Avaliação da perovsquita BaCeO3 como catalisador na conversão de óleo de soja em biodiesel via rota etílica

Silva, Alexsandro Rocha da; Quixadá, Gustavo Fernandes; Santos, Paulo Eduardo da Costa; Santos, Andarair Gomes dos

doi:10.36229/978-85-7042-171-5.cap.09

Cited by 1 publication

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“…The EDTA-Citrate complexation method based on the methodology described by SANTOS et al [10], SILVA et al [11] and SILVA et al [17] is shown in Figure 1 and briefly described below: initially, some amount of acidic EDTA was diluted in ammonium hydroxide at a ratio of 1 g:10 mL and kept under controlled stirring and heating (solution 1), then to solution 2 (Fe(NO 3 ) 3 .9H 2 O) and then solution 3 (Cu(NO 3 ) 2 .3H 2 O) was added to solution 1 and then solution 4. Subsequently citric acid was added (solution 4) and then the temperature was increased and controlled by about 80 °C until gel formation.…”

Section: Synthesis Of Copper Ferrite By Edta-citrate Complexation Methodsmentioning

confidence: 99%

Effect of thermal parameters and pH on obtaining copper ferrite via EDTA-Citrate complexation method

Silva

Santos

et al. 2021

Matéria (Rio J.)

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The synthesis of ceramic materials such as ferrite has been widely studied in recent years, due to their properties that make these materials have excellent applications in technology, as well as in photocatalytic processes and as catalysts. To obtain the copper ferrite phase the EDTA-Citrate complexation method was used, varying pH (5, 7 and 9), temperature (600, 800 and 1000 °C) and calcination time (2, 7 and 12 h). Composition, morphology and structural analyzes were performed by X-ray fluorescence spectroscopy, X-ray dispersive energy, scanning electron microscopy and X-ray diffraction, respectively. Crystalline phase of copper ferrite (CuFe 2 O 4 ) with tetragonal structure and secondary phase of Fe 2 O 3 and CuO was verified by XRD analysis. Regarding the chemical composition analyzes, percentage deviations of the samples and the theoretical value for copper and iron were calculated. It was obtained minimum values of 0.16 -0.08% (atomic%, EDS) and 16 -8% (atomic%, XRF) in relation to copper and iron, respectively, for the sample obtained under pH 9, calcined at 600 °C for 12 h. The variation of the synthesis condition via EDTA-Citrate directly influenced the morphology of copper ferrite, presenting agglomerated particles, pore formation, irregular spheres, and even powder sintering.

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Section: Synthesis Of Copper Ferrite By Edta-citrate Complexation Methodsmentioning

confidence: 99%

Effect of thermal parameters and pH on obtaining copper ferrite via EDTA-Citrate complexation method

Silva

Santos

et al. 2021

Matéria (Rio J.)

Self Cite

View full text Add to dashboard Cite

show abstract

Avaliação da perovsquita BaCeO3 como catalisador na conversão de óleo de soja em biodiesel via rota etílica

Abstract: Modo de acesso: World Wide Web Inclui bibliografia 1. Petróleo 2. Combustíveis. I. Andrade, Davilson Eduardo CDD338.2728 O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos seus respectivos autores.

Cited by 1 publication

References 7 publications

Effect of thermal parameters and pH on obtaining copper ferrite via EDTA-Citrate complexation method

Effect of thermal parameters and pH on obtaining copper ferrite via EDTA-Citrate complexation method

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