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

Abstract

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:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174199
Patent Number(s):
8987161
Application Number:
12/855,794
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Aug 13
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats

Narula, Chaitanya K, and Yang, Xiaofan. Zeolite-based SCR catalysts and their use in diesel engine emission treatment. United States: N. p., 2015. Web.
Narula, Chaitanya K, & Yang, Xiaofan. Zeolite-based SCR catalysts and their use in diesel engine emission treatment. United States.
Narula, Chaitanya K, and Yang, Xiaofan. Tue . "Zeolite-based SCR catalysts and their use in diesel engine emission treatment". United States. https://www.osti.gov/servlets/purl/1174199.
@article{osti_1174199,
title = {Zeolite-based SCR catalysts and their use in diesel engine emission treatment},
author = {Narula, Chaitanya K and Yang, Xiaofan},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {3}
}

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Works referenced in this record:

Extruded Zeolite Catalysts for Lean Exhaust Application
conference, April 2005


The development of a model capable of predicting diesel lean NOx catalyst performance under transient conditions
journal, September 1996


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