Difunctional catalyst useful in wax hydroisomerization and process for preparing it
Patent 5518978 Issued on May 21, 1996. Estimated Expiration Date: 
May 12, 2014. 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 12, 2014. 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 ReferencesOxidation catalyst resistant to sulfation Process for preparing an effective catalyst for n-parafins hydroisomerization Patent #: 5444032 InventorsAssigneeApplicationNo. 241585 filed on 05/12/1994US Classes:502/222, And Group VIII metal containing (i.e., iron or platinum group)502/223, Platinum group (i.e., Ru, Rh, Pd, Os, Ir, Pt)502/242, Of Group IV (i.e., Ti, Zr, Hf, Ge, Sn or Pb)502/258, Of Group VIII (i.e., iron or platinum group)502/262, Platinum or palladium585/750Using metal oxide or hydroxide catalystExaminersPrimary: Achutamurthy, PonnathapuAttorney, Agent or FirmForeign Patent References
International ClassesB01J 021/06B01J 027/043 Foreign Application Priority Data1993-05-12 ITAbstractA difunctional catalyst is disclosed which is constituted by:(a) silica particles partially coated with zirconia, acidified by means of the introduction of sulfate moieties,(b) one or more metal(s) from Group VIIIA.The preparation of said catalyst and its use in wax hydroisomerization are disclosed as well. |
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