Sökning: "NSR catalyst"
Hittade 4 avhandlingar innehållade orden NSR catalyst.
Sammanfattning : Emissions of nitrogen oxides (NOX) formed during the burning process in internal combustion engines is a major contributor to global air pollutions. One effective way to reduce NOX in lean environments, i.e. oxygen excess is selective catalytic reduction with ammonia (NH3-SCR). LÄS MER
2. Studies of a Heavy-Duty Diesel Aftertreatment System Based on the NOX Storage and Reduction TechnologyDetta är en avhandling från Department of Chemical Engineering, Lund University
Sammanfattning : The legislative limits for NOX emissions in the exhaust gas from heavy-duty diesel engines will be decreased in the European Union from today 3.5 g/kWh (Euro IV) to 2.0 g/kWh in 2008 (Euro V). In the USA and Japan a similar trend can be seen. LÄS MER
3. Kinetic Studies of NOx Storage and Reduction Catalysts - Flow Reactor Experiments and Microkinetic ModelingDetta är en avhandling från Department of Chemical Engineering, Lund University
Sammanfattning : The NOx storage and reduction (NSR) technology is a promising technique to reduce NOx during oxygen excess e.g. in lean burn engine exhaust. A typical NSR catalyst consists of the following components: precious metals, such as platinum, palladium or rhodium, a storage component, usually barium, and a high surface area support, such as γ-alumina. LÄS MER
4. NOx Storage and Reduction Catalysts. Reduction with Hydrogen and the Influence of Water and Carbon DioxideDetta är en avhandling från Department of Chemical Engineering, Lund University
Sammanfattning : Environmental concern has increased over the past several years and resulted in stringent emission legislation on NOx, CO, and hydrocarbon emissions from automobile exhausts. Moreover, the demands to improve the fuel efficiency of engines and to lower the CO2 emissions have increased, and a way to meet this is by using lean burn engines which operate with oxygen excess. LÄS MER