Abstract
A brief historical account on the theory proposed in 1922 by Wolfgang Ostwald and Ramón de Izaguirre for adsorption from solution is initiated with an examination of the circumstances under which that work was generated. After providing some biographic data of the authors prior to their formulation of the theory, a concise overview of the theory is presented. This is followed by an identification of further publications from both authors in the field of adsorption.