... 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,ethylene-benzene ... and thermostability,they can be used as catalytic cracking active component to improve the gasoline octane number, ...