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Title: Hydrothermally stable, low-temperature NO.sub.x reduction NH.sub.3-SCR catalyst

Patent ·
OSTI ID:1174198
;

A catalyst composition includes a heterobimetallic zeolite characterized by a chabazite structure loaded with copper ions and at least one trivalent metal ion other than Al.sup.3+. The catalyst composition decreases NO.sub.x emissions in diesel exhaust and is suitable for operation in a catalytic converter.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,987,162
Application Number:
13/404,071
OSTI ID:
1174198
Resource Relation:
Patent File Date: 2012 Feb 24
Country of Publication:
United States
Language:
English

References (49)

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Production of light olefins patent February 1985
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Zeolite SSZ-13 and its method of preparation patent October 1985
Activation of zeolites patent June 1986
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Catalytic system for the reducton of nitrogen oxides patent December 1996
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Catalytic converter unit and apparatus patent October 2007
Catalytic converter system for diesel engines patent August 2008
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High porosity honeycomb and method patent October 2008
Catalytic converter and method for manufacturing the same patent August 2009
Copper CHA zeolite catalysts patent October 2009
SCR catalytic converter without NH3 or urea injection patent March 2010
Catalytic converter patent April 2010
Novel Microporous Crystalline Material Comprising A Molecular Sieve Or Zeolite Having An 8-Ring Pore Opening Structure And Methods Of Making And Using Same patent-application October 2008
Chabazite Zeolite Catalysts Having Low Silica to Alumina Ratios patent-application January 2011
Conversion Of Carbohydrates To Hydrocarbons patent-application June 2011
Zeolite-Based Scr Catalysts And Their Use In Diesel Engine Emission Treatment patent-application February 2012
Small Pore Molecular Sieve Supported Copper Catalysts Durable Against Lean/Rich Aging For The Reduction Of Nitrogen Oxides patent-application April 2012

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