Results 31 to 40 of about 974 (182)

Carbon Coking‐Tolerant Perovskite Catalyst Nd0.9Mg0.1Fe0.4Ni0.6O3 for Efficient Methane Dry Reforming

Carbon and Hydrogen, EarlyView.
A new perovskite‐type catalyst Nd0.9Mg0.1Fe0.4Ni0.6O3 was developed for methane dry reforming, which exhibited 93.1% CH4 and 94.7% CO2 conversion with 100 h stability run and excellent anti‐coking capability, benefited from in situ exsolved Fe‐Ni alloy nanoparticles. ABSTRACT Perovskite with high temperature stability and tunability is a very promising
Zhenjie Wang, Xingchao Dai, Xinjiang Cui
wiley   +1 more source

Avaliação de argilas pura e impregnada com SnO2 como catalisador para a produção de biodiesel

Cerâmica, 2015
ResumoA versatilidade de materiais naturais como as argilas tem chamado a atenção para a sua aplicação em estudos científicos. Neste trabalho foi avaliado o enriquecimento dessas propriedades com a impregnação de SnO2 na superfície desse material, e seu ...
A. M. Neris, D. Araújo, Y. Cavalcante, A. F. F Farias, K. F. Moura, A. A. Cutrin, J. D. S. S. Nascimento, E. Longo, A. G. Souza, I. M. G. Santos   +9 more
doaj   +1 more source

Transition Metal Compounds as Thermochromic Materials: Classification, Properties, Limitations, and Applications

EcoEnergy, EarlyView.
This review systematically examines how different transition metal compounds—such as binary and multinary metal oxides, halides, sulfides, and salts—exhibit thermochromism based on the d‐electron configurations of their transition metal cations. It focuses on three main mechanisms of thermochromism: phase transition, charge transfer, and bandgap change.
Jie Wang, Shan Wang, Long Yuan, Ling Zuo, Hui Qi, Changmin Hou   +5 more
wiley   +1 more source

Pechini Synthesis of Nanostructured Li1.05M0.02Mn1.98O4 (M = Al3+ or Ga3+) [PDF]

Materials Research, 2015
Doped Li1.05M0.02Mn1.98O4 (M = Ga3+ or Al3+) were prepared by Pechini synthesis using lithium and manganese acetates, citric acid, ethylene glycol, and the respective oxide or acetate of the doping ions in molar ratios of 2.00 (Mn1.98 + M0.02) to 1.05 Li.
Amaral, Fábio Augusto, Santana, Laiane Kálita, Campos, Iury Oliveira, Fagundes, Wélique Silva, Xavier, Farlon Felipe Silva, Canobre, Sheila Cristina   +5 more
openaire   +4 more sources

Materiais cerâmicos catalíticos à base de hexa-aluminato de metais alcalino terrosos (Ba e Ca): síntese e análise estrutural

Cerâmica, 2015
ResumoO objetivo desse trabalho é desenvolver catalisadores cerâmicos compostos por hexa-aluminatos de metais alcalinos terrosos (Ca e Ba) - CaAl12O19 e BaAl12O19, respectivamente, na forma de pó cerâmico, por meio dos métodos de síntese Pechini e da ...
L. S. Neiva, C. R. P. B. Borges, M. I. Brasileiro, L. M. Novaes, A. M. Cabral, J. B. L. Oliveira   +5 more
doaj   +1 more source

Nanocubes and Cuboctahedra: Entropic Stabilization Versus Thermal Segregation in Rock Salt‐ and Spinel‐Type Multinary Oxides from Spray‐Flame Synthesis

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Spray‐flame synthesis enables highly flexible and scalable production of multinary and high‐entropy oxide nanoparticles due to high synthesis temperatures with subsequent quenching. Temperature‐dependent in situ diffraction of as‐synthesized materials clearly reveals entropy stabilization in rock salt lattices, while spinels—featuring tetrahedral and ...
Mohammed‐Ali Sheikh, Steven Angel, Sabrina Schleich, Leon Müller, Jan Ternieden, Hatem M. A. Amin, Christof Schulz, Hartmut Wiggers   +7 more
wiley   +1 more source

PECHINI SYNTHESIS AND CHARACTERIZATION OF Eu3+ DOPED ZnCo2O4 SPINELS [PDF]

Periódico Tchê Química, 2005
Spinel oxides with the composition ZnCo2O4 and ZnCo2O4:Eu3+ have been synthesized by the Pechini method and characterized by X-ray diffraction, infrared spectroscopy, thermal analysis and scanning electron microscopy. IR spectroscopy revealed the presence of n1 and n2 bands, typical of spinel structures.
Pimentel, P.M., Pedrosa, A.M.G., Souza, H.K.S., Júnior, C.N.S., Pinto, R.C.A., Melo, D.M.A.   +5 more
openaire   +2 more sources

Entropy‐Driven Innovations: Entropy Stabilized Oxides for High‐Performance Next‐Generation Lithium–Sulfur Batteries

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 5, September 2026.
This article explores high‐entropy‐stabilized oxides (HEOs) as novel functional materials for addressing critical issues in lithium–sulfur (Li–S) batteries, including lithium polysulfide (LPS) shuttling, inadequate conductivity, and slow redox kinetics.
Hassan Raza, Jialiang Wei, Zhicai Wang, Zhaoyang Lv, Junye Cheng, Jia Xu, Liang An, Yuliang Liu, Sergey Ryazantsev, Shukui Li, Guangping Zheng   +10 more
wiley   +1 more source

Thermistor formation using BaTiO3 powders synthesised by the Pechini method

Ingeniería e Investigación, 2010
Barium titanate (BaTiO3) is a compound of interest in the field of electroceramics which is widely used in the manufacture of capacitors, piezoelectric transducers and resistive devices having a positive temperature coefficient (PTCR) and in manufacturing pyroelectric and optoelectronic devices.
Fernández Perdomo, Claudia P., Rodríguez Páez, Jorge E.   +1 more
openaire   +2 more sources

GREEN AND CONVENTIONAL SYNTHESIS OF NiO NANOPARTICLES: IMPACT OF ERUCA SATIVA ON PHOTOCATALYSIS

Materiali in Tehnologije
In this study, we report a hybrid synthesis route to nickel oxide (NiO) nanoparticles that combines conventional sol–gel and Pechini methods with a green, bio-mediated approach using Eruca sativa (rocket) extract for the first time in NiO synthesis. This
Samia Remli, Djanette Meriem Blizak, Salah Blizak   +2 more
doaj   +1 more source