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Presentation
Investigation of deactivation of transition metal oxide catalysts supported on γ-Al2O3 during catalytic oxidation of some oxygen containing VOCs in a tubular reactor
(2010)
  • Hosein Afshary, University of Tabriz
Abstract

It is necessary to decrease the emission of Volatile organic compound ( VOCs ) to air and among of all destructive techniques used for decreasing these compounds, Catalytic Oxidation is considered a suitable technique but deactivation of catalysts through catalytic processes is one of the major problems and most be studied. In this Project, at First, gamma alumina supported metal oxide catalysts were made and also industrial Pt catalyst was prepared. Then structure of these catalysts was studied using XRD, SEM and FT-IR techniques. These techniques approved the nanostructure of catalysts. The amount of supported metals in each catalyst was determined by ICP-AES technique. The gas phase catalytic conversion of ethyl acetate, benzyl alcohol and isopropanol (from main VOCs and air-pollutants) was investigated on mentioned nanostructure catalysts and effective parameters on catalytic conversion efficiency such as deactivation, time onstream, effect of transition metal and etc. in addition the effect of catalyst deactivation on selectivity for total combustion was studied with analysis of combustion products using GC and GC-MS. The results showed that the deactivation decreased conversion and selectivity of catalysts. The results of testing the two catalysts (Mn and Cr) were compared with the result of testing the Pt catalyst. Among theme the Mn catalyst distinguished that was suitable for removing of ethyl acetate and Cr catalyst was suitable for oxidation of isopropanol. For oxidation of benzyl alcohol both of catalysts has suitable activity and we can use both of theme.

Keywords
  • Catalytic Oxidation,
  • catalyst deactivation,
  • XRD,
  • gamma alumina,
  • VOC
Publication Date
Winter February, 2010
Citation Information
Hosein Afshary. "Investigation of deactivation of transition metal oxide catalysts supported on γ-Al2O3 during catalytic oxidation of some oxygen containing VOCs in a tubular reactor" (2010)
Available at: http://works.bepress.com/hosein_afshary/3/