preparing a reaction mixture comprising sources of alumina, phosphorus, and, optionally, silica and further comprising at least one first organic directing agent for directing the synthesis of an AFX framework type molecular sieve and {HEAD ~ at least one second organic directing agent} for directing the synthesis of {TAIL ~ a CHA framework type molecular sieve} 
preparing a reaction mixture comprising sources of alumina , phosphorus , and , optionally , silica and further comprising at least one first organic directing agent for directing the synthesis of an AFX framework type molecular sieve and { HEAD ~ at least one second organic directing agent } for directing the synthesis of { TAIL ~ a CHA framework type molecular sieve }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL