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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)4 2+ thus forming Catalyst A. The catalytic activity towards NOx , CO and HC was studied using simulated exhaust gas, as well as engine exhaust gas.

Information

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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