... ZSM-5 serial zeolites are mainly applied for catalytia cracking, catalytic dewaxing,toluene disproportionation,FCCU. ... ZSM-5 serial zeolites are mainly applied for catalytia cracking, catalytic dewaxing,toluene disproportionation, xylene isomerization ... new excellent technology and catalyst of fixed bed catalytic cracking, the range of the raw stuff of oil refining was extended ...