Some catalytic properties of molybdenum trioxide and dioxide
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MoO3, obtained by decomposition of ammonium molybdate in a stream of nitrogen at 500°, is a catalyst for the dehydration of alcohols. The activation energy for isopropyl alcohol is 13.9 kcal/mole.
MoO2, obtained by reduction of MoO3 with molecular hydrogen at 500°, is a catalyst for the dehydrogenation of alcohols. The activation energy for isopropyl alcohol equals 12.5 kcal/mole.
MoO2 chemisorbs nitrogen at 500° and is thus completely deactivated as regards dehydrogenation of alcohol. Treatment of the inactive catalyst with hydrogen at 500° partially restores the activity of the catalyst as a result of desorption of the nitrogen as ammonia.
At temperatures of 400–500°, MoO3 and MoO2 produce dehydrogenation of cyclohexane to a slight extent.
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- Some catalytic properties of molybdenum trioxide and dioxide
Bulletin of the Academy of Sciences of the USSR, Division of chemical science
Volume 8, Issue 11 , pp 1804-1810
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