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Bis-BN ciclohexano: un material químico de almacenamiento de hidrógeno notablemente estable desde el punto de vista

Gang Chen¹, Lev N Zakharov, Mark E Bowden

¹Department of Chemistry, Boston College , Chestnut Hill, Massachusetts 02467-3860, United States.

Journal of the American Chemical Society

|December 16, 2014

Resumen

Los investigadores desarrollaron un nuevo material químico de almacenamiento de hidrógeno con una capacidad de almacenamiento de hidrógeno de 4,7% de peso. Este compuesto térmicamente estable libera rápidamente hidrógeno a temperatura ambiente con un catalizador, crucial para las aplicaciones de celdas de combustible.

Área de la Ciencia:

Ciencia de los materiales Ciencia de los materiales.
Ingeniería Química Ingeniería Química.
Almacenamiento de energía Almacenamiento de energía

Sus antecedentes:

El almacenamiento de hidrógeno es esencial para la tecnología de pilas de combustible.
La estabilidad térmica a largo plazo es crítica para las aplicaciones de energía de respaldo.
El desarrollo de materiales de almacenamiento de hidrógeno eficientes y estables sigue siendo un desafío clave.

Objetivo del estudio:

Desarrollar un material químico de almacenamiento de hidrógeno cinéticamente estable.
Para lograr una alta capacidad de almacenamiento de hidrógeno y estabilidad térmica.
Para permitir una rápida desorción de hidrógeno a temperatura ambiente para aplicaciones prácticas.

Principales métodos:

Síntesis y caracterización de un nuevo isóster de boro-nitrógeno (BN) de ciclohexano.
Evaluación de la estabilidad térmica hasta 150 °C en solución y en estado puro.
Activación catalítica para la desorción rápida de hidrógeno a temperatura ambiente.
Aislamiento y caracterización de compuestos de jaula formados durante la desorción.

Principales resultados:

Se desarrolló un nuevo material químico de almacenamiento de hidrógeno con una capacidad de H2 del 4,7% en peso.
El material exhibe una inusual estabilidad cinética y es térmicamente estable hasta 150 °C.
Se logró una desorción rápida de hidrógeno a temperatura ambiente utilizando un catalizador, sin contaminantes volátiles detectables.
Se aislaron y caracterizaron dos nuevos compuestos de jaula con simetría S4.

Conclusiones:

El material desarrollado representa un avance significativo en el almacenamiento químico de hidrógeno para aplicaciones de celdas de combustible.
Su estabilidad térmica y su eficiente liberación de hidrógeno a temperatura ambiente ofrecen una solución prometedora para sistemas de energía de respaldo.
El descubrimiento de nuevos compuestos de jaula proporciona más información sobre los mecanismos de reacción de la desorción del hidrógeno.

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