Infrared spectra of muscovites as affected by chemical composition, heating and particle size

Sayin, Mahmut; Reichenbach, H. Graf von

doi:10.1180/claymin.1978.013.3.01

Cited by 11 publications

(5 citation statements)

References 18 publications

(4 reference statements)

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“…The transmission band at 828 cm −1 was attributed to the stretching motion of Al-O bonds [32]. However, its height intensity seems to be decreased after LiNO 3 treatment due to the increment of octahedral substitution content; such as Fe ions between the aluminosilicate layers in muscovite particles [30]. Reduction of this peak intensity is in good agreement with the results obtained in XRF analysis.…”

Section: Intercalation Of LI + Ions Into Muscovitesupporting

confidence: 87%

“…The infrared transmission bands detected at 751 and 530 cm −1 were corresponded to the Si-O-Al in-plane and Si-O-Al VI vibrational motion, respectively. The intensity of the transmission band at 751 cm −1 was affected by the amount of octahedral Al present in the aluminosilicate layers [30]. However, the intensity of this band remained constant in the spectra of Li-Mus and CTA-Mus (figure 5b and c), indicating that the amount of octahedral Al in muscovite was not affected by both LiNO 3 and CTAB treatments.…”

Section: Intercalation Of LI + Ions Into Muscovitementioning

confidence: 90%

“…In addition, the transmission band appeared at around 3624 cm −1 was due to the stretching motion of OH groups in muscovite particles. Meanwhile, the infrared transmission bands in region between 1300-500 cm −1 (figure 4) correspond to the vibrations in the aluminosilicate layers [30].…”

Section: Intercalation Of LI + Ions Into Muscovitementioning

confidence: 99%

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Enhanced intercalation of organo-muscovite prepared via hydrothermal reaction at low temperature

et al. 2019

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Muscovite clay is an ideal reinforcing filler due to its high-aspect ratio. However, it does not swell in water, making it hard to be treated and intercalated. In this study, ion exchange treatment is carried out on muscovite clay using cetyltrimethylammonium bromide (CTAB) cations via two-step intercalation method. The intercalation steps included: inorganic-inorganic ion exchange treatment and inorganic-organic ion exchange treatment under hydrothermal conditions. The intercalation of muscovite particles was examined with various techniques to analyse the physical and chemical changes. Furthermore, the hydrothermal conditions for effective CTA + ion intercalation within muscovite interlayers prepared via the hydrothermal process at low temperature, 180 • C, under different hydrothermal reaction times and CTAB/Li-Mus mass ratio were investigated. Fourier transform infra-red (FTIR) analysis revealed that the CTA + ions are diffused into the interlayers of aluminosilicate and formed a strong electrostatic bond with the clay surface. X-ray powder diffraction analysis showed that the interplanar spacing in the organo-muscovite samples is almost identical as the hydrothermal reaction time is prolonged beyond 12 h. An optimum limit of the CTAB to Li-Mus ratio is observed as the d 002 plane spacing is increased with an increase of the mass ratio of CTAB to Li-Mus up to 1.0 C and decreased with a further increase in the mass ratio. In addition, the intercalated CTA + chains are homogenously distributed and formed a paraffin-like arrangement in the muscovite clay. Besides, the structure of aluminosilicate layers is not affected or damaged after both treatments according to FTIR analysis.

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Section: Intercalation Of LI + Ions Into Muscovitesupporting

confidence: 87%

Section: Intercalation Of LI + Ions Into Muscovitementioning

confidence: 90%

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Enhanced intercalation of organo-muscovite prepared via hydrothermal reaction at low temperature

et al. 2019

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“…However, in the leaching process it returns to slightly higher frequencies. The intensity of the band at 452 -465 cm -1 , associated in all cases with T-O bending vibrations, barely changes its position throughout the activation process [22,23]. This band provides an indication of the degree of "amorphisation" of the material, since its intensity does not depend on the degree of crystallisation.…”

