Results 91 to 100 of about 96,778 (262)

Equilibrium in the Catalytic Condensation of Carboxylic Acids with Methyl Ketones to 1,3-Diketones and the Origin of the Reketonization Effect [PDF]

, 2019
Acetone is the expected ketone product of an acetic acid decarboxylative ketonization reaction with metal oxide catalysts used in the industrial production of ketones and for biofuel upgrade.
DiProspero, Thomas, Ignatchenko, Alexey, LaPenna, Joseph R., Patel, Heni   +3 more
core   +1 more source

Sintering Kinetics of Plasma-Sprayed Zirconia TBCs

, 2007
A model of the sintering exhibited by EB-PVD TBCs, based on principles of free energy minimization, was recently published by Hutchinson et al. In the current paper, this approach is applied to sintering of plasma-sprayed TBCs and comparisons are made ...
A. Cipitria, A. Needleman, A.C.F. Cocks, A.C.F. Cocks, A.C.F. Cocks, A.J. Allen, A.M.J. Mayo, B. Sun, F. Parhami, H.H. Yu, I.O. Golosnoy, I.O. Golosnoy, J. Pan, J. Pan, J. Pan, J. Svoboda, J. Svoboda, M. Saitou, M. Saitou, R.G. Hutchinson, S. Brunauer, T.W. Clyne, Y. Sakka, Z. Suo   +23 more
core   +1 more source

Simultaneous catalytic oxidation of carbon monoxide, hydrocarbons and soot with Ce–Zr–Nd mixed oxides in simulated diesel exhaust conditions [PDF]

, 2015
Ce0.73−xZr0.27NdxO2 mixed oxides (x ≤ 0.3) were prepared, characterized by XRD, Raman spectroscopy, N2 adsorption isotherms and H2-TPR, and tested for simultaneous CO, propylene, benzene and soot oxidation in a gas mixture containing O2, NOx, H2O, CO2 ...
Bueno López, Agustín, Hernández Giménez, Ana M., Lozano-Castello, Dolores, Rico Pérez, Verónica, Xavier, Leandro P. dos Santos   +4 more
core   +2 more sources

Transition of Ion Diffusion Mechanism in BaZr0.1Ce0.7Y0.1Yb0.1O3‐δ Electrolyte Under Real Operating Conditions

Small Methods, Volume 10, Issue 8, 22 April 2026.
Ion diffusion in the benchmark BZCYYb electrolyte is revealed to dynamically transition under realistic PCFC operating conditions. As temperature decreases, the electrolyte shifts from oxygen‐ion to proton‐dominant conduction via grain‐boundary hydrogenation and in situ hydration, even without external humidification.
Zhixin Luo, Tianjiu Zhu, Zehua Wang, Nai Shi, Gaopeng Zhou, Leqi Zhao, Lichao Jia, Zhonghua Zhu, Zongping Shao   +8 more
wiley   +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

Mixed valency in cerium oxide crystallographic phases: Determination of valence of the different cerium sites by the bond valence method [PDF]

, 2008
We have applied the bond valence method to cerium oxides to determine the oxidation states of the Ce ion at the various site symmetries of the crystals.
A. Trovarelli, A. Trzesowska, C. Ferraris, D. Taylor, E. Shoko, F. de Groot, F. Mohri, I. Brown, I. D. Brown, I. D. Brown, J. K. Burdett, J. Roehler, L. Eyring, M. F. Smith, M. Robin, P. Cox, P. Villars, R. D. Shannon, R. Hoppe, R. McWeeney, R. W. G. Wyckoff, Ross H. McKenzie, U. Mueller   +22 more
core   +2 more sources

Tuning Ce‐Zr‐Al Mixed Oxide Supports to Enhance Pt‐Pd Catalyst Performance for Low‐Temperature CO and C3H6 Oxidation in Diesel Emissions

ChemCatChem, Volume 18, Issue 5, 13 March 2026.
ABSTRACT Diesel oxidation catalysts (DOCs) with low‐temperature activity are required for low‐temperature combustion diesel (LTC‐D) engine technologies to meet emission regulations. To probe the impact of oxygen availability on activity, bimetallic Pt‐Pd catalysts supported on Ce‐Zr‐Al mixed oxides with varying Ce/Zr/Al contents were systematically ...
Azam Movasati, Jay Nejad, Zhibin Ye, Melanie J. Hazlett   +3 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

2D and 3D photonic crystal materials for photocatalysis and electrochemical energy storage and conversion [PDF]

, 2018
This perspective reviews recent advances in inverse opal structures, how they have been developed, studied and applied as catalysts, catalyst support materials, as electrode materials for batteries, water splitting applications, solar-to-fuel conversion ...
Armstrong, Eileen, Collins, Gillian, Geaney, Hugh, McNulty, David, O'Dwyer, Colm, O'Hanlon, Sally   +5 more
core   +1 more source

Propane Dehydrogenation Over Reduced CeO2 and CeZrO2

ChemCatChem, Volume 18, Issue 6, 27 March 2026.
Ceria, a non‐noble metal oxide considered inactive for propane dehydrogenation, is transformed into an active catalyst via a deep, bulk‐level reduction pre‐treatment that generates new active sites and unlocks alternative low‐energy pathways for this process.
Benjamín Bohigues, Laura Hernández, Aroa Alós, Francisco Gonell, Manuel Moliner, Mercedes Boronat, Pedro Serna   +6 more
wiley   +1 more source