Solid state NMR characterization and adsorption properties of lignocellulose-clinoptilolite composites prepared with siloxanes coupling agents
Date
2015-02-15
Journal Title
Journal ISSN
Volume Title
Publisher
South African Chemical Institute
Abstract
ENGLISH ABSTRACT: This study reports the preparation of lignocellulose-clinoptilolite composites by means of N-terminated siloxanes as coupling agents, after acid hydrolysis. Reactions were carried out in the presence of dibutyltin dilaurate as catalyst by reacting lignocellulose modified with the coupling agents and clinoptilolite at 140 °C in DMF under nitrogen atmosphere. The light in weight and fluffy composites obtained were characterized by FT-IR, XRD, TGA, SEM and Solid State NMR. Results depicted possible chemical interactions between the two materials (lignocellulose and clinoptilolite). Used as adsorbents, the composites showed to be good candidates for the removal of used motor oil from aqueous solution, with up to 92 mg g-1 of chemical oxygen demand removed.
Description
CITATION: Vala, R. M. K. et al. 2015. Solid state NMR characterization and adsorption properties of lignocellulose-clinoptilolite composites prepared with siloxanes coupling agents. South African, 68:143-152, doi:10.17159/0379-4350/2015/V68A21.
The original publication is available at http://www.scielo.org.za
The original publication is available at http://www.scielo.org.za
Keywords
NMR, Solid state chemistry, Lignocellulose, Clinoptilolite, Chemical modification
Citation
Vala, R. M. K. et al. 2015. Solid state NMR characterization and adsorption properties of lignocellulose-clinoptilolite composites prepared with siloxanes coupling agents. South African, 68:143-152, doi:10.17159/0379-4350/2015/V68A21.