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Control de la flexibilidad del marco de zeolita y de la topología de los poros para la separación del etano y el
Pablo J Bereciartua1, Ángel Cantín1, Avelino Corma2
1Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain.
Science (New York, N.Y.)
|November 25, 2017
Resumen
Los investigadores desarrollaron un nuevo material de zeolita para separar el etileno del etano, que ofrece un ahorro de energía significativo en comparación con los métodos tradicionales. Este material avanzado proporciona una separación molecular altamente selectiva para aplicaciones industriales.
Área de la Ciencia:
- Ciencias de los materiales
- Ingeniería Química
- Ciencia de la adsorción
Sus antecedentes:
- La separación del etileno y el etano es crucial para los procesos industriales, generalmente se logra a través de una destilación criogénica que requiere mucha energía.
- El desarrollo de métodos alternativos de separación, como la adsorción, puede conducir a un ahorro sustancial de energía.
- Se necesitan nuevos materiales para separar de manera eficiente y selectiva el etileno del etano.
Objetivo del estudio:
- Sintetizar y caracterizar estructuralmente una nueva zeolita de sílice pura y flexible, designada ITQ-55.
- Evaluar el rendimiento del ITQ-55 para la separación cinética del etileno del etano.
- Explorar el potencial de este material para la separación molecular con eficiencia energética.
Principales métodos:
- Síntesis de una zeolita de sílice pura y flexible (ITQ-55).
- Determinación estructural mediante técnicas avanzadas de caracterización.
- Experimentos de adsorción para evaluar el rendimiento de separación de las mezclas de etileno/etano.
Principales resultados:
- Síntesis exitosa y aclaración estructural de la zeolita ITQ-55.
- ITQ-55 demostró una selectividad cinética excepcional (~100) para separar el etileno del etano.
- La topología de poros y la flexibilidad únicas del material contribuyen a su alta eficiencia de separación.
Conclusiones:
- La zeolita flexible ITQ-55 representa un avance significativo en los materiales para las separaciones moleculares.
- Este material ofrece una alternativa altamente selectiva y potencialmente ahorradora de energía a la destilación criogénica para la separación de etileno/etano.
- Los hallazgos amplían el ámbito de aplicación de las zeolitas en los difíciles procesos de separación industrial.
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