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Advances in Materials Science and Engineering
Volume 2015 (2015), Article ID 325463, 11 pages
http://dx.doi.org/10.1155/2015/325463
Research Article

Porous Silicates Modified with Zirconium Oxide and Sulfate Ions for Alcohol Dehydration Reactions

1Instituto Tecnológico de Ciudad Madero, Prolongación Bahía de Aldair, Avenida de las Bahías, Parque de la Pequeña y Mediana Industria, Altamira, TAMPS, Mexico
2Centro de Investigación en Materiales Avanzados (CIMAV), Avenida Miguel de Cervantes 120, 31109 Chihuahua, CHIH, Mexico
3División Académica de Ciencias Agropecuarias, Universidad Juárez Autónoma de Tabasco, Carretera Teapa Km 25, Ranchería la Huasteca, 86600 Centro, TAB, Mexico

Received 2 September 2015; Accepted 30 November 2015

Academic Editor: Philippe Miele

Copyright © 2015 Heriberto Esteban Benito et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Porous silicates were synthesized by a nonhydrothermal method, using sodium silicate as a source of silica and cetyltrimethylammonium bromide as a template agent. Catalysts were characterized using thermogravimetric analysis, N2 physisorption, X-ray diffraction, FTIR spectroscopy, pyridine adsorption, potentiometric titration with -butylamine, scanning electronic microscopy, and transmission electronic microscopy. The surface area of the materials synthesized was greater than 800 m2/g. The introduction of zirconium atoms within the porous silicates increased their acid strength from −42 to 115 mV, while the addition of sulfate ions raised this value to 470 mV. The catalytic activity for the dehydration of alcohols yields conversions of up to 70% for ethanol and 30% for methanol.