OXIDATIVE DEHYDROGENATION OF PROPANE TO PROPYLENE OVER VOx/CaO-gAl2O3 IN A FLUIDIZED BED. Masters thesis, King Fahd University of Petroleum and Minerals.

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Arabic Abstract

الاسم الكامل: افيس ايوديجي ايندران عنوان الرسالة: نزع الهيدروجين بالاكسدة للبروبان الى البروبيبن باستخدام حفاز VOx/CaO-

English Abstract

Oxidative dehydrogenation (ODH) of propane is studied with a new vanadium catalyst supported on CaO-γAl2O3 under an oxygen free atmosphere. The catalyst is synthesized with different percentage content of CaO (20, 50 and 100 wt %) using vanadyl acetyl acetonate as precursor. The catalyst was proved to be stable over repeated oxidation and reduction cycles via TPR and TPO. NH3-TPD shows catalyst yield progressive acidity reduction with increase in the wt% of CaO content. TPD kinetics reveals decrease in desorption energy with increase in the level of catalyst acidity. Raman spectroscopy reveals that the catalyst have monovanadate and polyvanadate surface species of VOx with minute crystal particles of V2O5 which is required for good propylene selectivity. FTIR and XRD bands confirms the presence of V2O5, CaO and γ- Al2O3 in the catalyst. EDXS confirms the elemental composition of the three catalyst. The catalysts were evaluated using CREC Fluidized Bed Riser Simulator at 550-640 oC. VOx/CaO-

Item Type: Thesis (Masters)
Subjects: Chemical Engineering
Department: College of Chemicals and Materials > Chemical Engineering
Committee Advisor: Housam, Binous
Committee Members: Shaikh, Razzaq and Ba-Shammakh, Mohammed and Sameer, AlGhamdi
Depositing User: AYANDIRAN AFEES AYODEJI (g201303470)
Date Deposited: 04 Jan 2016 06:41
Last Modified: 01 Nov 2019 16:31
URI: https://eprints.kfupm.edu.sa/id/eprint/139823