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K-montmorillonite

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Journal Article

Structural organization of Na- and K-montmorillonite suspensions response to osmotic and thermal stresses Available to Purchase

K. Faisandier, C. H. Pons, D. Tchoubar, F. Thomas
Published: 01 December 1998
Clays and Clay Minerals (1998) 46 (6): 636–648.
...K. Faisandier; C. H. Pons; D. Tchoubar; F. Thomas GeoRef, Copyright 2004, American Geological Institute. 1998 ...
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Journal Article

Aggregation in Na-, K- and Ca-montmorillonite dispersions, characterized by impedance spectroscopy Available to Purchase

G. ROY, M. PELLETIER, F. THOMAS, C. DESPAS, J. BESSIÈRE
Journal: Clay Minerals
Published: 01 April 2000
Clay Minerals (2000) 35 (2): 335–343.
...G. ROY; M. PELLETIER; F. THOMAS; C. DESPAS; J. BESSIÈRE Abstract Montmorillonite-water-cation systems were characterized using high-frequency impedance spectroscopy by studying the influence of the solid concentration and the nature of the exchangeable cation (Na + , K + , Ca 2...
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View PDF for article title, Aggregation in Na-, <span class="search-highlight">K</span>- and Ca-<span class="search-highlight">montmorillonite</span> dispersions, characterized by impedance spectroscopy
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Journal Article

High-pressure differential thermal analysis (HP-DTA) of the dehydroxylation of Na-rich montmorillonite and K-exchanged montmorillonite Available to Purchase

A. F. Koster van Groos, Stephen Guggenheim
Published: 01 December 1987
American Mineralogist (1987) 72 (11-12): 1170–1175.
...A. F. Koster van Groos; Stephen Guggenheim Abstract High-pressure differential thermal analysis ( hp-dta ) of the dehydroxylation of a Na-rich montmorillonite (Clay Minerals Society Source Clay SWy-1) and of the same montmorillonite after being K-exchanged was carried out at pressures to 2.5 kbar...
View PDF for article title, High-pressure differential thermal analysis (HP-DTA) of the dehydroxylation of Na-rich <span class="search-highlight">montmorillonite</span> and <span class="search-highlight">K</span>-exchanged <span class="search-highlight">montmorillonite</span>
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Journal Article

Adsorption of ethylenediamine (EDA) on montmorillonite saturated with different cations; III, Na-, K- and Li-montmorillonite; ion-exchange, protonation, co-ordination and hydrogen-bonding Available to Purchase

R. D. Laura, P. Cloos
Published: 01 March 1975
Clays and Clay Minerals (1975) 23 (1): 61–69.
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Journal Article

Immobilization of α-amylase onto K-10 montmorillonite: characterization and comparison of activity in a batch and a fixed-bed reactor Available to Purchase

G. SANJAY, S. SUGUNAN
Journal: Clay Minerals
Published: 01 December 2005
Clay Minerals (2005) 40 (4): 499–510.
DOI: https://doi.org/10.1180/0009855054040187
...G. SANJAY; S. SUGUNAN Abstract α-amylase was immobilized on acid-activated montmorillonite K-10 via adsorption and covalent linkage. The immobilized enzymes were characterized by X-ray diffraction (XRD), surface area measurements, 27 Al nuclear magnetic resonance (NMR) and scanning electron...
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View PDF for article title, Immobilization of α-amylase onto <span class="search-highlight">K</span>-10 <span class="search-highlight">montmorillonite</span>: characterization and comparison of activity in a batch and a fixed-bed reactor
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Journal Article

Influence of counterion species on the dehydroxylation of Ca 2+ -, Mg 2+ -, Na + - and K + -exchanged Wyoming montmorillonite Available to Purchase

