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Abstract

 Supported vanadium oxide (5 wt%) on either Kieselguhr or mesoporous MCM-41 was prepared using impregnation method and tested as a catalyst in propane oxidative dehydrogenation (POD). The catalyst samples were characterized using X-ray elemental analysis, Brunauer-Emmett-Teller (BET) physisorption, and Z-ray Photoelectron Spectroscopy (XPS). After impregnation, the catalyst surface area decreased compared with that of the support. More drastic decrease was observed in the case of MCM-41 (77%) than the Kieselguhr supported sample (48%). There are also different degrees of vanadium oxide-support interaction as reflected by the XPS result. Si-O binding energy of 531.5 eV was observed on MCM-41-supported sample compared with 529.5 eV for the Kieselguhr-supported sample. The catalyst tests were conducted at atmospheric pressure, with a propane to oxygen ratio of 0.7 - 3.6 and a reaction temperature of 400 - 700 °C. Oxidative dehydrogenation and combustion products were observed. Minor cracking reaction products (methane, ethane, and ethene) were also produced above 550 °C. The highest propene yield of 14% was obtained from the Kieselguhr-supported sample at 700 °C and with a C3 H8 /O2  ratio of 1.5.

 

Keywords

Oxidative dehydrogenation Propane Propene Vanadium oxide Kieselguhr MCM-41

Article Details

How to Cite
Jibril, B., Atta, A., Al-Dress, S., Al-Kinany, M., & Al-Megren, H. (2012). Oxydehydrogenation of Propane over Vanadium Oxide Supported on Kieselguhr or MCM-41. The Journal of Engineering Research [TJER], 9(1), 46–54. https://doi.org/10.24200/tjer.vol9iss1pp46-54

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