Argila bentonítica funcionalizada com potássio: caracterização e uso como catalisar para reação de transesterificação do óleo de algodão
Bentonitic clay functioned with potassium: characterization and use as a catalyst for cotton oil transesterification reaction
Jonei Marques da Costa, Luiz Rogério Pinho de Andrade Lima
Resumo
O uso de argilas é uma alternativa tecnicamente adequada à síntese de catalisadores de alta eficiência para transesterificação com o objetivo de produzir biodiesel etílico ou metílico, com vantagens em relação aos métodos comercialmente utilizados. O presente trabalho teve como objetivo analisar diferentes formas de funcionalizar uma bentonita com K+ para catalisar a transesterificação etílica e metílica do óleo de algodão. A bentonita e catalisadores foram caracterizados por DRX, FRX e FT-IR. O óleo e seus produtos foram analisados por cromatografia gasosa e FT-IR. A análise exploratória da fração oleosa por FT-IR produziu resultados consistentes e convergentes com o método tradicional de análise por cromatografia gasosa. A transesterificação metílica teve seu melhor desempenho (91%) usando o catalisador KC400 (Bentonita + K2 CO3 ). A transesterificação etílica teve seu melhor desempenho (35%) usando o catalisador KF700 (Bentonita + KF).
Palavras-chave
Abstract
The use of clays is a technically suitable alternative to the synthesis of high-performance catalysts for transesterification in order to produce biodiesel ethyl or methyl, with advantages over the commercially used methods. This study aimed to analyze different ways to functionalize one bentonite K+ to catalyze the transesterification ethyl and methyl cotton oil. Bentonite and catalysts were characterized by XRD, XRF and FT-IR. Oil and it is reaction products were analyzed by gas chromatography and FT-IR. Exploratory analysis of the oily fraction produced by FT-IR consistent results and converging with the traditional method of analysis by gas chromatography. Methyl transesterification performed best (91%) using the KC400 catalyst (Bentonite + K2 CO3 ). Ethyl transesterification had its best performance (35%) using the catalyst KF700 (Bentonite + KF).
Keywords
References
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Submitted date:
08/15/2020
Accepted date:
02/09/2021
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