H. J. Bray, S. A. T. Redfern
Published: 01 April 2000
Mineralogical Magazine (2000) 64 (2): 337–346.
...H. J. Bray; S. A. T. Redfern Abstract The dehydroxylation of Ca-, K-, Mg- and Na-saturated Wyoming montmorillonite has been studied by thermogravimetry (TG), infrared (IR) spectroscopy and X-ray diffraction (XRD). Samples saturated with either Ca 2+ or Mg 2+ show a predominantly diffusion...
FIGURES
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Second thumbnail for: Influence of counterion species on the dehydroxyla...
Third thumbnail for: Influence of counterion species on the dehydroxyla...
View PDF for article title, Influence of counterion species on the dehydroxylation of Ca 2+ -, Mg 2+ -, Na + - and <span class="search-highlight">K</span> + -exchanged Wyoming <span class="search-highlight">montmorillonite</span>
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Journal Article

Adsorption of 137 Cs on montmorillonite and illite; effect of charge compensating cation, ionic strength, concentration of Cs, K and fulvic acid Available to Purchase

Siobhan Staunton, Muriel Roubaud
Published: 01 April 1997
Clays and Clay Minerals (1997) 45 (2): 251–260.
... compensating cation, ionic strength, concentration of Cs, concentration of K and concentration of a soil-extracted fulvic acid. A Freundlich isotherm has been found to fit experimental data well for levels of adsorbed cesium in the range 10 (super -7) to 1 mol kg (super -1) . Evidence of surface heterogeneity...
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Journal Article

Influence of potassium concentration on the swelling and compaction of mixed (Na,K) ion-exchanged montmorillonite Free

J. H. Denis, M. J. Keall, P. L. Hall, G. H. Meeten
Journal: Clay Minerals
Published: 01 June 1991
Clay Minerals (1991) 26 (2): 255–268.
Add to Citation Manager for Influence of potassium concentration on the swelling and compaction of mixed (Na,<span class="search-highlight">K</span>) ion-exchanged <span class="search-highlight">montmorillonite</span>
Journal Article

Diagenesis of Oligocene-Miocene vitric tuffs to montmorillonite and K-feldspar deposits, Durango, Mexico Available to Purchase

Liberto de Pablo-Galan
Published: 01 August 1990
Clays and Clay Minerals (1990) 38 (4): 426–436.
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Journal Article

Dehydration of K-exchanged montmorillonite at elevated temperatures and pressures Available to Purchase

A. F. Koster van Groos, Stephen Guggenheim
Published: 01 June 1986
Clays and Clay Minerals (1986) 34 (3): 281–286.
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Journal Article

Diffraction effects calculated for structural models of K-saturated montmorillonite containing different types of defects Free

V. A. Drits, A. Plancon, B. A. Sakharov, G. Besson, S. I. Tsipurski, C. Tchoubar
Journal: Clay Minerals
Published: 01 September 1984
Clay Minerals (1984) 19 (4): 541–561.
Add to Citation Manager for Diffraction effects calculated for structural models of <span class="search-highlight">K</span>-saturated <span class="search-highlight">montmorillonite</span> containing different types of defects
Journal Article

Montmorillonite-asulam interactions; II, Catalytic decomposition of asulam adsorbed on Mg (super -) , Ba (super -) , Ca (super -) , Li (super -) , Na (super -) , K (super -) and Cs (super -) clay Free

G. G. Ristori, P. Fusi, M. Franci
Journal: Clay Minerals
Published: 01 April 1981
Clay Minerals (1981) 16 (2): 125–137.
Add to Citation Manager for <span class="search-highlight">Montmorillonite</span>-asulam interactions; II, Catalytic decomposition of asulam adsorbed on Mg (super -) , Ba (super -) , Ca (super -) , Li (super -) , Na (super -) , <span class="search-highlight">K</span> (super -) and Cs (super -) clay
Journal Article

Ca-K exchange reaction and interstratification in montmorillonite Available to Purchase

A. Inoue, H. Minato
Published: 01 December 1979
Clays and Clay Minerals (1979) 27 (6): 393–401.
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Journal Article

Etude des facteurs influencant l'evolution structurale de la montmorillonite K et sa reversibilite Free

J. P. Gaultier, J. Mamy
Journal: Clay Minerals
Published: 01 June 1978
Clay Minerals (1978) 13 (2): 139–146.
Add to Citation Manager for Etude des facteurs influencant l&#x27;evolution structurale de la <span class="search-highlight">montmorillonite</span> <span class="search-highlight">K</span> et sa reversibilite
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XRD profiles of (a) Li- and (b) K-montmorillonite from 2 to 32°2𝛉 under various RH conditions and at 70°C. The intensity scale of this part of the profiles was expanded by a factor of three.

