Increasing the efficiency of silicon and aluminum extraction from Volclay by a water iteration treatment for the synthesis of MCM-41 nanomaterials

Adjdir, Mehdi; Bendeddouche, Choukry Kamel; Benhaoua, Hadj; Kaid, M’hamed; Karmaoui, Mohamed; Boudinar, Mohamed; Weidler, Peter G.

doi:10.1016/j.crci.2014.07.003

Cited by 14 publications

(3 citation statements)

References 16 publications

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“…This result confirms that the highly ordered hexagonal phase was successfully synthesized. The well-resolved patterns with strong intensity of the main peak (100 plane) and defined intensity of (110) and (200) reflections denoted very regular channel array in contrast to other mesoporous MCM-41 obtained at similar reaction condition using clay minerals as the inorganic source. ,, This result can be attributed to the molar ratio of precursor gel achieved, which was suitable to favor the complete silica walls condensation.…”

Section: Results and Discussionmentioning

confidence: 81%

“…The inorganic source can be effectively extracted by alkaline fusion or alkali dissolution processes, which generate new soluble phases: sodium silicate (Na 2 SiO 3 ) and sodium aluminate (NaAlO 2 ). On the other hand, Adjdir et al demonstrated that after the alkaline fusion an appropriate water treatment of clay is key to replacing laboratory-grade reagents. The obtained results indicate that during the water treatment, the increase in the weight ratio fusion mass: H 2 O from 1:4 to 1:8 allows extracting more silica and aluminum from fused volclay resulting in mesoporous production yield intensifications.…”

Section: Introductionmentioning

confidence: 99%

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Highly Ordered Mesoporous Al-MCM-41 Synthesis through Valorization of Natural Sediment

Boldrini

Angeletti

Cervellini

et al. 2019

ACS Sustainable Chem. Eng.

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In this work, natural sediment was used as an alternative and green inorganic source to synthesize valuable structured Al-MCM-41 material by a hydrothermal process. This intertidal sediment contains a mixture of clay minerals (montmorillonite and ilite) and minerals (quartz and feldspar) providing large SiO2 (∼64%) and Al2O3 (∼15%) content which were efficiently extracted by alkaline fusion. The synthesized mesoporous material was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), diffuse reflectance infrared Fourier transform spectroscopy (FT-IR), N2 physisorption, and 27Al solid-state magic angle spinning nuclear magnetic resonance spectroscopy (27Al MAS NMR). The results achieved reveal that pure and highly ordered hexagonal mesoporous aluminosilicate MCM-41 containing structural aluminum has been successfully synthesized. Moreover, it was evidenced that the obtained solid presents uniform pore size distribution (3.6 Å) as well as high pore volume (0.59 cm3g–1) and elevated specific surface area (807 m2g–1).

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Section: Results and Discussionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Highly Ordered Mesoporous Al-MCM-41 Synthesis through Valorization of Natural Sediment

Boldrini

Angeletti

Cervellini

et al. 2019

ACS Sustainable Chem. Eng.

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show abstract

“…15 Several studies have been devoted to the search of cheaper raw materials that could overcome the high costs associated with the synthesis of MCM-41. [16][17][18][19] Different types of low cost materials as coal fly ash and clays have been used as alternative sources of silica and alumina in mesoporous materials synthesis, 20,21 which was proven to be a way to decrease the costs involved in the synthesis processes.…”

Section: Introductionmentioning

confidence: 99%

Al-MCM-41 Synthesized from Kaolin via Hydrothermal Route: Structural Characterization and Use as an Efficient Adsorbent of Methylene Blue

Santos¹,

Costa²,

Oliveira³

et al. 2018

J. Braz. Chem. Soc.

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The mesoporous material Al-Mobil Composition of Matter No. 41 (Al-MCM-41) was successfully obtained from kaolin, a low cost raw material, by means of hydrothermal route. The process of synthesis of Al-MCM-41 was based on calcination of kaolin, dealumination by acid treatment, hydrothermal synthesis in alkaline medium and surfactant extraction. The characterization of the obtained mesoporous material was carried out by techniques such as: X-ray diffraction, infrared vibrational spectroscopy, 29 Si and 27 Al solid state nuclear magnetic resonance, scanning electron microscopy, transmission electron microscopy and N 2 adsorption-desorption. The X-ray diffraction at low angles allowed the determination of the cell parameter, which was 4.02 nm. The analyses of scanning and transmission electron microscopy revealed important morphological properties of the synthesized material. N 2 adsorption/desorption showed a Brunauer-Emmett-Teller (BET) specific surface area of 1,303 m 2 g-1 , pore volume of 1.23 cm 3 g-1 and average diameter of 2.45 nm. The mesoporous material presented a maximum adsorption capacity of 316 mg g-1 for the cationic dye methylene blue (MB) in a concentration typical of industrial effluents, which makes it a potential adsorbent for MB removal from wastewaters.

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An extensive review on mesoporous silica from inexpensive resources: properties, synthesis, and application toward modern technologies

Saravanan

Sudalai

Dharaneesh

et al. 2022

J Sol-Gel Sci Technol

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Increasing the efficiency of silicon and aluminum extraction from Volclay by a water iteration treatment for the synthesis of MCM-41 nanomaterials

Cited by 14 publications

References 16 publications

Highly Ordered Mesoporous Al-MCM-41 Synthesis through Valorization of Natural Sediment

Highly Ordered Mesoporous Al-MCM-41 Synthesis through Valorization of Natural Sediment

Al-MCM-41 Synthesized from Kaolin via Hydrothermal Route: Structural Characterization and Use as an Efficient Adsorbent of Methylene Blue

An extensive review on mesoporous silica from inexpensive resources: properties, synthesis, and application toward modern technologies

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