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CATÁLISIS INDUSTRIAL

La mayoría de los procesos en catálisis utilizan catalizadores sólidos. Estos sólidos, de composición altamente compleja (en ocasiones llegan a tener 10 o más elementos en su fórmula), pueden ser sin embargo descritos en forma de tres componentes elementales: la fase activa, el soporte y el promotor.  ·            La fase activa, como su nombre lo indica, es la directamente responsable de la actividad catalítica.·            Sin embargo, esta fase activa puede tener un costo muy elevado, como en el caso de los metales nobles (platino, paladio, rodio, etc.) o puede ser muy sensible a la temperatura por lo cual se requiere de un soporte para dispersarla, estabilizarla y proporcionarle buenas propiedades mecánicas. El soporte es la matriz sobre la cual se deposita la fase activa y el que permite optimizar sus propiedades catalíticas. Este soporte puede ser poroso y por lo tanto presentar un área superficial por gramo elevada. Ejemplo de ello so las alúminas, sílices, kieselguhr, zeolitas, etc.·            El promotor es aquella sustancia que incorporada a la fase activa o al soporte en pequeñas proporciones, permite mejorar las características de un catalizador en cualquiera de sus funciones de actividad, selectividad o estabilidad. Como ejemplo de ello es el potasio.
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Richard -

Me podrías decir si conoces una página buena donde pueda conseguir más información de este tema? Sobre todo de ejemplos de soportes y promotores en diferentes reacciones catalizadas.

Muchas gracias
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