The synthesis of MCM-41 nanomaterial from Algerian Bentonite: The effect of the mineral phase contents of clay on the structure properties of MCM-41

Ali-Dahmane, Tewfik; Adjdir, Mehdi; Hamacha, Rachida; Villièras, Frédéric; Bengueddach, Abdelkader; Weidler, Peter G.

doi:10.1016/j.crci.2012.12.017

Cited by 33 publications

(14 citation statements)

References 28 publications

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“…Therefore, silicate minerals had been considered as green silicon sources to synthesize mesoporous silica materials. Ali-dahmane et al reported the successful synthesis of MCM-41 from bentonite with a Brunauer-Emmet-Teller (BET) surface area of 494 m 2 /g [20]; their work resolved the problem that laboratory reagents were expensive and toxic for the large-scale production of MCM-41 and revealed the relationship between the structural properties of MCM-41 and the mineral phase contents of Algerian bentonite [20]. Yu et al [21] used diatomite as silicon and aluminum sources to successfully synthesize MCM-41 with ionic liquid 1-hexadecyl-3-methylimidazolium bromide as the template.…”

Section: Introductionmentioning

confidence: 99%

Simple Synthesis and Characterization of Hexagonal and Ordered Al–MCM–41 from Natural Perlite

Chen

et al. 2019

Minerals

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Silica reagents are expensive and toxic for use in the synthesis of mesoporous silica materials. It is imperative to take an interest in green silicon sources. In this paper, we report the synthesis of hexagonal and ordered aluminum-containing mesoporous silica materials (Al–MCM–41) from natural perlite mineral without addition of silica or aluminum reagents. A pretreatment process involving acid leaching, alkali leaching, and strongly acidic cation exchange resins treatment was critical to obtain silicon and aluminum sources from natural perlite mineral. The Al–MCM–41 material was synthesized via a hydrothermal reaction with hexadecyl trimethyl ammonium bromide (CTAB) as the template and subsequent calcination. The resulting mesophase had a hexagonal and ordered mesoporous structure, confirmed by small-angle X-ray diffraction (SAXRD) and transmission electron microscopy (TEM). Al–MCM–41 material had a high Brunauer–Emmet–Teller (BET) surface area of 1024 m2/g, pore volume of 0.72 cm3/g and an average pore diameter of 2.8 nm with a pore size distribution centered at 2.5 nm. The thermal behavior of the as-synthesized samples during calcination was investigated by thermogravimetry (TG) and differential thermogravimetry (DTG) analysis. The Al–MCM–41 material showed a negative surface charge in aqueous solution with the pH value ranging from 2 to 13. The variations of chemical structures from natural perlite to Al–MCM–41 were traced by wide-angle X-ray diffraction (WAXRD) and Fourier-transform infrared spectroscopy (FTIR). A proposed mechanism for the synthesis of hexagonal and ordered mesoporous silica materials from natural perlite is discussed.

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Section: Introductionmentioning

confidence: 99%

Simple Synthesis and Characterization of Hexagonal and Ordered Al–MCM–41 from Natural Perlite

Chen

et al. 2019

Minerals

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“…The synthesis of Al-MCM-bentonite material evaluated in this work was previously reported [19]. The preparation of Al-MCM-41 from Algerian bentonite requires the following steps; firstly the alkaline melting of the bentonite, in this step the mixture of bentonite and sodium hydroxide was prepared (using a weight ratio betonite/NaOH = 1/1.2), and then calcined at 550 °C in air for 1 hour.…”

Section: Synthesis Of Al-mcm-bentonitementioning

confidence: 99%

“…In recent years and for economical and environmental considerations, researchers have being studying the possibility of replacing these laboratory reagents with raw materials that are widely available and inexpensive. Therefore, studies have reported the synthesis of mesoporous materials from halloysite [15], diatomite [16], kaolin [17], bentonite [18,19], coal fly ash [20], bottom ash [21,22], iron-ore tailing [23], copper-ore tailing [24], photonic waste [25,26], resin ash [27], husk ash [28,29], sedge ash [30], miscanthus ash [31], and volclay [32].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Lewis Acidity between Al-MCM-41 Pure Chemicals and Al-MCM-41 Synthesized from Bentonite

Ali-Dahmane

Brahmi

Hamacha

et al. 2019

Bull. Chem. React. Eng. Catal.

