Modeling description and spectroscopic evidence of surface acid-base properties of natural illites.
The acid-base properties of natural illites from different areas were studied by potentiometric titrations. The acidimetric supernatant was regarded as the system blank to calculate the surface site concentration due to consideration of substrate dissolution during the prolonged acidic titration. The following surface complexation model could give a good interpretation of the surface acid-base reactions of the aqueous illites:
Liu
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SKLEAC, Research Center for Eco-Environmental Sciences, Academy Sinica, Beijing, China. wenxin@mail.rcees.ac.cn
D000143:Acids / Q000737:chemistry; D000538:Aluminum Silicates; D000077215:Clay; D004785:Environmental Pollutants; D006863:Hydrogen-Ion Concentration; D008956:Models, Chemical; D013057:Spectrum Analysis; D017186:Titrimetry
D000143:Acids; D000538:Aluminum Silicates; D004785:Environmental Pollutants; D000077215:Clay