XRD profiles of (a) Li- and (b) K-montmorillonite from 2 to 32°2𝛉 under va... Available to Purchase

Published: 01 April 2011
Figure 1. XRD profiles of (a) Li- and (b) K-montmorillonite from 2 to 32°2𝛉 under various RH conditions and at 70°C. The intensity scale of this part of the profiles was expanded by a factor of three.
Image
Evolution of interlayer of 1-, 2-, and 3-layer hydrated K-montmorillonite as a function of temperature.

Evolution of interlayer of 1-, 2-, and 3-layer hydrated K-montmorillonite a... Available to Purchase

Published: 01 October 2010
F igure 4. Evolution of interlayer of 1-, 2-, and 3-layer hydrated K-montmorillonite as a function of temperature.
Journal Article

Effect of layer charge on the crystalline swelling of Na + , K + and Ca 2+ montmorillonites: DFT and molecular dynamics studies Open Access

Anniina Seppälä, Eini Puhakka, Markus Olin
Journal: Clay Minerals
Published: 01 May 2016
Clay Minerals (2016) 51 (2): 197–211.
DOI: https://doi.org/10.1180/claymin.2016.051.2.07
... Si_soft00.usp Optimizations of the unit cells of Na- and Ca-montmorillonites were done using GGA-PBE approximation only. The pseudopotentials are presented in Table 1 , and the kinetic cut-off energy for a plane-wave expansion of the wave function was 310 eV as in the case of K-montmorillonite...
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View PDF for article title, Effect of layer charge on the crystalline swelling of Na + , <span class="search-highlight">K</span> + and Ca 2+ <span class="search-highlight">montmorillonites</span>: DFT and molecular dynamics studies
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The swelling curves of Na-, Ca- and K-montmorillonites with different layer charges from MD and QM studies (note: water is forced into the interlayer) and experimental results: (a) Fu et al. (1990), (b) Cases et al. (1997), (c) Bérend et al. (1995) and MC calculations from Zheng et al. (2011).

The swelling curves of Na-, Ca- and K-montmorillonites with different layer... Open Access

Published: 01 May 2016
Fig. 4. The swelling curves of Na-, Ca- and K-montmorillonites with different layer charges from MD and QM studies (note: water is forced into the interlayer) and experimental results: (a) Fu et al . (1990) , (b) Cases et al . (1997) , (c) Bérend et al . (1995) and MC calculations from
Journal Article

Monte Carlo simulation of the total radial distribution function for interlayer water in sodium and potassium montmorillonites Available to Purchase

Garrison Sposito, Sung-Ho Park, Rebecca Sutton
Published: 01 April 1999
Clays and Clay Minerals (1999) 47 (2): 192–200.
... hydrates of Na- and K-montmorillonite. The simulated radial distribution functions then were used to compute the total radial distribution function for interlayer water, a physical quantity that can be determined experimentally by H/D isotopic-difference neutron diffraction. The simulated total radial...
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Journal Article

SORPTION OF 3-AMINO-1,2,4-TRIAZOLE AND Zn(II) ONTO MONTMORILLONITE Available to Purchase

Jaslin Ikhsan, John D. Wells, Bruce B. Johnson, Michael J. Angove
Published: 01 April 2005
Clays and Clay Minerals (2005) 53 (2): 137–146.
DOI: https://doi.org/10.1346/CCMN.2005.0530203
..., where L represents aminotriazole. Sorption experiments and modeling in systems containing K-saturated Wyoming (SWy-K) montmorillonite suggest that at low concentrations the aminotriazole sorbs primarily in cationic form via an ion-exchange mechanism. Sorption isotherms for aminotriazole are ‘s’-shaped...
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View PDF for article title, SORPTION OF 3-AMINO-1,2,4-TRIAZOLE AND Zn(II) ONTO <span class="search-highlight">MONTMORILLONITE</span>
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