Post-combustion catalysts
May 10, 2015. 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 3884837 Decomposing nitrogen oxides with nickel-iron-chromium catalysts Metal oxide catalytic compositions having perovskite crystal structures and containing metals of the platinum group Process for preparing mixed metal oxide catalysts Method for preparing rare earth metal catalysts with honeycomb-like alloy supports and catalysts obtained thereby Catalyst for purifing exhaust gases Heat-resistant noble metal catalyst and method of producing the same Combustion of liquid hydrocarbons Patent #: 4998876 InventorsAssigneeApplicationNo. 438873 filed on 05/10/1995US Classes:423/213.5, Group VIII element423/213.2, Utilizing as solid sorbent, catalyst, or reactant a material containing a transition element502/303, Lanthanum502/324, Of manganese502/328, And Group II metal containing (i.e., alkaline earth, Be, Mg, Zn, Cd or Hg)502/525PEROVSKITEExaminersPrimary: Straub, Gary P.Attorney, Agent or FirmForeign Patent References
International ClassB01J 008/02Foreign Application Priority Data1990-07-25 FRAbstractThe invention relates to catalysts for the treatment of combustion gases. The catalysts include an active phase of the perovskite having the general formula: Lx L'1-x My M'z $c;1-y-z O3, wherein L is an element selected from lanthanides and rare earths, L' is an element selected from a group consisting of Sr, Ca, Ba, Ce, K, Bi, Rb or Na; M is a transition metal selected from a group consisting of Cr, Mn, Fe, Co, Ni and Cu; M' is at least one metal selected from a group consisting of Pt, Ru, Pd, Rh; $c; is a cationic lacuna; 0<x<0.5, 0.85<yࣘ1, 0ࣘz<0.08 with 0.85<y+zࣘ1. The catalysts of the invention are particularly useful for purifying exhaust gas from diesel engines, particularly for the removal of soot.Field of SearchMixture is exhaust from internal-combustion engineUtilizing as solid sorbent, catalyst, or reactant a material containing a transition element Group VIII element Utilizing solid sorbent, catalyst, or reactant Metal, metal oxide or metal hydroxide Raney type Of lanthanide series (i.e., atomic number 57 to 71 inclusive) PEROVSKITE Lanthanum Of manganese And Group II metal containing (i.e., alkaline earth, Be, Mg, Zn, Cd or Hg) |
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