Progress in catalytic ignition fabrication, modeling and infrastructure : (part 1) catalytic ignition studies.
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2014-02-01
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Abstract:Platinum has been recognized as a viable combustion catalyst for use in transportation
engines operating at fuel-lean conditions. Its change in electrical resistance with temperature
has been used to measure light-off temperatures and rates of heat generation for various fuel-oxygen mixtures at the University of Idaho. In an attempt to maximize the surface area for
these reactions to occur, platinum-coated nanosprings have been manufactured. A reliable
method of determining an effective temperature-dependent temperature coefficient of
resistance (α(T)) for the nanosprings assembly has been developed and verified using pure
platinum. Measured values of α(T) for platinum were matched against literature data at 373
and 1100 K. A linear fit was assumed for the gap between these temperatures; measurements
made with platinum at intermediate temperatures were in good agreement. Using the same
methodology, α(T) for the nanosprings assembly will be determined, which will allow for
further research of the nanosprings in catalytic combustion.
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