Structural and morphological peculiarities of montmorillonite treated with microwave radiation

Chetverikova, A. G.; Kanygina, O. N.; Filyak, M. M.; Ogerchuk, S.A.

doi:10.30791/0015-3214-2019-3-5-12

Cited by 2 publications

(4 citation statements)

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“…2). These energies were compared with the empirical data [11]. It should be noted, that we have found a rough estimation of the activation energy.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

“…In paper [11], it was proven empirically that the degree of montmorillonite amortization is defined by conditions of the high-frequency microwave field treatment. Namely, the microwave treatment of powdered samples resulted in a few effects.…”

Section: Figmentioning

confidence: 99%

“…We use empirical data about destruction of montmorillonite lattice induced by a microwave field treatment for the sake of illustration. A more detailed discussion of these results can be found in [11]. The object of the empirical study was a nature-occurring montmorillonite clay, its chemical composition is discussed in [12].…”

Section: Materials and Experimentsmentioning

confidence: 99%

“…Structural changes in the crystal structure of montmorillonite induced by the radiation treatment[11] …”

mentioning

confidence: 99%

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Model of destruction of montmorillonite crystal structure in a microwave field

Makarov¹,

Kanygina²

2020

Nanosystems: Phys. Chem. Math.

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We address amorphization of montmorillonite crystal structure. Powdered montmorillonite samples with an effective particle diameter D ≤ 630 µm were treated by microwave field with the frequency 2.45 GHz and power 750 W for ten minutes in different environments. The first sample was treated in an air environment, the second one in a humid environment. The third sample was a ceramic mass with 10% concentration of mixing water (with respect to the total mass). The model describing amorphization is based on results of X-ray analysis. Activation energies were evaluated for covalently and ionically bound oxygen ions, hydroxyl groups, and silicon (aluminum) ions. It is shown that the amorphization is carried out in four stages. In fractions of the energy consumption of the last stage the first one consumes 7 ÷ 9%, the second one takes 13 ÷ 15%, and the third one takes 49 ÷ 59%.

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“…2). These energies were compared with the empirical data [11]. It should be noted, that we have found a rough estimation of the activation energy.…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Section: Figmentioning

confidence: 99%

Section: Materials and Experimentsmentioning

confidence: 99%

“…Structural changes in the crystal structure of montmorillonite induced by the radiation treatment[11] …”

mentioning

confidence: 99%

See 2 more Smart Citations