Linear elution adsorption chromatography : XII. Functional grou adsorption energies on the metal oxide adsorbents

摘要: Abstract Functional group adsorption energies Q°i for of a sample on alumina, silica, Florisil, and (presumably) other metal oxide adsorbents can now be correlated in terms single theoretical model. Given value the polar i any these three it is possible to predict reliable values same two adsorbents. Furthermore, given substituted either by an aromatic or aliphatic substituent, calculate opposite case. This turn permits calculation numerous solute eluent strength that were previously unavailable. A number are available standard state interpretation fundamental molecular processes which give rise selective adsorption. The present correlation throw additional light general mechanisms compounds Alumina preferentially adsorbs acids with pKA less than 13, relative silica while appears adsorb bases pKB 5.