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Cadros metálicos orgánicos fluorados hidrolíticamente estables para la deshidratación con eficiencia energética
Amandine Cadiau1, Youssef Belmabkhout1, Karim Adil1
1King Abdullah University of Science and Technology (KAUST), Division of Physical Science and Engineering (PSE), Advanced Membrane and Porous Materials (AMPM), Functional Materials Design, Discovery and Development (FMD), Thuwal 23955-6900, Kingdom of Saudi Arabia.
Science (New York, N.Y.)
|May 20, 2017
Resumen
Un nuevo marco metálico-orgánico, AlFFIVE-1-Ni, elimina eficientemente el vapor de agua del gas natural. Este material requiere menos energía para la regeneración en comparación con los agentes de secado convencionales.
Área de la Ciencia:
- Ciencias de los materiales
- Ingeniería Química
- Ciencias del medio ambiente
Sus antecedentes:
- La deshidratación del gas natural es crucial para el transporte y el uso.
- Los agentes de secado convencionales como la alúmina activada y los tamices moleculares requieren mucha energía para regenerarse.
Objetivo del estudio:
- Desarrollar un nuevo material energéticamente eficiente para la deshidratación del gas natural.
- Investigar las capacidades de adsorción selectiva de vapor de agua de un nuevo marco metal-orgánico.
Principales métodos:
- Síntesis y caracterización de un marco metálico orgánico fluorado hidrolíticamente estable, AlFFIVE-1-Ni (KAUST-8).
- Prueba de la capacidad del material para eliminar selectivamente el vapor de agua de las corrientes de gas que contienen componentes típicos de gas natural (CO2, N2, CH4, hidrocarburos).
- Evaluación de la energía necesaria para la desorción (regeneración) del agua adsorbida.
Principales resultados:
- AlFFIVE-1-Ni demostró la eliminación selectiva del vapor de agua de las corrientes de gas natural simuladas.
- El material también mostró la eliminación selectiva de agua y CO2 de las corrientes que contienen N2.
- La desorción completa del agua de AlFFIVE-1-Ni se produjo a una temperatura moderada (~105°C), requiriendo aproximadamente la mitad de la energía de los desecantes convencionales.
Conclusiones:
- AlFFIVE-1-Ni es una alternativa prometedora y energéticamente eficiente para la deshidratación del gas natural.
- La estructura única del material facilita la adsorción selectiva y la regeneración de baja energía.
- Este avance ofrece un potencial significativo para reducir la huella energética del procesamiento de gas natural.
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