Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/19717
Title: | Increasing the efficiency of silicon and aluminum extraction from Volclay by a water iteration treatment for the synthesis of MCM-41 nanomaterials |
Author: | Adjdir, Mehdi Bendeddouche, Choukry K. Benhaoua, Hadj Kaid, Mhamed Karmaoui, Mohamed Boudinar, Mohamed Weidler, Peter G. |
Keywords: | MESOPOROUS MOLECULAR-SIEVES COAL FLY-ASH ZEOLITES |
Issue Date: | 2015 |
Publisher: | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
Abstract: | This work aims to reduce the prices of a wide range of nanomaterials which are unreachable in the industry by using natural sources as silicon and aluminum precursors. In a previous work, silicon and aluminum have been extracted from Volclay after applying the alkaline fusion process at 550 degrees C and a water treatment of this fused clay by adopting a weight ratio (1:4, fusion mass:H2O) to synthesize Al-MCM-41 nanomaterials. In this study, the weight ratio of fusion mass:H2O was increased to 1:8 to synthesize a highly structurally ordered MCM-41 under the same reaction conditions. The Al-MCM-41 nanomaterials are investigated by inductively coupled plasma optical emission spectrometry (ICP-OES), powder X-ray diffraction (XRD), N-2 adsorption-desorption measurements and scanning electron microscopy (ESEM). As a result, the increase in the weight ratio fusion mass:H2O generates more silica and aluminum, which allows the formation of well-ordered MCM-41 nanomaterials with high pore volume (0.70 cm(3)/g), high surface area (1044 m(2)/g), and uniform mesoporous diameter (3.67 nm); as a consequence, the increase in the weight ratio fusion mass:H2O leads to an increase in the mass of Al-MCM-41 (9.3 g for 1:8 compared to 5 g for 1:4), whereas the yield of production of mesoporous materials increases to 86%. (C) 2014 Acadamie des sciences. Published by Elsevier Masson SAS. All rights reserved. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19717 |
DOI: | 10.1016/j.crci.2014.07.003 |
ISSN: | 1631-0748 |
Publisher Version: | 10.1016/j.crci.2014.07.003 |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Increasing the efficiency of silicon and aluminum extraction from Volclay by a water iteration treatment for the synthesis of MCM-41 nanomaterials_10.1016j.crci.2014.07.003.pdf | 596.1 kB | Adobe PDF |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.