xylene separation. In total, a large, diverse library of 68 faujasites exchanged with
mixtures of alkali cations (Na
+
, K
+
, Cs
+
) and alkali earth cations (Ca
2+ , Ba
2+ ) was
prepared and tested in the presence of three distinct mixture conditions of relevance
to the separation process (Fig. 11a). From the measurements of the 68 Â 3
corresponding breakthrough curves, the separation performances between the xylene
isomers and the industrial desorbent were calculated. The set of performance
properties generated for each zeolitic adsorbent was analyzed by statistical methods
enabling sorting into different classes of selective adsorbents (Fig. 11b).
Fig. 11 (a) Schematic representation of the library construction, (b) score plot showing the
classification result
214
J. Pérez-Pellitero and G. D. Pirngruber
mixtures of alkali cations (Na
+
, K
+
, Cs
+
) and alkali earth cations (Ca
2+ , Ba
2+ ) was
prepared and tested in the presence of three distinct mixture conditions of relevance
to the separation process (Fig. 11a). From the measurements of the 68 Â 3
corresponding breakthrough curves, the separation performances between the xylene
isomers and the industrial desorbent were calculated. The set of performance
properties generated for each zeolitic adsorbent was analyzed by statistical methods
enabling sorting into different classes of selective adsorbents (Fig. 11b).
Fig. 11 (a) Schematic representation of the library construction, (b) score plot showing the
classification result
214
J. Pérez-Pellitero and G. D. Pirngruber