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This study focused on the Lewis acidity of Al-MCM-41 prepared from bentonite (Al-MCM-bentonite) as silica and aluminum source simultaneously. This acidity was compared with Al-MCM-41 synthesized from pure chemicals reagents (Al-MCM-standard). Structural analysis showed that the substitution of the silicon atom by the aluminum atom decreases the structural order of Al-MCM-standard, whereas Al-MCM-bentonite has a better structural organization. The Lewis acidity of the Al-MCM-bentonite was evaluated in allylation reaction of benzaldehyde with allyltrimethylsilane and pyridine adsorption experiments. The results showed that the difference in acidity between Al-MCM-standard and Al-MCM-bentonite is due to the amount of aluminum incorporated into the framework of our mesoporous materials. According to the EDX analysis, the incorporation of aluminum in Al-MCM-standard (Si/Al = 13.47) is more important than in Al-MCM-bentonite (Si/Al = 43.64). This explains the low acidity of Al-MCM-bentonite, and the moderate yields in the allylation reactions of benzaldehyde with allyltrimethylsilane.

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“…Samples show a probability of the presence of crystalline phases mainly in the form of: quartz (SiO 2 ), dolomite (CaMg(CO 3 ) 2 ), calcite (CaCO 3 ) and illite ((K,H 3 O)(Al,Mg ,Fe) 2 (Si,Al) 4 O 10 [(OH) 2 ,(H 2 O (Hirmas et al 2012;Ali-Dahmane et al 2014) (Fig. 3).…”

Section: Mineralogical Analysis By Drxmentioning

confidence: 99%

Estimating generalized of global impacts to water quality on soil characteristics in basin of the Great Sebkha of Oran

et al. 2018

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In basin of the Great Sebkha of Oran, water deficit linked to climate semi-aridity has forced farmers to resort to the use of underground water of poor quality, which considered as the major cause of soil degradation. The alluvial aquifer waters are particularly characterized by higher relatively concentration in dissolved salts when compared them with other aquifers of the same system. Generally, the salinity of the water increases from upstream to downstream in the direction of the Sebkha (Boualla et al. in Water Supply 17(6):1801-1812, 2017). Assessment of soil quality has become the basic work for agricultural sustainable development. The aim of this paper is to evaluate soil properties in great Sebkha of Oran basin. Georeferred soil samples were collected from ten-component analysis, and different soils were analysed for different physical and chemical attributes. Our study focuses on mineralogical analysis and geochemical prospecting using soil chemical data. Eleven indicators were selected to constitute data to assess the soil quality: sieve analysis, classification, cation exchange capacity, pH, soil organic matter, conductivity, gypsum, nature of the oxide content, nutrients (NO 3-N, NH 4-N, PO 4-P), anions content (SO 4 2− , Cl −) and mineralogical analysis. Conclusively, process and mechanism of soil quality need deep research.

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The synthesis of MCM-41 nanomaterial from Algerian Bentonite: The effect of the mineral phase contents of clay on the structure properties of MCM-41

Cited by 33 publications

References 28 publications

Simple Synthesis and Characterization of Hexagonal and Ordered Al–MCM–41 from Natural Perlite

Simple Synthesis and Characterization of Hexagonal and Ordered Al–MCM–41 from Natural Perlite

Comparison of Lewis Acidity between Al-MCM-41 Pure Chemicals and Al-MCM-41 Synthesized from Bentonite

Estimating generalized of global impacts to water quality on soil characteristics in basin of the Great Sebkha of Oran

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