Ajuste de Mesoporosidade e Seletividade em Intermediários de Interconversão FAU–MFI para Produção de Xilenos
Palavras-chave:
Zeólitas híbridas, ; intermediários de transformação interzeolítica, Porosidade hierárquicaResumo
A produção sustentável de aromáticos a partir de fontes renováveis é um desafio central para a descarbonização da indústria de polímeros. Neste estudo, zeólitas hierárquicas híbridas foram obtidas por interconversão assistida por micro-ondas da fase FAU para MFI e avaliadas na conversão de 2,5-dimetilfurano (DMF) e etanol em p-xileno. As propriedades estruturais, texturais e ácidas foram caracterizadas por DRX, MEV, MET, RMN, espectroscopia Raman e TPD de NH₃. Os resultados demonstraram que a hibridização das estruturas promoveu maior acessibilidade molecular e impactou diretamente a seletividade de formato, favorecendo a formação de p-xileno. O catalisador HyZ-38, contendo unidades estruturais de FAU e MFI, apresentou o melhor desempenho, com rendimento de 45,2%. Esses achados reforçam o potencial das zeólitas híbridas como catalisadores eficientes em processos sustentáveis voltados à valorização da biomassa.
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