oa South African Journal of Chemistry - Solid state NMR characterization and adsorption properties of lignocellulose-clinoptilolite composites prepared with siloxanes coupling agents : research article
|Article Title||Solid state NMR characterization and adsorption properties of lignocellulose-clinoptilolite composites prepared with siloxanes coupling agents : research article|
|© Publisher:||South African Chemical Institute (SACI)|
|Journal||South African Journal of Chemistry|
|Affiliations||1 University of Fort Hare, 2 University of Fort Hare, 3 University of Stellenbosch, 4 Vaal University of Technology and 5 Vaal University of Technology|
|Publication Date||Jan 2015|
|Pages||143 - 152|
|Keyword(s)||Chemical modification, Clinoptilolite, Composites, Lignocellulose, Solid state NMR and Used motor oil|
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 92mg g-1 of chemical oxygen demand removed.
Article metrics loading...