Abstract
Vapor phase condensation by dehydration of paraldehyde and formaldehyde (molar ratio 1: 3) through Li3CO3-silica gel catalyst for formation of acrolein has been investigated with reaction temperature range of 300-450°c and space velocity (SV) (of formaldehyde) at 3-24 mM/hr./g, catalyst. The result indicated that the maximum yield (to the feed passed) of 52-53% was obtainable with SV=6 mM/hr./g, catalyst and reaction temperature at 350°c. The side reaction product showed a considerable decrease with an increase of SV, there was practically no formation in 2.5 hrs, after the reaction at 12 mM/hr./g, catalyst (reaction temperature range at 360-400°c), and the yield under this condition was 44.6%.
