Un estudio cinético de la oxo-transferencia fotoinducida usando un complejo de Mo anclado a TiO2

Autores/as

  • Julián E. Sánchez-Velandia Universidad Industrial de Santander
  • Edgar A. Páez-Mozo Universidad Industrial de Santander
  • Fernando Martínez-Ortega Universidad Industrial de Santander

DOI:

https://doi.org/10.17533/udea.redin.20200477

Palabras clave:

flujo fotónico, fotooxidación selectiva, complejo dioxo-Molibdeno, rendimiento cuántico

Resumen

El estudio cinético de la reacción de transferencia de átomos de oxígeno (TAO) foto asistida se estudió usando un complejo de dioxo-Mo anclado al TiO2, estimulada por la luz en condiciones ambientales usando trifenilfosfina como molécula modelo. La cinética de la reacción TAO fue estudiada con tres sistemas catalíticos anclados al TiO2: 4,4’-dicarboxilato-2,2’-bipiridina-dioxocloromolibdeno (MoO2L/TiO2), H2MoO4 (H2MoO4/TiO2) y óxido de molibdeno (MoO3/ TiO2)..  El catalizador MoO2L/TiO2 permitió la conversión más alta del 90% y una selectividad (al óxido de fosfina) cercana al 100%. MoO3/TiO2 no permitió la oxo-transferencia sugiriendo la importancia del ligando bipiridinico como una conexión electrónica entre la unidad MoO2L y el TiO2. Adicionalmente, se observó que cuando se incrementa el flujo fotónico, el rendimiento cuántico y la concentración inicial de la PPh3, aumenta la velocidad de reacción de la TAO para el sistema MoO2L/TiO2.

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Biografía del autor/a

Julián E. Sánchez-Velandia, Universidad Industrial de Santander

Centro de Investigación en Catálisis, Escuela de Química, Facultad de Ciencias.

Edgar A. Páez-Mozo, Universidad Industrial de Santander

Centro de Investigación en Catálisis, Escuela de Química, Facultad de Ciencias

Fernando Martínez-Ortega, Universidad Industrial de Santander

Centro de Investigación en Catálisis, Escuela de Química, Facultad de Ciencias. Profesor

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Publicado

2021-05-14

Cómo citar

Sánchez-Velandia, J. E., Páez-Mozo, E. A., & Martínez-Ortega, F. (2021). Un estudio cinético de la oxo-transferencia fotoinducida usando un complejo de Mo anclado a TiO2. Revista Facultad De Ingeniería Universidad De Antioquia, (98), 83–93. https://doi.org/10.17533/udea.redin.20200477

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