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Effects of Iron Oxidation State and Organic Cations on Dioctahedral Smectite Hydration
Alkylammonium Ferric Iron Ferrous Iron HDTMA Hydrophilic Surface Hydrophobic Surface Interlayer Cation Oxidation Reduction Surface Hydration Swelling TMA TMPA
2011/12/6
Abstract: Reduction of structural Fe in Na-exchanged dioctahedral smectites decreases swellability in water, but because clay interlayers also collapse in the process the concomitant effect on surface...
Effects of Iron Oxidation State on the Texture and Structural Order of Na-Nontronite Gels
Electron diffraction Ferric iron Ferrous iron High-resolution transmission electron microscopy Layer structure Nontronite
2011/12/31
Aqueous gels of unaltered (oxidized) and chemically reduced ferruginous smectite (SWa-1 from the Source Clays Repository of The Clay Minerals Society) were characterized by transmission electron micro...
Effects of Iron Oxidation State on the Specific Surface Area of Nontronite
Ethylene glycol-monoethyl ether Iron Nontronite Oxidation Specific surface area
2012/1/9
The effect of Fe oxidation state on the specific surface area, Sm, of nontronite was studied using the <2-祄, Na+-saturated fraction of the SWa-1 and Garfield nontronite reference clays. The reduction ...
Iron Oxidation and Reduction Effects on Structural Hydroxyl and Layer Charge in Aqueous Suspensions of Micaceous Vermiculites
Iron Oxidation Structural Hydroxyl Layer Aqueous Suspensions Micaceous
2012/2/15
Four Na2S2O4-reduced Na-vermiculites, each with some trioctahedral mica interstratified, were oxidized with H2O2 at pH 6·5 and again reduced with Na2S2O4 in suspensions at pH 7·5–8·0. The layer charge...