Results 61 to 70 of about 66,942 (150)

Comparison of Preparation Methods of Copper Based PGMFree Diesel-Soot Oxidation Catalysts [PDF]

, 2011
CuO-CeO2 systems have been proposed as a promising catalyst for low temperature diesel-soot oxidation. CuO-CeO2 catalysts prepared by various methods were examined for air oxidation of the soot in a semi batch tubular flow reactor. The air oxidation of
V.R. , Bella, R. , Prasad
core   +1 more source

Cerium reduction at the interface between ceria and yttria-stabilised zirconia and implications for interfacial oxygen non-stoichiometry

APL Materials, 2014
Epitaxial CeO2 films with different thickness were grown on Y2O3 stabilised Zirconia substrates. Reduction of cerium ions at the interface between CeO2 films and yttria stabilised zirconia substrates is demonstrated using aberration-corrected scanning ...
Kepeng Song, Herbert Schmid, Vesna Srot, Elisa Gilardi, Giuliano Gregori, Kui Du, Joachim Maier, Peter A. van Aken   +7 more
doaj   +1 more source

Subnanometer Copper Clusters of Five Atoms on Titania Boosting CO2 Conversion to Methane

Small Structures, Volume 7, Issue 9, September 2026.
Supported five‐atom copper clusters (Cu5/TiO2) demonstrate exceptional catalytic performance for CO2 methanation, achieving 100% methane selectivity at 300 °C. Operando X‐ray absorption near‐edge structure (XANES) and DFT calculations reveal a preferred methoxy‐mediated pathway and reversible redox behavior.
Iria R. Arias, Khalil Jori, Shahana Huseyinova, Héctor J. L. Ordóñez, José A. Rodriguez, David Buceta, M. Arturo Lopez‐Quintela, Félix G. Requejo, José M. Ramallo‐López   +8 more
wiley   +1 more source

The Influence of Silica Template Aging Temperature on the Properties and Catalytic Activity of Nanocast Mesoporous Zirconium-Doped Ceria

Crystals
KIT-6 samples were prepared at hydrothermal aging temperatures of 60, 100, and 140 °C, and used as templates for nanocasting of zirconium-doped ceria.
Katarina Mužina, Jakov-Stjepan Pavelić, Filip Car, Filip Brleković, Goran Dražić, Lara Mikac, Gordana Matijašić, Vesna Tomašić, Stanislav Kurajica   +8 more
doaj   +1 more source

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

Surface Acidity Engineering: From Fundamental Insights to Universal Design Rules for Electrocatalytically and Electrically Active Oxides

Advanced Energy Materials, Volume 16, Issue 31, 19 August 2026.
This comprehensive review highlights surface acidity engineering as a versatile strategy to modulate surface charge and boost catalytic performance in functional oxides. It explores recent advances in practical implementation, structural reconstruction approaches, and mechanistic origins from diverse complementary viewpoints.
Gyu Rac Lee, Harry L. Tuller
wiley   +1 more source

Resistive Oxygen Gas Sensing Behavior of Zirconia-Doped Ceria

, 2011
In the present study, nanocrystalline ceria powder and 10 mol% zirconia-doped ceria (10ZDC) powder were prepared by co-precipitation method from cerium nitrate and zirconium nitrate precursors.
Chin Lung Liu, Chin Yi Chen, Ya Ting Chan, Wen Cheieh Tsai, Kai Hsin Chang   +4 more
core   +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

Electrocatalytic Oxidative Dehydrogenation of Ethane on Perovskite Oxides: Effect of B‐Site Transition Metal

ChemCatChem, Volume 18, Issue 16, 27 August 2026.
Electrocatalytic oxidative dehydrogenation of ethane: LSM, LSF, and LSCF were compared to reveal how the nature of oxygen species affects ODHE performance. Nucleophilic O2− on LSM enables efficient oxygen utilization, selectively forming C2H4 with high yield.
Jaesung Kim, Serra Yesilata, Anne C. Co, Seval Gunduz, Umit S. Ozkan   +4 more
wiley   +1 more source