Influence of Organic Solvent on Solvothermal Synthesis of Samaria and Gadolinia Doped Ceria – Nickel Oxide Composites

Alexander Rodrigo Arakaki; Sandra Maria Cunha; Walter Kenji Yoshito; Valter Ussui; Dolores Ribeiro Ricci Lazar

doi:10.4028/www.scientific.net/MSF.727-728.1317

Paper Titles

Synthesis and Characterization of Gadolinia-Doped Ceria with Manganese Addition
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Evaluation of Catalyst Ni_0.4Cu_0.1Zn_0.5Fe₂O₄on Methyl Esterification of Free Fatty Acid Present in Cottonseed Oil
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Synthesis of Inorganic Pigments from Glass-Ceramics of System Li₂O-ZrO₂-SiO₂ and Waste from Metallurgical Industry
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Precursors Influence on CaCu₃Ti₄O₁₂ Synthesis
p.1313

Influence of Organic Solvent on Solvothermal Synthesis of Samaria and Gadolinia Doped Ceria – Nickel Oxide Composites
p.1317

Combustion Synthesis of ZnAl₂O₄ Catalyst Using Glycine as Fuel for the Esterification and Transesterification of Soybean Oil: Influence the Form of Heating
p.1323

Combustion Synthesis of LSM Powders from a Precursor Solution with Mixed Fuels
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Processing and Characterization of Al₂O₃-YAG Composite
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Study of Polymorphs of Zirconia in the System ZrO₂: ƞ wt% Re₂O₃ Obtained by Polymeric Precursor Method
p.1340

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Influence of Organic Solvent on Solvothermal Synthesis of Samaria and Gadolinia Doped Ceria – Nickel Oxide Composites

Abstract:

The synthesis and ceramic processing of samaria and gadolinia doped ceria - nickel oxide composites, mainly applied as Solid Oxide Fuel Cell anodes, were studied in this work. Powders with composition Ce_0.8(SmGd)_0.2O_1,9/NiO and mass ratio of 40/60%, were synthesized by hydroxide coprecipitation with CTAB surfactant, followed by solvothermal treatment in n-butanol, ethanol and n-propanol at 150 °C for 16 hours, calcination at 600°C for 1 hour and milling. Sintering of compacted samples was performed at 1300°C for 1 hour. The powders were analyzed by X-ray diffraction, scanning electron microscopy, nitrogen adsorption method (BET), laser beam scattering (Cilas) and TG/DTA. The ceramics were analyzed by scanning electron microscopy, EDS, XRD and density measurements by Archimedes method. The results showed that the powders have a high specific surface area (42 - 85 m²/g). The ceramic characterizations showed a high chemical homogeneity and density value of 99% TD for powders treated with ethanol and propanol.