Isabella Nova, Enrico Tronconi: Urea-SCR Technology for deNOx Aftertreatment of Diesel Exhausts
نویسندگان
چکیده
منابع مشابه
“Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts”
The introduction and development of catalytic control for exhaust gas emissions from vehicles has been one of the major technical achievements over the last four decades. A huge number of cars were manufactured during this time that provided society with a high degree of personal mobility and without the continuous development of emissions control technologies the atmospheric pollution derived ...
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Urea/NH3-SCR is presently considered a key technology for the control and abatement of NO emissions from Diesel engines; the presence of a DOC catalyst upstream from the SCR unit warrants significant amounts of NO2 entering the SCR reactors together with NO. In this work new zeolite-based catalysts promoted by Fe and by Cu were investigated: reactivity tests were performed to allow a quantitati...
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In a proof-of-concept study we demonstrate in situ reaction monitoring of DeNO(x)-SCR on proton-conducting zeolites serving as catalyst and gas sensor at the same time. By means of temperature-dependent impedance spectroscopy we found that the thermally induced NH(3) desorption in H-form and in Fe-loaded zeolite H-ZSM-5 follow the same process, while a remarkable difference under DeNO(x)-SCR re...
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ژورنال
عنوان ژورنال: Emission Control Science and Technology
سال: 2015
ISSN: 2199-3629,2199-3637
DOI: 10.1007/s40825-014-0004-5