desorption (by displacement)
The process in which expulsion of a previously adsorbed component from the interfacial layer is effected by subsequent stronger adsorption of another component.
PAC, 1972, 31, 577. 'Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry' on page 585 (