Search for dissertations about: "Ceria"

Showing result 21 - 25 of 56 swedish dissertations containing the word Ceria.

  2. 21. CO oxidation over platinum-ceria catalysts -- Structural dynamics and reaction mechanisms

    Author : Mengqiao Di; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CO oxidation; Platinum catalysts; EXAFS; XANES; Operando spectroscopy; DRIFTS;

    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

  4. 22. Ceria-based Nanostructured Materials for Low-Temperature Solid Oxide Fuel Cells

    Author : Ying Ma; Mamoun Muhammed; Bin Zhu; Randa Abdel-Karim; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    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

  5. 23. Ceria-based nanocomposite electrolyte for low-temperature solid oxide fuel cells

    Author : Ying Ma; Mamoun Muhammed; Peter Lund; KTH; []
    Keywords : ;

    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

  6. 24. Application of Rare-Earth Doped Ceria and Natural Minerals for Solid Oxide Fuel Cells

    Author : Yanyan Liu; Andrew R. Martin; Wujun Wang; Shanwen Tao; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Low-temperature solid oxide fuel cells; Doped ceria; Material characterizations; Electrochemical performances; Natural minerals; Lågtemperatur fastoxidbränsleceller; Dopade ceriumoxid; Materialkarakteriseringar; Elektrokemiska prestanda; Naturliga mineraler.; Energy Technology; Energiteknik; Teknisk materialvetenskap; Materials Science and Engineering; Chemical Engineering; Kemiteknik;

    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

  7. 25. Dynamics in Ceria and Related Materials from Molecular Dynamics and Lattice Dynamics

    Author : Anders Gotte; Kersti Hermansson; Micael Baudin; Anatoly Belonoshko; Uppsala universitet; []
    Keywords : Inorganic chemistry; molecular dynamics; diffusion; surface dynamics; ionic surfaces; Oorganisk kemi;

    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