A new approach to the mechanism for the acetalization of benzaldehyde over MOF catalysts
Autor
Camú, Esteban
Pazo, Cesar
Becerra, Daniel
Hidalgo-Rosa, Yoan
Páez-Hernández, Dayán
Zárate, Ximena
Schott V, Eduardo
Escalona, Nestor
Resumen
The benzaldehyde acetalization reaction catalyzed by UiO-66, and its fluorinated analog UiO-66F, was carried out in a batch-type reactor at room temperature and atmospheric pressure, and the full kinetic study was performed using the Langmuir-Hinshelwood and Eley-Rideal models. It was established that the Eley-Rideal model is the one that best fits the experimental data. The catalytic results indicated that both MOFs enable carrying out the acetalization reaction. However, UiO-66F has the highest activity, which could be attributed to its high acidity. Both structures were characterized by N2physisorption, thermogravimetry, powder X-ray diffraction, potentiometric titrations, and infrared spectroscopy. The highest acidity displayed by UiO-66F was explained by DFT studies and experimental studies.
Colecciones
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
Article
Insights into the selective sensing mechanism of a luminescent Cd(II)-based MOF chemosensor toward NACs: roles of the host–guest interactions and PET processes (2021)
Hidalgo-Rosa, Yoan; Mena-Ulecia, Karel; Treto-Suárez, Manuel Alejandro; Schott V, Eduardo; Páez-Hernández, Dayán; Zárate, Ximena P. (Springer, 2021-08)The structural and photophysical properties of the [Cd2(H2L)2(H2O)5].5H2O (where H4L is the ligand 5,5'-((thiophene-2,5-dicarbonyl)bis(azanediyl))diisophthalic acid labeled as Cd-MOF), as well as the elucidation of the ... -
Article
Fluorescence turn-on and turn-off mechanisms of a dual-selective chemosensor of Bi3+ and pH changes: Insights from a theoretical perspective (2020)
Treto-Suárez, Manuel Alejandro; Hidalgo-Rosa, Yoan; Schott V, Eduardo; Páez-Hernández, Dayán; Zárate, Ximena P. (Elsevier Ltd, 2021-02)The N-hydroxy 1,8-naphthalimide (LH) is an optical dual-selective chemosensor toward Bi3+ ions as well as pH changes. In specific, this senor is selective to Bi3+ ions, which turn-on the fluorescence upon their interaction; ... -
Article
Tunning the optical properties of a photocatalytic metal-organic framework by means of molecular modelling (2023)
Treto-Suárez, Manuel A.; Hidalgo-Rosa, Yoan; Ulecia, Karel Mena; Páez-Hernández, Dayán; Koivisto, Bryan D.; Zarate, Ximena; Schott, Eduardo (Royal Society of Chemistry, 2022)A theoretical study of reported isostructural metal-organic frameworks (MOFs) based on MIL-125-Ti4+ was performed to understand the optical properties and facilitate the rational design of new materials with potentially ...