Synthesis, Characterization and Catalytic Evaluation of Magnetically Recoverable SrO/CoFe2O4 Nanocatalyst for Biodiesel Production from Babassu Oil Transesterification

Falcão, Milton de Sousa; Garcia, Marco Aurélio Suller; Moura, Carla Verônica Rodarte de; Nicolodi, Sabrina; Moura, Edmílson Miranda de

doi:10.21577/0103-5053.20170209

Cited by 10 publications

(9 citation statements)

References 33 publications

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“…An increase of ASS BET , d pores, and V pores has been observed, when compared with the catalysts described by our research group and the literature. The difference may be related the strontium oxide is supported on the magnetic material 4,12,13,17,23 .…”

Section: The Magnetization Results Of the Sro/fe 3 O 4 Catalyst Indicmentioning

confidence: 99%

“…The ferrite enrichment was performed according to the method proposed by Falcão et al 4 . Strontium oxide and Fe 3 O 4 or SrFe 2 O 4 were mixed in a molar proportion (5:1) in acetone.…”

Section: Ferrites Enrichment With Sromentioning

confidence: 99%

“…The magnetite is the most common ferrites, it has the chemical formula FeO.Fe 2 O 3 or Fe 3 O 4 , a spinel structure with an inverted cation distribution, where Fe +3 cations coordinate the oxygen ions in tetrahedral symmetry and the Fe +2 and Fe +3 occupy the octahedral sites in equivalent proportions 4,5 . However, other types of ferrites can be synthesized change the cation Fe +2 to other divalent metal, such as strontium, magnesium, barium, copper, nickel, cobalt and zinc 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Alves et al 10 developed magnetic catalysts of Fe/Sn and Fe/Cd and used in the transesterification of soybean oil where they reached maximum yield of 86% after 1 hour of reaction at 200 °C. Falcão et al 4 synthesized SrO/CoFe 2 O 4 as a catalyst for transesterification reaction of babassu oil and obtained 96% yield under optimum conditions.…”

Section: Introductionmentioning

confidence: 99%

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Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil

et al. 2019

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This work described a new magnetic material enriched with strontium as catalyst to produce babassu biodiesel. The use of magnetic materials has attracted attention due to easy and fast separation from reaction medium. Moreover, they are ecologically correct, due to they generate less discards to the environment. Techniques of analysis and characterization were carried out to check the synthesis of magnetite and strontium ferrite, besides to verify the presence of hydroxide and carbonate in the structure of the strontium oxide. The best catalytic activities presented conversions of 78.6% and 89.7% when using the catalysts SrO/Fe 3 O 4 and SrO/SrFe 2 O 4 , respectively. Density studies of the alkali active sites were performed to elucidate the best activity for the catalyst composed with SrFe 2 O 4 .

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Section: The Magnetization Results Of the Sro/fe 3 O 4 Catalyst Indicmentioning

confidence: 99%

“…The ferrite enrichment was performed according to the method proposed by Falcão et al 4 . Strontium oxide and Fe 3 O 4 or SrFe 2 O 4 were mixed in a molar proportion (5:1) in acetone.…”

Section: Ferrites Enrichment With Sromentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil

et al. 2019

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“…A obtenção de um bom desempenho catalítico do ouro, com ambas conversão e seletividade elevadas, exige a presença de um meio reacional alcalino, isso porque a adição de uma base favorece a extração do oxigênio do álcool, o que ativa o substrato e, consequentemente, acelera o processo oxidativo (FALCÃO, et al, 2018). Considerando essa exigência, a utilização de óxidos e carbonatos de metais alcalinos-terrosos, que possuem basicidade intrínseca, pode ser uma alternativa viável à adição de sais alcalinos ao meio reacional.…”

Section: Introductionunclassified

ANÁLISE BROMATOLÓGICA DO ÓLEO DE COCO (Cocos nucifera L.) E DO ÓLEO DE ABACATE (Persea americana Mill.)

Rocha¹,

Uchôa²,

Rocha³

et al. 2021

A Geração De Novos Conhecimentos Na Química 2

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Direitos para esta edição cedidos à Atena Editora pelos autores. Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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A review of the use of SrO in catalysts for biodiesel production

Tavizón‐Pozos,

Cruz‐Aburto

2023

Biofuels Bioprod Bioref

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SrO has attracted attention for its use as a heterogeneous catalyst in producing biodiesel from transesterification owing to its high alkaline character and low solubility in methanol. In studies conducted in this decade, reaction conditions such as the methanol–oil molar ratio, reaction time, catalyst loading and temperature have been optimized in these systems. Furthermore, several works have been carried out to improve the physicochemical properties and increase the leaching resistance of this material. Thus, the new trends in using SrO in transesterification reactions are that this oxide should be supported or combined with Al2O3, TiO2, ZrO2, or Fe2O3, CaO, metal–organic frameworks, zeolites or La2O3. It has been observed that strontium can form mixed crystalline phases with these oxides by increasing the (M2+O2−) pairs and Lewis basicity of the oxygens, resulting in increased basicity and catalytic activity. Moreover, the transition metal oxides may provide Lewis acidity. Hence, these strontium‐containing catalytic systems have demonstrated a bifunctionality that can perform esterification and transesterification reactions at the same time. In addition, the combination of these oxides decreases the leaching of the catalyst. Other materials such as metal–organic frameworks, zeolites, and La2O3 have been studied as SrO supports, showing that they can be used in oil transesterification reactions.

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Synthesis, Characterization and Catalytic Evaluation of Magnetically Recoverable SrO/CoFe2O4 Nanocatalyst for Biodiesel Production from Babassu Oil Transesterification

Cited by 10 publications

References 33 publications

Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil

Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil

ANÁLISE BROMATOLÓGICA DO ÓLEO DE COCO (Cocos nucifera L.) E DO ÓLEO DE ABACATE (Persea americana Mill.)

A review of the use of SrO in catalysts for biodiesel production

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