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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/5803

Title: Oxidehydrogenation of propane over Ni-Mo supported metal oxides catalysts
Authors: Al-Mesfer, M.K.
Al-Zahrani, S.M.
Abasaeed, A.E.
Keywords: Propane
Propylene
Oxidative dehydrogenation
Catalysts
Nickel
Molybdenium
Chemical Engineering
Issue Date: 2007
Citation: 7th Saudi Engineering Conference, Riyadh.
Abstract: Oxidative dehydrogenation of lower alkanes to their corresponding alkenes offers many advantages over the dehydrogenation process; such as: lower reaction temperatures and prevention of catalyst’s coking. In this paper, Ni-Mo based metal oxide catalysts (without or with Dopants; zinc and boron are used as dopants) were prepared, characterized and tested. BET experiments showed close average pore diameter for all catalysts (19.59-19.71 Ao ) while their surface areas varied in the range 149.1 - 224.4 m2/g . SEM experiments confirmed the good dispersion of the catalysts ingredients over the support. Higher propene yields were obtained with alumina supported catalysts (10%) compared to silica supported one (0.5%) which showed much higher selectivities when doped with boron (45%). Addition of Zn dopant to γ-Al2O3 supported catalyst decreased both the conversion (28.1% to 16.7%) and the selectivity (34% to 30%.). The propene yield was found to increase with increasing reaction temperatures and/or decreasing propane to oxygen ratios.
URI: http://hdl.handle.net/123456789/5803
Appears in Collections:College of Engineering

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