Abstract
This chapter discusses the cotemplating roles of amines and amides admixed with alkylammonium salts for the stabilization of new AlPO 4 -n topologies. Two different aluminophosphate structures are synthesized in aqueous media using as main template methylamine (MA), directly added, or generated in situ from methylformamide (MF). Both involve novel AlPO 4 -n topologies that undergo structural transformations upon template removal, yielding above 350°C microporous thermostable materials with interesting properties. Tetraalkylammonium (TEA) cations are used optionally as cotemplates along with MA. Only nonprotonated MA is found incorporated into the pore volume. TEA appeared to stabilize one of the phases during nucleation and growth processes.
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