When the number of side chain carbon is over 3, these alkylaromatics are prone to side chain cracking and benzene is mainly formed by dealkylation.

• 当烷基苯取代基碳原子数在3以上时，烷基苯裂化反应性能随着烷基侧链碳原子数的增加而增加，烷基侧链含有叔碳原子则更易裂化，苯的生成主要来自脱烷基反应；