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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:
1281139
Assignee:
UT-BATTELLE, LLC (Oak Ridge, TN) ORNL
Patent Number(s):
9,403,156
Application Number:
14/662,946
Contract Number:
AC05-00OR22725
Resource Relation:
Patent File Date: 2015 Mar 19
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING

Works referenced in this record:

The development of a model capable of predicting diesel lean NOx catalyst performance under transient conditions
journal, September 1996
  • Ansell, G. P.; Bennett, P. S.; Cox, J. P.
  • Applied Catalysis B: Environmental, Vol. 10, Issue 1-3, p. 183-201
  • DOI: 10.1016/0926-3373(96)00030-6