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Author Spotlight: Characterizing Porous Materials for Aiding the Development of Robust Metal-Organic Frameworks with Adsorption Behavior
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Un marco orgánico poroso de poliimida cristalina para la adsorción selectiva de acetileno sobre etileno
Lingchang Jiang1, Yuyang Tian2, Tu Sun3
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry , Jilin University , Changchun 130012 , China.
Journal of the American Chemical Society
|October 27, 2018
Resumen
Un nuevo material poroso, PAF-110, adsorbe selectivamente el acetileno sobre el etileno, un paso crítico para la producción de etileno puro. Este material estable ofrece capacidades de separación mejoradas para la industria petroquímica.
Área de la Ciencia:
- Ciencias de los materiales
- Ingeniería Química
- Ciencia de la separación
Sus antecedentes:
- Las impurezas de acetileno impiden la polimerización del etileno, lo que requiere métodos de separación eficientes.
- Las técnicas de separación actuales se enfrentan a desafíos para lograr una alta pureza y eficiencia.
Objetivo del estudio:
- Sintetizar y caracterizar un nuevo material orgánico poroso para la adsorción selectiva de acetileno.
- Investigar la estabilidad y el rendimiento del material en la separación del acetileno del etileno.
Principales métodos:
- Síntesis de PAF-110 a través de la imidación del dianhidrido de naftaleno y la tris ((4-aminofenil) amina.
- Caracterización mediante análisis termogravimétrico y difracción de rayos X en polvo.
- Estudios de adsorción de gases a diferentes temperaturas y presiones.
Principales resultados:
- El PAF-110 demostró una alta estabilidad térmica y estructural.
- El material mostró una capacidad de adsorción de acetileno > 2 veces mayor que el etileno a 273 K.
- Se observó una selectividad moderada del acetileno (3.9) a 298 K, atribuida a las interacciones electrostáticas.
Conclusiones:
- PAF-110 es el primer material orgánico poroso cristalino que exhibe adsorción selectiva de acetileno sobre el etileno.
- Los hallazgos proporcionan información para el diseño de materiales porosos avanzados para separaciones de gases cruciales en la industria petroquímica.
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