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

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Description

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 ... continued below

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16 p.

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Kenik, E.A.; More, K.L.; Domingo, N.; Storey, J.M.; LaBarge, W.; Beckmeyer, R.F. et al. September 1, 1996.

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Description

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.

Physical Description

16 p.

Notes

OSTI as DE97002945

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  • Other Information: PBD: Sep 1996

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  • Other: DE97002945
  • Report No.: ORNL/M--5818
  • Grant Number: AC05-96OR22464
  • DOI: 10.2172/432897 | External Link
  • Office of Scientific & Technical Information Report Number: 432897
  • Archival Resource Key: ark:/67531/metadc683628

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  • September 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 25, 2016, 6:14 p.m.

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Kenik, E.A.; More, K.L.; Domingo, N.; Storey, J.M.; LaBarge, W.; Beckmeyer, R.F. et al. Improved catalyst materials and emission control systems. CRADA final report for CRADA Number ORNL 92-0115, report, September 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc683628/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.