Low angle x-ray characterization of catalyst porosity
EMSL Project ID
2127a
Abstract
The objective of this research is to improve the scientific and technical understanding of plasma-assisted catalysis (PAC) aftertreatment for heavy-duty diesel engines to meet the proposed EPA emissions targets set for the year 2007. PNNL will evaluate non-thermal plasma systems for the reduction of NOx to nitrogen from exhaust streams that are typical of those produced from a heavy-duty diesel engine. The research tasks will focus on three general areas including high-temperature reactor design, catalyst development, and mechanistic understanding (please see attached Statement of Work for further detail). Some of the subtasks to be performed include:? Catalyst Development: In addition to investigating materials cited in the literature, a series of metal oxides on dielectric substrates will be synthesized and evaluated. Physical and chemical properties of the materials will be evaluated and the role of these properties on NOx reduction will be investigated.? Catalyst Characterization: The nature and quantity of active sites on unused and used catalysts will be probed using techniques such as temperature programmed characterization, x-ray diffraction and x-ray photoelectron spectroscopy.
Project Details
Project type
Exploratory Research
Start Date
2004-01-08
End Date
2006-11-13
Status
Closed
Released Data Link
Team
Principal Investigator