Opportunities to explore large OSDA in zeolite synthesis: New routes created from the ITQ lab

In this work we describe the use of some very large organo-cations to make new structures in the Ge/Si/F synthesis space. These inorganic conditions arise from discoveries from the Corma group at ITQ so it is fitting that we honor them in this description. In particular we focus on 3 compositions which have been patented as SSZ-117, 120, 121 and give descriptions of some of the characterizations of them. Each of the 3 has not had a structure solved at the time of this writing. Our characterization and catalysis studies lead us to believe that SSZ-120 and 121 are large pore and SSZ-117 is still not known as it crystallizes in a kind of PRE-form, a layered structure which then moves to a different structure upon removal of the organo-cation. In the case of SSZ-120 and 121, after the initial discoveries with Si, Ge and F follow-up reactions were successful with addition of Al to then produce catalytically active materials. Then we describe a series of experiments where two zeolites are produced together in a synthesis and the crystal types are well enough resolved that we can use EDX studies to identify each and produce subsequent synthesis experiments which then produce ITQ-7 when more Ge-rich and SSZ-55 (ATS) when Ge is reduced. One interesting puzzle here is why the organo-cation has a stronger influence in the synthesis product than F which should still be capable of producing the 4DR needed in the ITQ-7.