Issue 35, 2020
From the journal:

New Journal of Chemistry

A new approach to the mechanism for the acetalization of benzaldehyde over MOF catalysts†

Esteban Camu, ORCID logo *ab   Cesar Pazo, ORCID logo bc   Daniel Becerra,bc   Yoan Hidalgo-Rosa,bd   Dayan Paez-Hernandez, ORCID logo de   Ximena Zarate,bf   Eduardo Schottbcg  and  Nestor Escalona*abgh  

* Corresponding authors

a Departamento de Ingeniería Química y Bioprocesos, Facultad de Ingeniería, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, Chile
E-mail: esteban.camu@uc.cl, neescalona@ing.puc.cl

b Millennium Nuclei on Catalytic Process towards Sustainable Chemistry (CSC), Chile

c Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, Chile

d Doctorado en Fisicoquímica Molecular, Universidad Andres Bello. Av. República #275, Santiago de Chile, Chile

e Center of Applied Nanosciences (CANS), Chile República #275, Santiago de Chile, Chile

f Instituto de Ciencias Químicas Aplicadas, Theoretical and Computational Chemistry Center, Facultad de Ingeniería, Universidad Autónoma de Chile, Av.Pedro de Valdivia 425, Santiago, Chile

g Centro de Investigación en Nanotecnología y Materiales CIEN-UC, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, Chile

h Unidad de Desarrollo Tecnológico, Universidad de Concepción, Chile

Abstract

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 N2 physisorption, 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.

Graphical abstract: A new approach to the mechanism for the acetalization of benzaldehyde over MOF catalysts

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Article information

DOI
https://doi.org/10.1039/D0NJ02416C
Article type
Paper
Submitted
12 May 2020
Accepted
29 Jul 2020
First published
30 Jul 2020

New J. Chem., 2020,44, 14865-14871

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A new approach to the mechanism for the acetalization of benzaldehyde over MOF catalysts

E. Camu, C. Pazo, D. Becerra, Y. Hidalgo-Rosa, D. Paez-Hernandez, X. Zarate, E. Schott and N. Escalona, New J. Chem., 2020, 44, 14865 DOI: 10.1039/D0NJ02416C

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