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1 Polish Journal of Chemistry

1 1998

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Oxidative dehydrogenation of isobutane on nickel and chromium oxide systems dispersed on different supports

Moriceau P., Grzybowska B., Barbaux Y.

Polish Journal of Chemistry

1998

Vol. 72, nr 5

910-915

Nickel oxide and chromia supported on ThO2, CeO2 and SiO2 have been tested in oxidative dehydrogenation of isobutane. Both NiO- and Cr2O3-based systems have been found active in this reaction already around 300 degree C, the catalytic performance being dependent on the nature of the support. Chromia-based catalysts are more active and selective as compared with the NiO-based ones. The highest activity and selectivity have been observed for CrOX/CeO2 system. The basicity of the catalysts determined by a probe reaction of the isopropanol dehydrogenation follows the same sequence as the total activity in the oxidative dehydrogenation of isobutane, which suggests an activation of theC-H bond on basic centres of the catalysts.