Method for preparing a pillared layered oxide material
Patent 5278115 Issued on January 11, 1994. Estimated Expiration Date: 
May 4, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 4, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCrystalline aluminosilicate PSH-3 and its process of preparation Layered metal chalcogenides containing interspathic polymeric chalcogenides Composition of synthetic porous crystalline material, its synthesis and use Patent #: 4954325 InventorsAssigneeApplicationNo. 887811 filed on 05/04/1992US Classes:502/84, And metal, metal oxide, or metal hydroxide423/328.2, Crystalline423/329.1, X-ray diffraction pattern502/242Of Group IV (i.e., Ti, Zr, Hf, Ge, Sn or Pb)ExaminersPrimary: Breneman, R. BruceAttorney, Agent or FirmInternational ClassB01J 021/06AbstractThere is provided a method for preparing a pillared layered material, designated MCM-36, with a characteristic X-ray diffraction pattern. Upon calcination of the swollen, non-pillared form of this material, the layers collapse and condense upon one another in a somewhat disordered fashion to form a non-swellable material. However, when the swollen layered material is intercalated with polymeric oxide pillars, the layer separation is maintained, even after calcination. A combination of tetraethylorthosilicate and zirconium alkoxide is used as a pillaring agent for treating the swollen material. |
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