Open AccessHierarchization of Zeolites A and X Using Bacterial Cellulose as Macroporous Support
Author(s) -
Raquel A. Bessa,
André Luís Sousa Pereira,
Morsyleide de Freitas Rosa,
Michael W. Anderson,
Adonay R. Loiola
Publication year - 2021
Publication title -
journal of the brazilian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.337
H-Index - 70
eISSN - 1678-4790
pISSN - 0103-5053
DOI - 10.21577/0103-5053.20210073
Subject(s) - cellulose , chemical engineering , infrared spectroscopy , adsorption , materials science , ionic bonding , scanning electron microscope , ion exchange , hydrothermal circulation , ionic liquid , chemistry , organic chemistry , composite material , catalysis , ion , engineering
In this work, we studied the formation of hierarchical porous cartridges by means of bacterial cellulose impregnation with the zeolites A and X. Cellulose was successfully produced by Komagataeibacter genus and the zeolites were obtained by hydrothermal route. The composites were formed using both oxidized and non-oxidized cellulose. Different characterization techniques were used to analyze the resulting materials like powder X-ray diffraction, spectroscopic techniques (infrared vibrational spectroscopy and nuclear magnetic resonance), electron microscopy, thermal analyses, as well as ionic exchange experiments. The results show that the composites present layers with large voids among them, formed by cellulose nanofibrils tangling the particles in the oxidized samples, and shiftings in the bands referent to the carboxilyc groups and hydrogen bondings. The oxidation step for the cellulose seems to be important for the hierarchization and a positive effect on the cartridges is found for Ca2+ ionic exchange tests. Thus, these components can be successfully mixed to form cartridges with potential use at gas and liquid adsorption technologies.