On the dehydrogenation reaction of n‐butane with the deactivation of alumina‐chromia catalyst

Abstract An experimental study on the dehydrogenation reaction of n‐butane to n‐butene with alumina‐chromia catalyst has been performed using a differential reactor. N‐butene produced and coke deposit on the catalyst were continuously measured and the mechanisms of the reactions of dehydrogenation of n‐butane and coke deposition have been investigated. According to the assumptions that there are two types of active sites effective for the dehydrogenation reaction, Lewis acid site and Brönsted acid site, and that the coke deposition takes place only at Lewis acid sites, the rate equations of these reactions have been obtained.