U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Group VIII metal containing tungsten oxide silica modified zirconia as acid catalyst

Patent 5422327 Issued on June 6, 1995. Estimated Expiration Date: Icon_subject October 26, 2013. 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 References

3755146

3857901

Treating hydrocarbons
Patent #: 4005048
Issued on: 01/25/1977
Inventor: Dowden ,   et al.

Acid catalyzed hydrocarbon conversion processes utilizing a catalyst comprising a Group IVB, VB or VIB metal oxide on an inorganic refractory oxide support
Patent #: 4233139
Issued on: 11/11/1980
Inventor: Murrell ,   et al.

Reforming catalyst comprising iridium, zirconia, and alumina
Patent #: 4240934
Issued on: 12/23/1980
Inventor: Mieville

Methanation catalysts and process for their preparation
Patent #: 4284531
Issued on: 08/18/1981
Inventor: Simpson ,   et al.

Transition metal oxide acid catalysts
Patent #: 4440872
Issued on: 04/03/1984
Inventor: Grenoble ,   et al.

Preparation and use of catalysts comprising mixtures of tungsten oxide and silica on alumina
Patent #: 4692428
Issued on: 09/08/1987
Inventor: Murrell ,   et al.

Hydrotreating catalyst and process of manufacture
Patent #: 4837193
Issued on: 06/06/1989
Inventor: Akizuki ,   et al.

Catalyst for hydrocarbon conversion and conversion process utilizing the same
Patent #: 4918041
Issued on: 04/17/1990
Inventor: Hollstein, et al.

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Inventors

Assignee

Application

No. 143423 filed on 10/26/1993

US Classes:

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)502/261, Platinum group (i.e., Ru, Rh, Pd, Os, Ir or Pt)502/325, Of Group VIII (i.e., iron or platinum group)502/349Of Group IV (i.e., Ti, Zr, Hf, Ge, Sn or Pb)

Examiners

Primary: Achutamurthy, P.

Attorney, Agent or Firm

Foreign Patent References

  • 0495534 EP. 07/13/1992
  • 9000462801 JP. 11/13/1989

International Class

B01J 021/00

Abstract

The invention is directed to a catalyst composition comprising a Group VIII metal, preferably a Group VIII noble metal, and a zirconia support impregnated with silica and tungsten oxide and its use in an isomerization process.

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