Abstracts Book - IMRC 2018

• SF3-P050
NANOPARTICLES OF IRON OXIDE SUPPORTED IN A
COMMERCIALLY ACTIVATED BENTONITE AND ITS CATALYTIC
EVALUATION IN THE OXIDATION OF 4-METHOXYBENZYL
ALCOHOL
Gabriela Tapia Morales 1 , José Luis Arias Téllez 1 , Antonio Gómez Córtes 2 , Yolanda Marina Vargas
Rodríguez 1 , José Alvaro Chávez Carvayar 3
1 Facultad de Estudios Superiores Cuautitlán, UNAM., Ciencias Químicas, Mexico. 2 Instituto de
Física - Universidad Nacional Autónoma de México, Física-Química, Mexico. 3 Instituto de
Investigaciones en Materiales, Materiales metálicos y cerámicos., Mexico.
For Fenton Heterogeneous oxidation, magnetic catalysts have been developed
that also allow a fast and economic separation, simplifying their recovery, such
as magnetite nanoparticles (MNPs). To improve the catalytic activity of the MNPs
of Fe3O4, these have been supported on high surface materials such as piled
montmorillonites. In this work, MNPs of iron oxides supported on a
commercially activated bentonite (Minerex) were synthesized using the
ammonia technique. The synthesized particles were characterized by DRX, MEB,
MET and nitrogen adsorption-desorption and density. The catalytic activity of
the nanoparticles in the oxidation of the 4-methoxybenzyl alcohol was evaluated
using hydrogen peroxide as an oxidant. The influence of the amount of catalyst
and oxidant, as well as the temperature effect, was also investigated. The
reaction was monitored using the gas chromatography technique using the
internal standard method, finding that in less than 15 minutes it decomposes
between 90-95% of the 4-methoxybenzyl alcohol. The identification of the
compounds obtained in the oxidation of 4-methoxybenzyl alcohol was carried
out by gas chromatography coupled to mass spectrometry, observing the
presence of 4-methoxybenzaldehyde. In conclusion, the catalyst synthesized
iron oxides / activated bentonite promoted the oxidation of 4-methoxybenzyl
alcohol reaching total mineralization.
References
1 Shaikh, M. Satanami y K. V. Ranganath, «Efficient aerobic oxidation of
alcohols using magnetically recoverable catalysts,» Catalysis Communications,
vol. 54, pp. 91-93, 2014, vol. 54, pp. 91-93, 201
2 Nidheesh, «Heterogeneous Fenton catalysts for the abatement of organic
pollutants aqueous solution:a review,» Royal Society of Chemistry, 2015.
3 Carballo, Introducción a la catálisis heterogénea, Bogotá: Universidad