Physico-chemical and MAS NMR characterization of mesoporous SAPOs Original Research Article

Mesoporous SAPOs (average pore radius ∼30 Å) have been synthesized using organized micellar arrays of templates. The synthesized SAPOs have been characterized by XRD, TEM, TGA, sorption and MAS NMR techniques. There is no evidence of Si–O–P linkages in these materials. The distribution of silicon around Al ions was studied by calcination at higher temperatures. The possibility of synthesizing mesoporous SAPOs with silicon rich regions, possessing lesser acidity than the zeolites, will open up new avenues for their technical applications.