Gary Norman Long

Molecular Sieve Effects in Carboniogenic Reactions Catalyzed by Silicoaluminophosphate Molecular Sieves

Several novel silicoaluminophosphate (SAPO) molecular sieves representing a broad variety of crystal structures and pore sizes ranging from small to large were evaluated for catalytic activity in the reactions of propylene oligomerization and toluene methylation. The medium pore SAPOs −11, −31, −40 and −41, combining features of unique pore structure and mild acidity were outstanding catalysts with high selectivity to gasoline range olefinic products in propylene reactions and high para xylene yields in toluene methylation.