Results 21 to 30 of about 1,053 (118)
Cerâmica, 2001 Neste trabalho são destacadas as técnicas de separação e de purificação de terras raras por precipitação fracionada e troca iônica, além das técnicas usualmente utilizadas no controle analítico destes materiais.
C. A. S. Queiroz +3 more
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Mechanical and Electrical Characterization of 8YSZ-ScCeSZ Ceramics
Materials Research, 2023 The effects of small amounts (up to 5 wt.%) of scandia- and ceria-stabilized zirconia on the electrical conductivity, and the elastic modulus and hardness of yttria-stabilized zirconia were investigated by impedance spectroscopy and nanoindentation tests,
T. G. Fujimoto +4 more
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Influence of roughness on initial in vitro response of cells to Al2O3/Ce-TZP nanocomposite
Journal of Asian Ceramic Societies, 2021 Al2O3/Ce-tetragonal zirconia polycrystal (TZP) nanocomposite was synthesized by a colloidal processing route and sintered in air atmosphere. Sandblasting treatment was made to alumina toughened zirconia (ATZ) nanocomposite in order to evaluate the ...
M. Suárez +6 more
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Non‐Noble Metal Nanocatalysts for Hydrogen Evolution
Advanced Science, EarlyView.Recent overviews and latest developments of diverse classes of non‐noble catalysts for application toward high‐performance photocatalysis, thermocatalytic steam reforming, and electrocatalysis. Toward sustainability objectives, several advanced characterization tools in combination with the latest breakthroughs in machine learning for material ...
Lina Jaya Diguna +7 more
wiley +1 more source
Novel Ni/Ce(Ti)ZrO2 Catalysts for Methane Dry Reforming Prepared in Supercritical Alcohol Media
Energies, 2020 To achieve a high activity and coking stability of nickel catalysts in dry reforming of methane, materials comprised of ceria–zirconia doped by Ti were investigated as supports.
Yuliya Bespalko +9 more
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Revealing the Giant Electromechanical Effects in Yttria‐Stabilized Zirconia Single Crystal
Advanced Science, EarlyView.Giant electromechanical responses are uncovered in yttria‐stabilized zirconia single crystal (SC‐YSZ), exhibiting pronounced orientation dependence. The giant electrostriction and piezoelectricity are directly correlated with the long‐range transport kinetics of oxygen vacancies.
Zhuwu Yi +8 more
wiley +1 more source
Orbital: The Electronic Journal of Chemistry, 2011 The myth that gold cannot act as a catalyst has been discarded in view of recent studies, which have demonstrated the high catalytic efficiency of pure nano-gold and supported nano-gold catalysts.
Bashir Dar, Mazahar Farooqui
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Advanced Science, EarlyView.This work demonstrates a design paradigm of phonon‐driven negative‐thermal‐expansion (NTE) flexible framework that exploits the intrinsic lattice flexibility of NTE frameworks to simultaneously suppress thermal expansion and activate oxide‐ion conduction, offering a promising strategy to mitigate TEC mismatch in solid‐state ionic devices.
Xiaohui Li +10 more
wiley +1 more source
Advanced Science, EarlyView.A Sr‐free air electrode for high‐temperature solid oxide cells is designed by independently tailoring electronic conduction, ionic transport, and surface catalysis using complementary Sr‐free phases and infiltrated nanocatalysts. It delivers performance comparable to state‐of‐the‐art Sr‐containing electrodes while completely suppressing Cr‐induced ...
Ji‐eun Won +10 more
wiley +1 more source
Condutores de íons oxigênio: uma breve revisão Oxygen-ion conductors: a brief review
Cerâmica, 2008 São descritas e comparadas as principais características relacionadas com as propriedades de transporte de alguns condutores de íons oxigênio. Os materiais abordados compreendem as soluções sólidas à base de zircônia e de céria, compostos com estrutura ...
E. N. S. Muccillo
doaj +1 more source