jcat.1997.1570· OSTI ID:563493

Stern, D L; Grasselli, R K ^[1]

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1. Mobile Technology Company, Paulsboro, NJ (United States)

Metal tungstates containing Ni, Co, Zn, Fe, and Ce, and the binary system Ni{sub 0.5}Co{sub 0.5}WO{sub 4}, were investigated for the oxydehydrogenation of propane. It was found that the tungstates, in particular COWO{sub 4}, constitute a new class of catalysts holding some promise for paraffin oxydehydrogenation, in addition to the previously studied systems based on vanadium-containing compounds (1) and on nickel-cobalt-molybdates. There exists a striking difference between the now studied tungstates and the earlier studied molybdates, with CoWO{sub 4} being the most effective system among the tungstates (8% propylene yield at 20% conversion), while in molybdates NiMoO{sub 4} is most effective (10% propylene yield at 40% conversion). This observed, structure dependent Co for Ni switch was unexpected. The catalyst preparation, characterization, and evaluation was performed in an manner analogous to that described earlier, using the same instruments and catalytic units. The source of tungsten for the preparation of the tungstates was ammonium meta tungstate. Conversion, selectivity, and yield are defined as reported earlier, and carbon, hydrogen, and oxygen closures were typically better than 95%. 3 refs., 2 figs., 2 tabs.

• OSTI ID: 563493
• Journal Information: Journal of Catalysis, Journal Name: Journal of Catalysis Journal Issue: 2 Vol. 167; ISSN 0021-9517; ISSN JCTLA5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
40 CHEMISTRY
CATALYSTS
CATALYTIC EFFECTS
CERIUM TUNGSTATES
CHEMICAL PREPARATION
CHEMICAL REACTION YIELD
COBALT TUNGSTATES
DEHYDROGENATION
HETEROGENEOUS CATALYSIS
IRON TUNGSTATES
NICKEL TUNGSTATES
OXIDATION
PROPANE
ZINC TUNGSTATES