Results 41 to 50 of about 4,063 (161)

Towards stable single-atom catalysts: Strong binding of atomically dispersed transition metals on the surface of nanostructured ceria [PDF]

, 2017
The interaction of a series of different transition metal atoms with nanoparticulate CeO2 has been studied by means of density-functional calculations.
Bruix Fusté, Albert, Figueroba Sánchez, Alberto, Kovács, Gábor, Neyman, Konstantin M.   +3 more
core   +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, Ekaterina Smal, Mikhail Simonov, Konstantin Valeev, Valeria Fedorova, Tamara Krieger, Svetlana Cherepanova, Arcady Ishchenko, Vladimir Rogov, Vladislav Sadykov   +9 more
doaj   +1 more source

Improved Dry‐Pressing Strategy for Fabricating Double‐Sided Rough YSZ Electrolyte Thin Films and Their Performance in Solid Oxide Cells

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study addresses limitations of the conventional dry‐pressing method for electrolyte‐supported films—smooth surfaces, excessive thickness, and fragile supports inducing damage. We propose an innovative camphor–quartz sand composite architecture to construct a five‐layer (camphor/quartz sand/YSZ/quartz sand/camphor) system, enabling thin ...
Hong Chang, Hewei Xu, Haoyu Li, Jiachun Niu, Lina Zhang, Chenying Yao, Yiyi Zhang, Huili Chen, Chuan Dong   +8 more
wiley   +1 more source

Supported nano gold as a recyclable catalyst for green, selective and efficient oxidation of alcohol using molecular oxygen

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
doaj   +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, EarlyView.
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

Design and Evaluation of Zirconia Based Thermal Barrier Powders for Advanced Engines [PDF]

Engineering and Technology Journal, 2017
Advanced utility, diesel and turbines engines used widely in aerospace, chemical and oil industries are based on plasma sprayed thermal barrier coatings.
M. Kadhim, M. Hafiz, M. Ali Bash
doaj   +1 more source

Electrocatalytic Enhancement of CO Methanation at the Metal–Electrolyte Interface Studied Using In Situ X-ray Photoelectron Spectroscopy

C, 2023
For the direct reduction of CO2 and H2O in solid oxide electrolysis cells (SOECs) with cermet electrodes toward methane, a fundamental understanding of the role of elemental carbon as a key intermediate within the reaction pathway is of eminent interest.
Christoph W. Thurner, Leander Haug, Daniel Winkler, Christoph Griesser, Matthias Leitner, Toni Moser, Daniel Werner, Marco Thaler, Lucas A. Scheibel, Thomas Götsch, Emilia Carbonio, Julia Kunze-Liebhäuser, Engelbert Portenkirchner, Simon Penner, Bernhard Klötzer   +14 more
doaj   +1 more source

Design of High‐Performance MnCo1.5Cu0.5O4 Spinel Contact Material with Optimized Electrical Conductivity and Thermal Stability for Solid Oxide Electrolysis Cells by Cu Doping

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Cu‐doped spinel MnCo1.5Cu0.5O4 exhibits excellent conductivity and stability as SOC contact material. After 1000‐h aging at 850 °C, the contact layer maintains a 10 mΩ cm2 ASR value, and a single‐cell stack achieves a H2O/CO2 co‐electrolysis power density of 0.52 W cm−2.
Haozhen Li, Shuai Yuan, Xingtong Mao, Hao Shi, Hengyong Tu, Chao Ma, Lei Zhu, Zhen Huang   +7 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

Atomic Scale Insight Into High Voltage Degradation Mechanism in YSZ Electrolyte for Solid Oxide Electrolyzer Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The evolution of yttria‐stabilized zirconia (YSZ) electrolyte microstructure after testing at progressively high voltages was captured at the micro‐ and atomic‐scale levels to determine the operational boundaries of a solid oxide electrolysis cell (SOEC).
Tian Liu, Renaldo Springer, Seraphim V. Belko, Danny J. Edwards, Kayla H. Yano, Tiffany C. Kaspar, Libor Kovarik, Daniel K. Schreiber, Matthew J. Olszta, Olga A. Marina   +9 more
wiley   +1 more source