Results 191 to 200 of about 6,144 (227)

Ethanothermal reduction to MoO2 microspheres via modified Pechini method

Journal of Crystal Growth, 2006
Abstract The Pechini process was modified to provide an ethanothermal reduction route to molybdenum dioxide microspheres at ambient temperature. The effects of citric acid (CA), ethylene glycol (EG), and H2SO4 environment on the formation of molybdenum oxide (MoO2) were studied.
Shutao Wang, Changhua An, Yange Zhang, Zude Zhang, Yitai Qian   +4 more
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Chemistry of the Pechini Process in Cerium‐Containing Systems

ChemInform, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
D. Todorovsky, N. Petrova, M. Getsova, R. Todorovska, I. Manolov, St. Groudeva‐Zotova   +5 more
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SÍNTESE DE HIDROXIAPATITA PELO MÉTODO PECHINI

Proceedings of the 2nd (ICAIC) International Conference for Academia and Industry Co-operation & 2nd (IMMSEM) International Meeting in Materials Science and Engineering of Maranhão, 2021
José Rosa de Souza Farias, Ketelly Estefane Da Silva Alves, Ycaro Breno Alves De Almeida, Adryann Millos Santos De Freitas, veruska do nascimento simões, Aluska do Nascimento Simoes Braga   +5 more
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Kinetics of Nanoscale Cerium Dioxide Prepared by Pechini Process

Journal of Materials Engineering and Performance, 2010
The crystallization kinetics of nanoscale cerium dioxide particles prepared by Pechini method was investigated by various non-isothermal methods using differential scanning calorimetry. The activation energies for the crystallization calculated from modified Kissinger and Ozawa equations are 19.7 and 22.4 kJ/mol, respectively, which are much lower than
Teng Zhang, Dian Tang, Yanqun Shao, Zhenping Yu   +3 more
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Seeding of PMN powders made by the Pechini method

Ceramics International, 2001
Abstract The partial oxalate method, with the columbite route, associated with the Pechini method, was used to obtain a very fine ceramic powder at low temperature. Using this route it was possible to obtain a very reactive powder and to synthesize a lead magnesium niobate (PMN) powder with up to 100% of perovskite phase at a lower temperatures than ...
Cavalheiro, A. A., Foschini, C. R., Zaghete, M. A., Paiva-Santos, C. O., Cilense, M., Varela, José Arana, Longo, Elson   +6 more
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Preparation of NiO/YSZ powders using a Pechini-type method: Priprava NiO/YSZ prahov s prilagojeno Pechini metodo:

2006
Nickel-oxide-yitria-stabilized zirconia (NiO-YSZ) powder mixtures were prepared using a Pechini-type sol-gel route. Metal chlorides/nitrates and citric or ascorbic acid were used to prepare the metal-carboxylic acid complexes. Their subsequent polyesterification with ethylene glycol at moderate temperatures yielded a homogeneous polymer resin.
Francetič, Vojmir, Maček, Jadran, Razpotnik, Tanja   +2 more
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Nanopowders of dental zirconia obtained by Pechini synthesis route

2013
Objective: Structural ceramics based on tetragonal zirconia has been used in dentistry with the goal of building prosthetics infrastructures, starting from the machining of prefabricated blocks. However, it is known that this material can undergo aging in humid conditions, thus allowing them to revert to the monoclinic phase, potentially compromising ...
BORTOLINI, Sergio, NATALI, Alfredo, BONDIOLI, Federica, Maziero Volpato CA, Fredel MC, CONSOLO, Ugo   +5 more
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Sol-Gel Pechini synthesis of SOFC nanostructured materials

2012
Introduction In last years, new energy devices working with renewable sources were taken into account in order to give different choice to fossil fuel-based systems. Solid Oxide Fuel Cells (SOFCs) are electrochemical systems which produce energy by exploiting the ionic conduction of some materials; their efficiency can reach about 80% by co-generation ...
Fasolin Stefano, S Boldrini, C Mortalò, F Agresti, M Fabrizio, S Barison   +5 more
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SÍNTESE DE NANOPARTÍCULAS DE HIDROXIAPATITA ATRAVÉS DO MÉTODO PECHINI

Anais do Congresso Brasileiro Interdisciplinar em Ciência e Tecnologia, 2022
José Rosa de Souza Farias, Victória Régia Alves Sales, Ycaro Breno Alves de Almeida, Diógenes De Moura Junior, Ketelly Estefane Da Silva Alves, MAYSA MEMÓRIA MARTINS, veruska do nascimento simões, Aluska do Nascimento Simões Braga   +7 more
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AVALIAÇÃO ESTRUTURAL E MORFOLÓGICA DA HIDROXIAPATITA SINTETIZADA POR PECHINI

Anais do Congresso Brasileiro Interdisciplinar em Ciência e Tecnologia, 2020
Geysivana Késsya Garcia Carvalho, Ycaro Breno Alves de Almeida, Ketelly Estefane Da Silva Alves, José Rosa de Souza Farias, veruska do nascimento simões, Aluska do Nascimento Simões Braga   +5 more
openaire   +1 more source