skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Improved catalyst materials and emission control systems. CRADA final report for CRADA Number ORNL 92-0115

Abstract

The overall goal of this CRADA was the improvement of performance and/or development of alternate systems for conventional fuel, flex-fuel, and alternate fuel vehicles in order to meet stringent future emission standards. The objectives had three major thrusts: (1) the characterization of the structural and chemical evolution of the precious metals and washcoat during aging under bench flow reactor, engine dynamometer, and vehicle conditions; (2) the correlation of measured catalyst performance and degradation over time with details of microstructural changes under bench flow reactor and engine dynamometer conditions; and (3) the simulation and testing of an in-cylinder catalyst system to determine the effect on emissions of a single-cylinder engine. Catalyst formulations for both gasoline and natural gas applications were studied. The emission testing and structural characterization were performed on alternate formulations and processing variables in order to evaluate the relative conversion efficiency, lifetime, and stability. The aging parameters were correlated with the evolving structure and properties of the tested catalytic converters. A major portion of the second thrust area was the construction and validation of both the bench flow reactor and engine dynamometer test facility and the identification of deactivation/regeneration mechanisms associated with alternative fuels relative to those for conventionalmore » fuel. A number of microstructural changes were identified that could contribute to the deactivation of the catalyst during aging. The stability of several catalyst formulations and alternate processing procedures relative to these microstructural changes and changes in conversion efficiency and lifetime were studied.« less

Authors:
; ; ;  [1]; ; ;  [2]
  1. Oak Ridge National Lab., TN (United States)
  2. Delphi Automotive Systems, Flint, MI (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
432897
Report Number(s):
ORNL/M-5818
ON: DE97002945; CRN: C/ORNL--92-0115; TRN: AHC29704%%12
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: Sep 1996
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; CATALYTIC CONVERTERS; CATALYSTS; PROGRESS REPORT; AIR POLLUTION CONTROL; AUTOMOBILES; GASOLINE; NATURAL GAS; SERVICE LIFE; MORPHOLOGICAL CHANGES; MATERIALS TESTING; ALUMINIUM OXIDES; CERIUM OXIDES; PLATINUM; RHODIUM; PALLADIUM

Citation Formats

Kenik, E A, More, K L, Domingo, N, Storey, J M, LaBarge, W, Beckmeyer, R F, and Theis, J R. Improved catalyst materials and emission control systems. CRADA final report for CRADA Number ORNL 92-0115. United States: N. p., 1996. Web. doi:10.2172/432897.
Kenik, E A, More, K L, Domingo, N, Storey, J M, LaBarge, W, Beckmeyer, R F, & Theis, J R. Improved catalyst materials and emission control systems. CRADA final report for CRADA Number ORNL 92-0115. United States. https://doi.org/10.2172/432897
Kenik, E A, More, K L, Domingo, N, Storey, J M, LaBarge, W, Beckmeyer, R F, and Theis, J R. 1996. "Improved catalyst materials and emission control systems. CRADA final report for CRADA Number ORNL 92-0115". United States. https://doi.org/10.2172/432897. https://www.osti.gov/servlets/purl/432897.
@article{osti_432897,
title = {Improved catalyst materials and emission control systems. CRADA final report for CRADA Number ORNL 92-0115},
author = {Kenik, E A and More, K L and Domingo, N and Storey, J M and LaBarge, W and Beckmeyer, R F and Theis, J R},
abstractNote = {The overall goal of this CRADA was the improvement of performance and/or development of alternate systems for conventional fuel, flex-fuel, and alternate fuel vehicles in order to meet stringent future emission standards. The objectives had three major thrusts: (1) the characterization of the structural and chemical evolution of the precious metals and washcoat during aging under bench flow reactor, engine dynamometer, and vehicle conditions; (2) the correlation of measured catalyst performance and degradation over time with details of microstructural changes under bench flow reactor and engine dynamometer conditions; and (3) the simulation and testing of an in-cylinder catalyst system to determine the effect on emissions of a single-cylinder engine. Catalyst formulations for both gasoline and natural gas applications were studied. The emission testing and structural characterization were performed on alternate formulations and processing variables in order to evaluate the relative conversion efficiency, lifetime, and stability. The aging parameters were correlated with the evolving structure and properties of the tested catalytic converters. A major portion of the second thrust area was the construction and validation of both the bench flow reactor and engine dynamometer test facility and the identification of deactivation/regeneration mechanisms associated with alternative fuels relative to those for conventional fuel. A number of microstructural changes were identified that could contribute to the deactivation of the catalyst during aging. The stability of several catalyst formulations and alternate processing procedures relative to these microstructural changes and changes in conversion efficiency and lifetime were studied.},
doi = {10.2172/432897},
url = {https://www.osti.gov/biblio/432897}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Sep 01 00:00:00 EDT 1996},
month = {Sun Sep 01 00:00:00 EDT 1996}
}