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La descomposición del triperóxido de triacetona es una explosión entrópica

Faina Dubnikova¹, Ronnie Kosloff, Joseph Almog

¹Chemistry Department, Fritz Haber Institute for Molecular Dynamics, and Casali Institute of Applied Chemistry, Hebrew University, Jerusalem 91904, Israel.

Journal of the American Chemical Society

|January 27, 2005

Resumen

Se estudiaron las propiedades explosivas del triperóxido de triacetona (TATP) y el peróxido de diacetona (DADP). El TATP es el TATP.

Área de la Ciencia:

Química Física es la química física.
Química computacional es la química computacional.
Ciencia de los materiales Ciencia de los materiales.

Sus antecedentes:

El triperóxido de triacetona (TATP) y el peróxido de diacetona (DADP) son peróxidos orgánicos con un potencial explosivo significativo.
Comprender los mecanismos de descomposición de estos compuestos es crucial para los protocolos de seguridad y manejo.

Objetivo del estudio:

Investigar las propiedades explosivas y las vías de descomposición térmica de TATP y DADP.
Para dilucidar los procesos químicos fundamentales que rigen el comportamiento energético de estos compuestos.

Principales métodos:

Se utilizó la cristalografía de rayos X para analizar las estructuras de estado sólido.
Los cálculos de la Teoría Funcional de Densidad (DFT) a nivel B3LYP con un conjunto de bases cc-pVDZ se emplearon para el análisis de la estructura electrónica.
Los estados de transición, productos intermedios y productos finales de la descomposición de TATP fueron identificados por computación.

Principales resultados:

El estudio reveló que la descomposición de TATP no está impulsada principalmente por una alta favorabilidad termoquímica.
Se predice una "explosión de entropía" como la principal fuerza impulsora de la explosión del TATP.
Se calculó que la descomposición del TATP producía una molécula de ozono y tres moléculas de acetona.

Conclusiones:

La liberación energética en las explosiones de TATP está significativamente influenciada por un aumento en la entropía en lugar de únicamente por la termoquímica.
Los métodos computacionales proporcionan información valiosa sobre los mecanismos de descomposición de materiales energéticos como el TATP.
Los hallazgos contribuyen a una comprensión más profunda del comportamiento explosivo de los peróxidos orgánicos cíclicos.

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