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

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:: Narula, Chaitanya K; Yang, Xiaofan

Issue Date:: 2015-03-24

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

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