Synthesis of Al-intercalated montmorillonites using microwave irradiation

Fetter, Geolar; Heredia, Gabriel Guerrero; Maubert, A.; Bosch, P.

doi:10.1039/jm9960601857

Cited by 29 publications

(13 citation statements)

References 6 publications

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“…Fetter et al presented for the first time [57] a microwaveassisted method to prepare an aluminium-pillared montmorillonite using a 10 wt% clay suspension. The authors added to this clay suspension a solution of aluminium chlorohydrate, making an Al/clay ratio of 5 mmol/g.…”

Section: Mw Assisted Preparation Of Pillared Claysmentioning

confidence: 99%

Microwaves-Mediated Preparation of Organoclays as Organic-/Bio-Inorganic Hybrid Materials

Villa¹,

Rosa²,

Corradi³

et al. 2011

COC

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An innovative approach in the field of nanomaterials is to develop modern and mild synthetic protocols that enable controlled and integrated organization of specific functional organic and biological building blocks. In this context, research on the preparation of clay-based organic-inorganic hybrid materials, i.e. organoclays, has received considerable attention because these lamellar materials not only possess highly ordered structure in 2D, but also provide interesting chemical intercalation and surface properties. As a result entrapment and orientation of various functional guest molecules into layered inorganic solids, has been well exploited.At present there is a great deal of interest in the rational design of hybrid organic-/bio-inorganic composites on the nanometer to micrometer length scales. These hybrids encompass highly selective recognition properties associated with organic and biological species, combined with catalytic, optical, and electronic properties of the inorganic lamellar framework. This paper presents an overview of microwave application in different preparation steps of organophilic clays, their modification and their addition to polymeric matrices. Particular attention has been given to the microwave-mediated hydrothermal technique, as innovative and eco-friendly protocol for the intercalation of different kinds of organic hosts into the interlayer of clay minerals. The few pioneering complete microwave-mediated preparation procedures, exploiting advantages of dielectric heating in both the synthesis of the organic host molecule and the intercalation in the clay structure, have been also highlighted.

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Section: Mw Assisted Preparation Of Pillared Claysmentioning

confidence: 99%

Microwaves-Mediated Preparation of Organoclays as Organic-/Bio-Inorganic Hybrid Materials

Villa¹,

Rosa²,

Corradi³

et al. 2011

COC

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“…The use of microwave irradiation has been reported by various authors to also speed up the PILCs synthesis process 12,16,18,33,56,57 requiring less than 15 minutes for the intercalation. Fetter et al 56 investigated ways to accelerate the intercalation step during the synthesis of PILCs by using microwave irradiation. In their study 10 wt% clay suspension was slowly added to Al chlorohydrate to give an Al/clay ratio of 5 mmol g À1 .…”

Section: Recent Advances In the Synthesis Of Pilcsmentioning

confidence: 99%

Synthesis and application of pillared clay heterogeneous catalysts for wastewater treatment: a review

2018

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“…The use of microwave for pillared clay preparation has been proposed by various researchers to improve the synthesis method in terms of energy consumption. However, the microwave irradiation is used in certain steps such as calcination [15,16] and intercalation [17] , as well as in both intercalation and calcination. [18] In the present study, we propose the use of microwave irradiation in the aging and intercalation steps.…”

Section: Introductionmentioning

confidence: 99%

Adsorption properties of microwave synthesized inorgano–organo montmorillonite

Emreol

Soycan

Yapar

2009

Asia-Pacific J Chem Eng

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The aim of this study is to determine the adsorption properties of microwave synthesized inorgano-organo montmorillonites. Microwave irradiation is preferred because of its low time and energy consumption properties, forming an advantage in industrial applications. In addition to the intercalation of Keggin and hexadecyltrimethylammonium (HDTMA + ) cations, the aging process of pillaring solution was also carried out through the microwave irradiation. Both inorgano clays, namely the parents, and their inorgano-organo derivatives, were prepared by using the same amounts of aluminum by keeping the OH − /Al 3+ and Al 3+ /clay ratios constant. The HDTMA + /clay ratio was changed in inorgano-organo clays (IOCs) during the preparation. The effects of these parameters on the surface properties and adsorption behaviors of the samples were investigated by conducting X-ray diffraction (XRD), Fourier transform infrared (FTIR) and simultaneous thermal analyses (STA), as well as batch adsorption experiments, in which phenol was used as a model pollutant. The results of XRD analyses reveal that the intercalation is successfully achieved. The existence of the Keggin and HDTMA + cations was observed in FTIR spectra of the samples. Through the STA, it was determined that the existence of organic layer increases the dehydroxylation temperature and the thermal behavior of inorgano-organo montmorillonites strongly depends on the structure of the parent clay. An increase in the adsorption efficiencies with increasing HDTMA + /clay ratio was observed, except with the highest ratio. The behavior of this sample was explained by the formation of the second HDTMA + layer leading to the hydrophilic surface formation. 

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Synthesis of Al-intercalated montmorillonites using microwave irradiation

Cited by 29 publications

References 6 publications

Microwaves-Mediated Preparation of Organoclays as Organic-/Bio-Inorganic Hybrid Materials

Microwaves-Mediated Preparation of Organoclays as Organic-/Bio-Inorganic Hybrid Materials

Synthesis and application of pillared clay heterogeneous catalysts for wastewater treatment: a review

Adsorption properties of microwave synthesized inorgano–organo montmorillonite

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