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MOFs como adsorbentes para aplicaciones de calefacción y refrigeración a baja temperatura
Stefan K Henninger1, Hesham A Habib, Christoph Janiak
1Thermal Systems and Buildings, Fraunhofer-Institut Solare Energiesysteme ISE, Heidenhofstr. 2, 79110 Freiburg, Germany. stefan.henninger@ise.fraunhofer.de
Journal of the American Chemical Society
|February 12, 2009
Resumen
Un nuevo marco metal-orgánico (MOF, por sus siglas en inglés) demuestra la adsorción reversible del agua, lo que lo convierte en un candidato prometedor para ciclos eficientes de transformación térmica de adsorbentes sólidos.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Química Química es la química.
- La ingeniería de ingeniería de ingeniería.
Sus antecedentes:
- Las estructuras metálicas orgánicas (MOF) son materiales cristalinos porosos con propiedades sintonizables.
- La estabilidad del agua y la capacidad de adsorción son factores clave para los MOF en aplicaciones térmicas.
Objetivo del estudio:
- Para investigar las propiedades de adsorción de agua de un nuevo MOF 3D basado en Ni.
- Evaluar su potencial como adsorbente sólido para ciclos de transformación térmica.
Principales métodos:
- Síntesis y caracterización del MOF 3D: {[Ni(3)(mu(3)-btc)(2)(mu(4)-btre)(2)(mu-H(2)O)(2)]. aproximadamente 22H{\displaystyle 22H} y 2O{\displaystyle 2O} .
- Experimentos de ciclos de deshidratación-hidratación reversibles para evaluar la absorción y liberación de agua.
Principales resultados:
- El MOF sintetizado exhibe una excelente estabilidad al agua.
- Se logró una distribución de carga significativa de 210 g/kg, lo que indica una alta capacidad de adsorción de agua.
- El material demostró un comportamiento de deshidratación-hidratación reversible.
Conclusiones:
- El 3D Ni-MOF es un material estable al agua adecuado para aplicaciones de energía térmica.
- Su alta capacidad de carga de agua lo convierte en un fuerte candidato para adsorbentes sólidos en sistemas de refrigeración, bombeo de calor y almacenamiento de calor.
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