SSZ-26 and SSZ-33: Two Molecular Sieves with Intersecting 10- and 12-Ring Pores.
The framework structures of two closely related molecular sieves, SSZ-26 and SSZ-33, are described. These materials possess a previously missing but desired structural feature in a group of industrially significant zeolites. They contain a three-dimensional pore system that provides access to the crystal interior through both 10- and 12-rings. This property is a consequence of the organic structure-directing agents used in the synthesis of these materials. These materials are examples of the purposeful design of a micropore architecture. Both SSZ-26 and SSZ-33 contain the 4=4-1 building unit that had been previously found only in natural zeolites.
Lobo
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Pan
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Chan
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Li
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Medrud
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RC
Zones
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Crozier
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Davis
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