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Emission Control Catalyst Derived from Mesoporous Molecular Sieves$

Published online by Cambridge University Press:  10 February 2011

Partha P. Paul ,
Michael A. Miller ,
Martin J. Heimrich  and
Stuart T. Schwab
Partha P. Paul
Affiliation:
Materials Engineering Department, Southwest Research Institute, San Antonio, Texas.
Michael A. Miller
Affiliation:
Materials Engineering Department, Southwest Research Institute, San Antonio, Texas.
Martin J. Heimrich
Affiliation:
Materials Engineering Department, Southwest Research Institute, San Antonio, Texas.
Stuart T. Schwab
Affiliation:
Materials Engineering Department, Southwest Research Institute, San Antonio, Texas.
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Abstract

A lean NOx catalyst is needed to control NOx emissions generated by oxygen-rich combustion processes to obtain higher fuel economy. We have developed such a catalyst using modified mesoporous molecular sieves (MCM-41). An iron(II)-complex impregnated MCM-41 has been synthesized which has been further treated with [Pd(NH3)4]Cl2. This treatment resulted in further exchange of Na+ ions of the molecular sieves with Pd(NH3)42+ thus forming Catalyst A. The catalytic activity towards NOx, CO and HC was studied using simulated exhaust gas, as well as engine exhaust gas.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 431: Symposium P – Microporous and Macroporous Materials , 1996 , 117
Copyright
Copyright © Materials Research Society 1996

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Footnotes

$

Patent Pending.

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