Catalytic process for reducing nitrogen oxides to nitrogen
Patent 4085193 Issued on April 18, 1978. Estimated Expiration Date: 
April 18, 1995. 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.
April 18, 1995. 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 ReferencesInventors
AssigneeApplicationNo. 531304 filed on 12/10/1974US Classes:423/239.1, Utilizing solid sorbent, catalyst, or reactant423/351, NITROGEN OR COMPOUND THEREOF (EXCEPT AMMONIUM SALT OF NON-NITROGEN ACID)502/204, And Group VI metal containing (i.e., Cr, Mo, W or Po)502/206, Molybdenum containing502/241, Of Group VII (i.e., Mn, Tc or Re)502/242, Of Group IV (i.e., Ti, Zr, Hf, Ge, Sn or Pb)502/302, Of lanthanide series (i.e., atomic number 57 to 71 inclusive)502/306, And Group II metal containing (i.e., alkaline earth, Be, Mg, Zn, Cd or Hg)502/307, Zinc502/309, Titanium containing502/315, Nickel containing502/316, Iron containing502/318, Copper containing502/324, Of manganese502/328, And Group II metal containing (i.e., alkaline earth, Be, Mg, Zn, Cd or Hg)502/329, Zinc containing502/330, And Group I metal containing (i.e., alkali, Ag, Au or Cu)502/335, Of nickel502/336Of ironExaminersPrimary: Vertiz, O. R.Assistant: Wheelock, Eugene T. Attorney, Agent or FirmInternational ClassesB01J 008/00C01B 021/00 Foreign Application Priority Data1973-12-12 JAAbstractA catalyst compositions for reducing nitrogen oxide comprising, as its chief ingredient, an intimate mixture ofA. titanium (Ti) as component A, withB. at least one metal selected from the group consisting of molybdenum (Mo), tungsten (W), iron (Fe), vanadium (V), nickel (Ni), cobalt (Co), copper (Cu), chromium (Cr), and uranium (U), as component B,in the form of their oxides, and a process for reducing nitrogen oxides to nitrogen, which comprises contacting a gaseous mixture containing nitrogen oxides and molecular oxygen and a reducing gas with aforesaid catalyst compositions at an elevated temperature. |
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