DISCRETENESS OF CHARGE ON CLAY SURFACE

CONFIRMATION OF THE AGREEMENT BETWEEN SURFACE AREAS MEASURED BY THE NITROGEN ABSORPTION AND CHLORIDE REPULSION METHODS HAS BEEN OBTAINED TO A LIMITED EXTENT BY SEVERAL WORKERS. MORE EXTENSIVE AND DETAILED MEASUREMENT OF CHLORIDE REPULSION FROM NEGATIVELY CHARGED SURFACES HAS BEEN UNDERTAKEN. A SERIES OF HOME-IONIC ILLITES WERE STUDIED BECAUSE THE AREA AVAILABLE FOR NITROGEN AND WATER WAS ESSENTIALLY SIMILAR FOR THESE CLAYS WHICH ARE NON-EXPANDING MICA-LIKE MINERALS. A PLOT OF VOLUME OF WATER FROM WHICH CLAY WAS EXCLUDED AGAINST A FUNCTION OF THE BULK CONCENTRATION OF VARIOUS CATIONS SHOWS A FAMILY OF STRAIGHT LINES. THE INTERPRETATION OF THIS IS DISCUSSED AND IT IS CONSIDERED THAT THERE IS CLEAR EVIDENCE FOR DISCRETENESS OF ELECTRIC CHARGE ON CLAY SURFACES. /RRL/

  • Supplemental Notes:
    • Vol206, No 4980, PP 168-170, 1FIG, 17REF
  • Authors:
    • Edwards, D G
    • Posner, A M
    • Quirk, J P
  • Publication Date: 1965-4

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Filing Info

  • Accession Number: 00237244
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Jan 5 1994 12:00AM