Search for dissertations about: "ceria"
Showing result 21 - 25 of 56 swedish dissertations containing the word ceria.
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21. CO oxidation over platinum-ceria catalysts -- Structural dynamics and reaction mechanisms
Abstract : Catalytic oxidation of carbon monoxide (CO) continues to be important due to its wide applicability in emission control, in-door air cleaning, fuel cell efficiency enhancement, chemical feedstocks purification etc. The transportation sector emits most of the CO emissions. READ MORE
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22. Ceria-based Nanostructured Materials for Low-Temperature Solid Oxide Fuel Cells
Abstract : As one of the most efficient and environmentally benign energy conversion devices, solid oxide fuel cells (SOFC) have attracted much attention in recent years. Conventional SOFC with yttria-stabilized zirconia as electrolyte require high operation temperature (800-1000 °C), which causes significant problems like material degradation, as well as other technological complications and economic barrier for wider applications. READ MORE
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23. Ceria-based nanocomposite electrolyte for low-temperature solid oxide fuel cells
Abstract : Solid oxide fuel cells (SOFCs) have attracted much attention because of their potential of providing an efficient, environmentally benign, and fuel-flexible power generation system for both small power units and for large scale power plants. However, conventional SOFCs with yttria-stabilized zirconia (YSZ) electrolyte require high operation temperature (800-1000°C), which presents material degradation problems, as well as other technological complications and economic obstacles. READ MORE
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24. Application of Rare-Earth Doped Ceria and Natural Minerals for Solid Oxide Fuel Cells
Abstract : Although solid oxide fuel cell (SOFC) technology exhibits considerable advantages as compared to other energy conversion devices, e.g. high efficiency, low emission and fuel flexibility, its high operating temperature leads to rapid component degradation and has thus hampered commercialization. READ MORE
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25. Dynamics in Ceria and Related Materials from Molecular Dynamics and Lattice Dynamics
Abstract : In discussions of heterogeneous catalysis and other surface-related phenomena, the dynamical properties of the catalytic material are often neglected, even at elevated temperatures. An example is the three-way catalyst (TWC), used for treatment of exhaust gases from combustion engines operating at several hundred degrees Celsius. READ MORE