Dehydrogenation of ethylbenzene to styrene
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Kinetic equations and related parameters for the main and side reactions in the dehydrogenation of ethylbenzene to styrene
Main reaction: C2H4 + C6H6 = C6H5C2H5 – a hydrocarbonation reaction that produces ethylbenzene.
C6H4(C2H5)2 + C6H6 = 2C6H5C2H5 – a retrohydrogenation reaction that also produces ethylbenzene.
Main side reactions:
C6H5C2H5 + C2H4 = C6H4(C2H5)2 – a hydrocarbonation reaction that produces diethylbenzene.
C6H4(C2H5)2 + C2H4 = C6H3(C2H5)3 – a hydrocarbonation reaction that produces polyethylbenzene.
C3H6 + C6H6 = C6H5C3H7 – a hydrocarbonation reaction that produces propylbenzene.
C6H5C2H5 = C6H4(CH3)2 – an isomerization reaction that produces xylene.
n→n polymerization of olefins yields non-aromatic compounds.
C6H5C2H5 = C6H5C2H3 + H2 – a dehydrogenation reaction that produces styrene and hydrogen. (Note: This is a catalytic dehydrogenation reaction under negative pressure in the presence of superheated steam.)
Main side reactions:
C6H5C2H5 = C6H6 + C2H4 – a dealkylation reaction that produces benzene.
C6H5C2H5 + H2 = C6H5CH3 + CH4 – a dealkylation reaction that produces toluene and methane.
C6H5C2H5 = 8C + 5H2 – high-temperature carbonization that produces coke.
8C + 16H2O = 8CO2 + 16H2 – combustion that produces carbon dioxide
C6H4(C2H5)2 + C6H6 = 2C6H5C2H5 – a retrohydrogenation reaction that also produces ethylbenzene.
Main side reactions:
C6H5C2H5 + C2H4 = C6H4(C2H5)2 – a hydrocarbonation reaction that produces diethylbenzene.
C6H4(C2H5)2 + C2H4 = C6H3(C2H5)3 – a hydrocarbonation reaction that produces polyethylbenzene.
C3H6 + C6H6 = C6H5C3H7 – a hydrocarbonation reaction that produces propylbenzene.
C6H5C2H5 = C6H4(CH3)2 – an isomerization reaction that produces xylene.
n→n polymerization of olefins yields non-aromatic compounds.
C6H5C2H5 = C6H5C2H3 + H2 – a dehydrogenation reaction that produces styrene and hydrogen. (Note: This is a catalytic dehydrogenation reaction under negative pressure in the presence of superheated steam.)
Main side reactions:
C6H5C2H5 = C6H6 + C2H4 – a dealkylation reaction that produces benzene.
C6H5C2H5 + H2 = C6H5CH3 + CH4 – a dealkylation reaction that produces toluene and methane.
C6H5C2H5 = 8C + 5H2 – high-temperature carbonization that produces coke.
8C + 16H2O = 8CO2 + 16H2 – combustion that produces carbon dioxide