PI.105 Optimization of the in situ carbonization and sulfonation process in the production of sulfonated carbons applied in the isomerization of limonene to high added value products
Palavras-chave:
Sulfonated carbon, Rotational Central Composite Design (RCCD), heterogeneous catalysis, isomerization, limoneneResumo
Brazil is one of the major world producers of orange essential oil, in which the main constituent is the terpene called limonene. The isomerization of limonene produces terpene compounds with high added value, such as: terpinolene, α-terpinene and γ-terpinene, as well as p-cymene. These products have great applicability in the food, cosmetics, polymers and chemical industries. In this context, this work aimed to evaluate the isomerization of limonene using sulfonated carbons. The synthesis of sulfonated carbons was optimized using the Rotational Central Composite Design (RCCD). Eleven different experiments were investigated and correlations between synthesis conditions and catalytic performance were found. It was possible to reach, after 2 h of reaction at 150ºC, 94% of limonene conversion, with 20, 11 and 17% yield of α-terpinene, γ-terpinene and terpinolene, respectively. p-cymene, was also produced, but in smaller quantities. Reactions were carried out without solvent.
