Abstract
Publisher Summary This chapter discusses the synthesis and properties of SnAlPO-5. Despite an invariant chemical composition, the AlPO 4 family of molecular sieves forms several dozen different types of porous crystalline structures. The number of new phosphate molecular sieves is growing very fast because of relatively facile isomorphous substitution of the framework P and Al for other elements. Almost twenty various elements have been reported as components of the framework positions in the phosphate molecular sieves. The presence of the introduced elements affects the structure and the properties of molecular sieves. The valency of the elements can cause a charge imbalance in the lattice and subsequently can result in ion-exchange properties. There are only scarce reports on the substitution of tin into the AlPO 4 molecular sieves. The framework charge balance of AlPO 4 system can be retained if tin is substituted for both Al and P tetrahedra.
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