Results 51 to 60 of about 1,122 (183)

Efeito da adição de óxido de cobalto na sinterização e propriedades elétricas da cerâmica Ce0,8Gd0,2O1,9 obtida a partir de nanopós

Cerâmica, 2014
Células a combustível de óxido sólido é uma tecnologia promissora de geração de energia limpa e utilizam zircônia estabilizada com ítria como eletrólito.
L. A. Villas-Bôas, D. P. F. de Souza
doaj   +1 more source

Moagem de pós de carbeto de silício em moinho planetário Planetary milling of silicon carbide powders

Cerâmica, 2005
Pó de alfa carbeto de silício (alfa-SiC) foi cominuído em moinho planetário durante os períodos de tempo de ½, 2, 4 e 6 h. A velocidade de rotação foi de 300 rpm, o meio de moagem foi álcool isopropílico e os corpos moedores foram esferas de ...
M. A. P. dos Santos, C. A. Costa
doaj   +1 more source

Investigation of the Nickel‐Ceria Synergy for Efficient CO2 Methanation Under Nonthermal Plasma Activation

ChemCatChem, Volume 18, Issue 14, 29 July 2026.
Nickel‐ceria based catalysts displayed high performances for the methanation reaction achieving both high selectivity and conversion under non‐thermal plasma. These performances arose from the formation of the Ce1‐xNixO2‐γ solid solution promoted by the use of sol‐gel based synthesis and was investigated by XPS, TEM, TPR and raman.
Nathan Cordier(s), Christine Canaff, Nadia Guignard, Anthony Le Valant, Catherine Batiot‐Dupeyrat, Elodie Fourré   +5 more
wiley   +1 more source

Advances and Challenges in Functional Abrasive Design for Chemical Mechanical Polishing of Semiconductors and in Optical Manufacturing

Interdisciplinary Materials, Volume 5, Issue 4, Page 506-550, July 2026.
This review summarizes recent advances in chemical mechanical polishing abrasives based on CeO2, SiO2, Al2O3, and emerging nanomaterials, highlighting how structural engineering and interfacial chemistry govern material removal and surface quality. Mechanism‐driven abrasive design is identified as a key pathway toward high selectivity, low damage, and ...
Wenqi Tang, Zean Teng, Fang Luo, Xinlong Zhang, Biao Ran, Yonghong Qin, Jiyi Zhu, Yatao Cui, Xuezi Tan, Zihan Xu, Chaopeng Fu, Jiao Zhang   +11 more
wiley   +1 more source

Compositional and Fabrication Cycle Optimization of Ceria-Zirconia-Supported Mo-Based Catalysts for NH₃-SCR NO_x Reduction

Inorganics
The reduction of nitrogen oxides (NOx), critical pollutants from stationary to mobile sources, mainly relies on the selective catalytic reduction (NH3-SCR) method, employing ammonia to reduce NOx into nitrogen and water.
Luca Spiridigliozzi, Viviana Monfreda, Serena Esposito, Olimpia Tammaro, Nicola Blangetti, Fabio Alessandro Deorsola, Gianfranco Dell’Agli   +6 more
doaj   +1 more source

Hidden Complexity in Stress‐Induced Phase Transformations of CeO2–ZrO2 Ceramics

Journal of the American Ceramic Society, Volume 109, Issue 7, July 2026.
Using atomistic simulations, this study reveals that the tetragonal‐to‐monoclinic transformation in zirconia is more complex than previously thought. While pure bulk zirconia often becomes trapped in metastable phases, ceria doping and free surfaces facilitate the transformation into the stable phase, aligning with experimental data.
Gaël Huynh, Jin‐Yu Zhang, Tristan Albaret, David Rodney   +3 more
wiley   +1 more source

Alloying Cu, Fe, and Co in Ni/YSZ Electrodes for High‐Temperature CO2 Electrolysis: Impact on TPB Density, Activity, and Carbon Deposition Resistance

Carbon Energy, Volume 8, Issue 6, June 2026.
Systematic alloying of Ni with Cu, Fe, and Co in Ni/YSZ electrodes modifies active site density up to 43%, decreases activation energies by up to 44%, and reduces carbon deposition fourfold. Cu–Ni alloy is among the most promising alloy catalysts for electrochemical CO2 reduction in SOECs.
Min Jun Oh, Sooin Lee, Jeeho Hong, Kyung Joong Yoon, Ho‐Il Ji, Ji‐Won Son, Jong‐Ho Lee, Kyeounghak Kim, Jongsup Hong, Sungeun Yang   +9 more
wiley   +1 more source

Ion Beam Sputtering Deposition to Prepare Pt/ZrO2 Active Layer for Hydrogen Evolution and Oxidation Reaction

ChemElectroChem, Volume 13, Issue 9, 5 May 2026.
Pt@ZrO2 thin films are fabricated by ion beam sputtering as compact, binder‐free electrodes with low Pt loading (0.0475 mg·cm−2). The intimate mixing between the noble metal and the ceramic support enhances intrinsic catalytic activity toward alkaline hydrogen evolution, allowing a significant reduction in precious metal loading while maintaining ...
Simone Minelli, Manuel Iozzia, Claudio Piazzoni, Alberto Vertova, Cristina Lenardi, Alessandro Minguzzi   +5 more
wiley   +1 more source

Impact Resistance of Yttria- and Ceria-Doped Zirconia Ceramics in Relation to Their Tetragonal-to-Monoclinic Transformation Ability

Ceramics
In this work, the impact resistance of three zirconia ceramics was investigated: two yttria-stabilized zirconia (3Y-TZP and 1.5Y-TZP) and a ceria-stabilized-zirconia (Ce-TZP) composite.
Mohamed Imariouane, Malika Saâdaoui, Norberto Labrador, Helen Reveron, Jérôme Chevalier   +4 more
doaj   +1 more source

Template-directed synthesis and characterization of microstructured ceramic Ce/ZrO2@SiO2 composite tubes

Beilstein Journal of Nanotechnology, 2014
An exo-templating synthesis process using polymeric fibers and inorganic sol particles deposited onto structured one-dimensional objects is presented.
Jörg J. Schneider, Meike Naumann
doaj   +1 more source