Determination of the surface properties of illites and kaolinites by inverse gas chromatography

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Journal of Colloid and Interface Science

DOI:https://doi.org/10.1006/jcis.1995.1448· OSTI ID:118830

Saada, A; Papirer, E; Balard, H; Siffert, B ^[1]

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1. Centre de Recherches sur la Physico-Chimie des Surfaces Solides, Mulhouse (France)

Important problems, such as limited yield of oil recovery during petroleum exploitation, involve the interaction of pore filling fluids with the minerals which constitute the reservoir walls. The clay minerals, due to their specific surface area and electrical charge density, are the most active of those minerals. The surface properties of illites and kaolinites of various origins and formation conditions were measured by inverse gas chromatography (IGC) at infinite dilution conditions. The value of the dispersive component of the surface energy ({gamma}) determined by IGC is significantly higher for these clays than the {gamma} of amorphous silicas. This is explained by the partial insertion of a very small amount of injected alkane probes into structural defects located on the border layers of the clays. The use of branched bulky alkane probes allows the evaluation of the clay`s nanorugosity through the determination of a morphological index (I{sub M}). The relation between {gamma} and surface nanorugosity (I{sub M}) confirms that the high values of {gamma} of the clays are representative only of these particulate sites of adsorption.

• OSTI ID: 118830
• Journal Information: Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 1 Vol. 175; ISSN 0021-9797; ISSN JCISA5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
40 CHEMISTRY
ENHANCED RECOVERY
ILLITE
KAOLINITE
MORPHOLOGY
PETROLEUM
SILICON OXIDES
SURFACE POTENTIAL
SURFACE PROPERTIES
WETTABILITY