Alkylammonium chlorides whose adsorption/micelle energetic ratio (AMER) is close to unity are those adsorbed most effectively on the surface of a solid carrier (adsorbent). A change in the solution pH leads to a change in the hydrocarbon chain length of the alkylammonium chlorides with AMER values close to unity and hence to a positive change on the length of the hydrocarbon chain adsorbed on the carrier surface.
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