Kinetics of Soybean Oil Hydrolysis on Niobium Catalysts |
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| Authors: | Samia Tássia Andrade Maciel Alexander Andrey Lopes da Silva Yasmin Guimarães Pedro Cristiano Nunes da Silva Leôncio Diógenes Tavares Câmara João Monnerat Araújo Ribeiro de Almeida Emerson Schwingel Ribeiro Gabriel Francisco da Silva Lisiane Santos Freitas Donato Alexandre Gomes Aranda |
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| Affiliation: | 1. Universidade Federal Rio de Janeiro, Escola de Química, 21941909 Rio de Janeiro, RJ, Brasil;2. Universidade Federal Rio de Janeiro, Instituto de Química, 21941909 Rio de Janeiro, RJ, Brasil;3. Universidade do Estado do Rio de Janeiro, Instituto Politécnico, 28601970 Rio de Janeiro, RJ, Brasil;4. Universidade Federal de Sergipe, Núcleo de Engrenharia de Petróleo, 49100000 São Cristóvão, SE, Brasil;5. Universidade Federal de Sergipe, Departamento de Química, 49100000 São Cristóvão, SE, Brasil |
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| Abstract: | The catalytic hydrolysis of soybean oil was used as an alternative for the production of monoglycerides (MG) and diglycerides (DG). The reactions were conducted in a stainless-steel tubular reactor in the temperature range of 240–290 °C, on niobium phosphate (NBP) and niobium oxide (NBO) as catalysts. In the hydrolysis reactions at 270 °C, the maximum selectivities of the products of interest were obtained at 22 % MG and 48 % DG for the reaction with NBP, and 7 % MG and 33 % DG with NBO, for 59 % and 36 % of triglyceride conversion in 10 min, respectively. The proposed kinetic model presented a good fit of the theoretical model with the experimental data, showing that the previous hypotheses considered for the mechanism development are suitable for describing the kinetics of soybean oil hydrolysis. |
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| Keywords: | Catalytic hydrolysis Diglycerides Monoglycerides |
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