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Title: Zeolite-based SCR catalysts and their use in diesel engine emission treatment

A catalyst comprising a zeolite loaded with copper ions and at least one trivalent metal ion other than Al.sup.+3, wherein the catalyst decreases NO.sub.x emissions in diesel exhaust. The trivalent metal ions are selected from, for example, trivalent transition metal ions, trivalent main group metal ions, and/or trivalent lanthanide metal ions. In particular embodiments, the catalysts are selected from Cu--Fe-ZSM5, Cu--La-ZSM-5, Fe--Cu--La-ZSM5, Cu--Sc-ZSM-5, and Cu--In-ZSM5. The catalysts are placed on refractory support materials and incorporated into catalytic converters.
Inventors:
;
Issue Date:
OSTI Identifier:
1174199
Assignee:
UT-Battelle, LLC (Oak Ridge, TN) ORO
Patent Number(s):
8,987,161
Application Number:
12/855,794
Contract Number:
AC05-00OR22725
Resource Relation:
Patent File Date: 2010 Aug 13
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Works referenced in this record:

The development of a model capable of predicting diesel lean NOx catalyst performance under transient conditions
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Cu–ZSM-5 (Si/Al=66), Cu–Fe–S-1 (Si/Fe=66) and Cu–S-1 catalysts for NO decomposition: preparation, analytical characterization and catalytic activity
journal, August 1999
  • Dossi, Carlo; Fusi, Achille; Recchia, Sandro
  • Microporous and Mesoporous Materials, Vol. 30, Issue 1, p. 165-175
  • DOI: 10.1016/S1387-1811(99)00020-7