Section: Resultsmentioning

confidence: 92%

The Effect of Heat Treatment on Alkali Activated Materials

Būmanis

Vītola

Fernández-Jiménez

et al. 2017

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The primary object of the present research was to investigate the porous low calcium alkali activated material (AAM). Traditionally Na+ ions for alkali activation solution ensure highly alkaline media which enhances the dissolution of amorphous phase in the raw materials forming solid cementitious material with sodium aluminosilicate hydrate (N-A-S-H) structure afterwards. Almost all alkali ions are partially hydrated filling the pores in the gel structure (N-A-S-H gel, type zeolite precursor) and neutralizing the charge on Al(OH) -4 groups. These alkali ions are available for leaching in water environment. Due to this property the application of porous AAM in this research is related to the water treatment systems similar to those of natural zeolites which are considered as effective sorbent because of their porous structure, high specific surface and ion exchange. Porous AAM was obtained from metakaolin, sodium silicate glass, modified sodium silicate solution with Ms = 1.68 and diethylene glycol (DEG) aluminium paste as pore forming agent. The density of AAM was 1150 ± 12 kg/m 3 and compressive strength fc > 12 MPa. The effect of heat treatment to microstructure and structural properties of AAM was investigated. Heat treatment is an effective method for changing the alkali leaching kinetic form AAM structure.

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“…The analytical techniques of X-ray diffraction and major oxide analysis are the primary means used to elucidate I/S crystal chemistry (MacEwan and Ruiz-Amil, 1975;Hower et al, 1976;Reynolds, 1980;Srodofi et.al., 1986;Eberl and Srodofi, 1988). Ancillary techniques such as electron microscopy (Nadeau et al, 1984a(Nadeau et al, , 1984b(Nadeau et al, , 1984cInoue et al, 1987;Ahn and Buseck, 1990), IR spectroscopy (Juo and White, 1969;Farmer and Velde, 1973;Sayin and Reichenbach, 1978;Velde, 1983) and nuclear magnetic resonance spectroscopy (Kirkpatrick et al, 1986;Weiss et al, 1987;Altaner et al, 1988;Woessner, 1989) have provided additional constraints on the crystallographic and chemical details of I/S. Theoretical electrostatic potential calculations have also improved our perception of 2:1 pbyllosilicate structures (Giese, 1971;Bleam, 1990), and it appears that the ability to predict large clay mineral structures accurately via ab initio electron wavefunction calcula-J Present address: Department of Geology, The University of Georgia, Athens, Georgia 30602.…”

Section: Introductionmentioning

confidence: 99%

Far-Infrared Study of the Interlayer Torsional-Vibrational Mode of Mixed-Layer Illite/Smectites

Schroeder

1992

Clays and clay miner.

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Abstract--Investigation of mixed-layer illite/smectites with far-infrared (FIR) spectroscopy indicates the presence of torsional mode absorption bands associated with interlayer fixed-K sites. By contrast, hydrated montmorillonitic interlayer cation sites are transparent in the far IR. The presence or absence of bands for interlayer cation sites appears to be related to both the magnitude and site of negative layer charge within the 2:1 layer structure. The bimodal nature of illite/smectite spectra leads to the suggestion that two different fixed-K environments occur within illite/smectite structures. These two environments are controlled by the composition of the octahedral sheet. The torsional modes at 112 and 89 cm ~ represent fixed-K sites influenced, respectively, by an Al-rich, high-charge dioctahedral layer and a heterogeneous A1-Fe-Mg-bearing, low-charge layer. A general trend of increasing absorption of the 112 cm -1 band, relative to the 89 cm 1 band, is observed in a typical diagenetic illite/smectite sequence of Miocene shales from the Gulf of Mexico sedimentary basin. The absorbance strength of both torsional bands is also seen to increase with increasing degree of illitization and the amount of fixed potassium in the illite/smectite. These observations are consistent with the concept of shales undergoing illitization during burial diagenesis by both the collapse of high-charge smectite layers to form illite layers (i.e., transformation) and the formation of new high-charge (-0.9) illite layers at the expense of smectite layers (i.e., dissolution/ neoformation).

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Infrared spectra of muscovites as affected by chemical composition, heating and particle size

Cited by 11 publications

References 18 publications

Enhanced intercalation of organo-muscovite prepared via hydrothermal reaction at low temperature

Enhanced intercalation of organo-muscovite prepared via hydrothermal reaction at low temperature

The Effect of Heat Treatment on Alkali Activated Materials

Far-Infrared Study of the Interlayer Torsional-Vibrational Mode of Mixed-Layer Illite/Smectites

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