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Biodiesel production by transesterification using choline hydroxide as catalyst
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Orientador(es)
Resumo(s)
Biodiesel is a mixture of alkyl esters derived from vegetable oils or animal fat. Itis a biodegradable and renewable fuel and does not contribute to the emission of polluting gases into the atmosphere. Still, its major disadvantage is its relatively high cost, usually regarding production and raw materials costs (Langet al., 2001). Crude oils and fats extracted from plants and animals are
alternatives to highly polluting fossil fuels. They are composed of triglycerides, which can be converted into biofuels through transesterification processes. The alcoholysis of vegetable oils or animal fats may be carried out using different catalysts: acids, bases, and enzymes. Basic catalysts, sodium or potassium hydroxide, are about 4,000 times faster than acid catalysts and do not require large amounts of alcohol. On the other hand, ionic liquids (ILs) use in catalytic processes has been studied mainly in the ecological field, as it allows a high recycling efficiency. ILs based on the choline cation (2-hydroxyethyl trimethylammonium) have received much attention, mainly due to its biocompatibility characteristics and potential for various industrial applications. Choline hydroxide (ChOH – see Fig. 1) in particular represents a promising option due to its good catalytic performance in methanol solution and its successful reuse (Fan et al., 2013). This work's main objective was to optimize the methyl transesterification reaction conditions using commercial and waste sunflower oil as raw material and ChOH as catalyst. The possibility of recovering the ChOH catalyst between reaction cycles was also assessed.
Descrição
Palavras-chave
Biodiesel
Contexto Educativo
Citação
Lima, Renata; Queiroz, Ana; Ribeiro, António E.; Brito, Paulo (2025). Biodiesel production by transesterification using choline hydroxide as catalyst. In ECCS2025 – The 3rd International Electronic Conference on Catalysis Sciences. Online