Parametric Pumping: Separation of Mixture of Toluene and n-Heptane

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Science  02 Feb 1968:
Vol. 159, Issue 3814, pp. 522-524
DOI: 10.1126/science.159.3814.522


Parametric pumping, a dynamic separation technique, comprises alternating axial displacement of a fluid mixture in a column of adsorptive particles upon which a synchronous cycling temperature is imposed. With direct coupling, separations of 105:1 between column ends have been obtained, with indications of great potential for further separation. A mathematical model and its solution describe the behavior of the system.