{HEAD ~ The catalyst} 1, wherein CR2 O3 and {TAIL ~ Al2 O3} are directly deposited on the Zn ZSM 5 zeolite or the Zn ZSM 5 zeolite/asbestos 
wherein
{ HEAD ~ The catalyst } 1 , wherein CR2 O3 and { TAIL ~ Al2 O3 } are directly deposited on the Zn ZSM 5 zeolite or the Zn ZSM 5 zeolite / asbestos
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH