Premium
Oxidative dehydrogenation of ethyl alcohol over vanadium pentoxide supported on magnesia
Author(s) -
Said Abd ElAziz A.,
Abd ElWahab Mohamed M. M.
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280630111
Subject(s) - dehydrogenation , calcination , pentoxide , spinel , vanadium , catalysis , inorganic chemistry , magnesium , acetaldehyde , chemistry , methanol , alcohol , selectivity , yield (engineering) , materials science , ethanol , organic chemistry , metallurgy
The catalytic dehydrogenation of ethyl alcohol on vanadium pentoxide supported on magnesia was studied in a flow system. The catalysts were characterised by DTA, X‐ray, surface area and electrical conductivity measurements. The results revealed that the yield of acetaldehyde is strongly affected by the nature of compounds formed as a result of the interaction between MgO and V 2 O 5 . The Mg 3 V 2 O 8 formed at a calcination temperature of 550°C is the most active and selective catalyst. The activity of this spinel was correlated with the creation holes and the position of the Fermi potential. On the other hand, the catalyst calcined at 650°C was accompanied by the formation of an MgV 2 O 6 spinel, which exhibited low activity and low selectivity.