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                                       Details for article 84 of 143 found articles
 
 
  OXIDATIVE DEHYDROGENATION OF n-BUTANE OVER A MgO-SUPPORTED MAGNESIUM VANADATE CATALYST
 
 
Title: OXIDATIVE DEHYDROGENATION OF n-BUTANE OVER A MgO-SUPPORTED MAGNESIUM VANADATE CATALYST
Author: I.-C. Marcu
Adriana Urdă
I. Săndulescu
Appeared in: Analele Universitatii Bucuresti. Chimie
Paging: Volume XIV (2005) nr. I-II pages 57-63
Year: 2005
Contents: The catalytic and non-catalytic oxidative dehydrogenation of n-butane wereinvestigated. It was found that in the non-catalyzed reaction the n-butane conversion not exceeds4% at 550°C and the selectivities to butenes are significant only at temperatures below 450°C.Oxidative dehydrogenation was examined in the presence of mixed V-Mg-oxide catalystcomprising 24.5% V2O5. It was observed that the catalyst is active and quite selective forbutenes and butadiene at reaction temperatures in the range 450 – 550°C. The selectivity tobutenes decreased and the selectivity to butadiene increased with increasing conversion at550°C. The low apparent activation energy observed (7 kcal.mol-1), suggests that the ratelimitingstep of the reaction is the reoxidation of the catalytic site by diffusion of the latticeoxygen or directly by gas phase oxygen.
Publisher: Ars Docendi Publishing House (provided by DOAJ)
Source file: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details for article 84 of 143 found articles
 
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