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siloxanes

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Journal Article
Published: 01 December 2013
Clays and Clay Minerals (2013) 61 (6): 532–540.
...Remy M. K. Vala; L. Tichagwa Abstract The present study investigated the use of local and affordable clinoptilolite for the removal of persistent dyes from water. To improve its adsorption capacity, Na-clinoptilolite was modified chemically with two N-terminated siloxanes (molar mass: 2600...
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Journal Article
Published: 01 December 1981
American Mineralogist (1981) 66 (11-12): 1237–1249.
... distributions for tetrahedral rings in silicates and siloxanes. Experimental correlations between SiO bond length and bridging SiOSi angle for rings in silicates and siloxanes are reproduced by the theory. The stable configurations of 4-membered tetrahedral rings are predicted to have the exact reverse sequence...
Journal Article
Published: 01 August 2009
American Mineralogist (2009) 94 (8-9): 1085–1102.
...G.V. Gibbs; A.F. Wallace; D.F. Cox; R.T. Downs; N.L. Ross; K.M. Rosso Abstract Experimental model electron density distributions obtained for the silica polymorphs coesite and stishovite are comparable with electron density distributions calculated for various silicates and siloxane molecules...
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Journal Article
Journal: Geology
Published: 04 August 2017
Geology (2017) 45 (10): 899–902.
..., unless inner-sphere fixing in the ditrigonal cavity occurs ( Evans et al., 1983 ; Sato et al., 2016 ). If adsorbed on illite frayed edges or in a vermiculite interlayer, Cs is fixed irreversibly by bonding directly to two adjacent siloxane surfaces of tetrahedral sheets near the site of Al 3+ for Si 4...
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Journal Article
Published: 01 August 1991
Clays and Clay Minerals (1991) 39 (4): 428–436.
Image
XRD patterns (low-angle range) of clinoptilolite modified with <span class="search-highlight">siloxanes</span>.
Published: 01 December 2013
Figure 6 XRD patterns (low-angle range) of clinoptilolite modified with siloxanes.
Image
XRD patterns (wide-angle range) of clinoptilolite modified with <span class="search-highlight">siloxanes</span>.
Published: 01 December 2013
Figure 7 XRD patterns (wide-angle range) of clinoptilolite modified with siloxanes.
Image
SEM images of clinoptilolite modified with (a) <span class="search-highlight">siloxane</span> NH40D and (b) silox...
Published: 01 December 2013
Figure 9 SEM images of clinoptilolite modified with (a) siloxane NH40D and (b) siloxane NH130D.
Image
The adsorption sites of 1 C 60 . The black spots (larger) represent the cen...
Published: 01 December 2017
Figure 4. The adsorption sites of 1 C 60 . The black spots (larger) represent the centroid position of reference atoms (Al for hydroxyl surface and Si for siloxane surface). The red spots (smaller) represent the centroid position of C 60 . K-OH: hydroxyl surface of kaolinite; K-SiO: siloxane
Image
Different views of the crystal structures investigated: (a) layers of kaoli...
Published: 01 December 2017
Figure 1. Different views of the crystal structures investigated: (a) layers of kaolinite; (b) hydroxyl surface of kaolinite; (c) siloxane surface of kaolinite; (d) layers of pyrophyllite; and (e) siloxane surface of pyrophyllite. The layers are parallel to the ab plane and surfaces along
Image
FTIR spectra of <span class="search-highlight">siloxane</span> modified clay from 3250 to 2750 cm –1  (a) before ...
Published: 01 December 2010
F ig . 4. FTIR spectra of siloxane modified clay from 3250 to 2750 cm –1 (a) before and (b) after solvent extraction; (c) FTIR spectra of siloxane modified clays after solvent extraction from 1500 to 400 cm –1 .
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<span class="search-highlight">Siloxane</span> bond angle distribution before and after deposition of a multilaye...
Published: 01 January 2001
Figure 22. Siloxane bond angle distribution before and after deposition of a multilayer amount of Pt atoms onto silica surfaces, averaged over the top 5 Å of five (5) surfaces. Shift to smaller siloxane bond angles caused by overlayer formation.
Journal Article
Journal: Clay Minerals
Published: 01 December 2010
Clay Minerals (2010) 45 (4): 489–502.
...F ig . 4. FTIR spectra of siloxane modified clay from 3250 to 2750 cm –1 (a) before and (b) after solvent extraction; (c) FTIR spectra of siloxane modified clays after solvent extraction from 1500 to 400 cm –1 . ...
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(a) Kelvin probe force microscopy image of the surface potential of a speci...
Published: 01 May 2007
Fig. 7. (a) Kelvin probe force microscopy image of the surface potential of a specimen of clinochlore showing various parallel siloxane and brucite-like layers; (b) Potential profile along the line reported in Fig. 7a, which shows voltage steps of −300 mV for siloxane and about +200 mV
Image
(a) Kelvin probe force microscopy image of the surface potential of a speci...
Published: 01 May 2007
Fig. 7. (a) Kelvin probe force microscopy image of the surface potential of a specimen of clinochlore showing various parallel siloxane and brucite-like layers; (b) Potential profile along the line reported in Fig. 7a, which shows voltage steps of −300 mV for siloxane and about +200 mV
Journal Article
Published: 01 December 2017
Clays and Clay Minerals (2017) 65 (6): 398–409.
...Figure 4. The adsorption sites of 1 C 60 . The black spots (larger) represent the centroid position of reference atoms (Al for hydroxyl surface and Si for siloxane surface). The red spots (smaller) represent the centroid position of C 60 . K-OH: hydroxyl surface of kaolinite; K-SiO: siloxane...
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Journal Article
Published: 01 February 2004
Clays and Clay Minerals (2004) 52 (1): 25–30.
... were studied using X-ray diffraction. The hydrophobic Wacker BS 290 (around 100% silane/siloxane) does not prevent water from sorbing on the interlayer surface of smectite because the hydrophobic silane/siloxane is not intercalated into the interlayer space, but adsorbed onto the external surface...
FIGURES
Journal Article
Published: 01 August 2003
Clays and Clay Minerals (2003) 51 (4): 415–420.
.... Both the siloxane surfaces and TAA ions contributed to the overall sorption, with their relative contributions dependent on the TAA interionic distances and the basal spacings of TAA-SACs. High benzene sorption by small TAA-SAC (tetramethylammonium (TMA)-SAC) was attributed to the strong interactions...
FIGURES
Journal Article
Journal: Clay Minerals
Published: 01 December 1997
Clay Minerals (1997) 32 (4): 645–651.
...S. Nishihama; H. Yamada; H. Nakazawa Abstract Montmorillonites ion-exchanged with Li (super +) , Na (super +) , K (super +) , Ca (super 2+) , Mg (super 2+) and Ni (super 2+) and acidic clay were used as catalysts for the polymerization of a cyclic siloxane monomer, 2,4,6,8...
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Periodic simulation cells of a kaolinite nanopore with a CsCl solution expo...
Published: 01 June 2014
F igure 2 Periodic simulation cells of a kaolinite nanopore with a CsCl solution exposed to the gibbsite-like and siloxane basal surfaces of kaolinite. The equilibrated configuration from molecular dynamics shows Cs + (orange spheres) mostly adsorbed to the siloxane surface and Cl − (green