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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12334

Title: Performances of new Kieselguhr-supported transition metal oxide catalysts in propane oxydehydrogenation
Authors: Jibril, B.Y.
Al-Kinany, M.C.
Al-Khowaiter, S.H
Al-Drees, S.A.
Al-Megren, H.A.,
Al-Dosari, M.A.
Al-Rasheed, R.H.
Al-Zahrani, S.M.,
Abasaeed, A.E.
Keywords: Catalyst; Dehydrogenation; First row transition metals; Kieselguhr; Oxidative; Propane; Propylene
Issue Date: 2006
Publisher: Elsevier B.V.
Citation: Catalysis Communications : Volume 7, Issue 2, Pages 79-85
Abstract: Kieselguhr-supported transition metal oxides (where metal is V, Cr, Mn, Co, Ni or Mo) were prepared by impregnation method and characterized by BET (surface area), XPS (binding energies) and XRF (elemental). They were tested in oxidative dehydrogenation of propane at 350-500 °C and atmospheric pressure. At similar reaction condition, propane conversions along the first row (V, Cr, Mn, Co and Ni) formed a maximum. The maximum conversion was exhibited by either manganese- or cobalt-based catalyst depending on the reaction temperature. At low conversions, CO2 was the sole product. When the conversion was increased, propylene, ethylene and CO were also produced. At 500 °C, manganese-based catalysts exhibited the highest olefins yields of 6.5%. The low olefins yields have been associated with low level of interaction between the support and active components, as evidenced by XPS. The results show that the new Kieselguhr-supported transition metal oxide catalysts are active in oxidative dehydrogenation of propane but their redox properties need to be modified to improve the olefins selectivities.
URI: http://hdl.handle.net/123456789/12334
ISSN: 15667367
Appears in Collections:College of Engineering

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