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Modelling titration curves of mixed materials with variable and permanent surface charge: application

AuthorsMadrid, Luis ; Díaz Barrientos, Encarnación
Issue DateSep-1987
PublisherSociedad Española de Arcillas
CitationThe Sixth meeting of the European Clay Groups: 360-362 (1987)
AbstractTwo well-known materials, lepidocrocite (specilic sur-face area 115 m2g-1) and montmorillonite (internal surface are a 700 m2g-1), can be useful to test the mathematical model described in the preceding communication. With thispurpose, acid and base titration curves of both minerals and of mixtures containing 80% (w/w) of lepidocrocite (sample LM) and 80% montmorillonite (sample ML) were obtained at three ionic strengths (0.01, 0.1 and 1 M NaCl). The amounts of titrant consumed by the suspensions at each pH were corrected for the amount consumed by the corresponding solution at the same pH. The resulting graphs are shown in next page. Dashed lines will be explained later.
Description3 pages, 1 figure, 2 references. Congreso celebrado del 7-10, septiembre, 1987, Sevilla, España. EUROCLAY'87.
Appears in Collections:(IRNAS) Comunicaciones congresos
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