| abstract |
The present invention relates to zeolite-based adsorbents based on aggregation crystals of FAU zeolite containing barium and / or potassium with a large external surface area, in combination with optimum properties in terms of selectivity and mechanical strength. Such sorbents are applied in the separation of the isomers of substituted toluene, e.g., nitro toluene, diethyl toluene, toluene diamine, in the separation of cresol, and in the separation of polyhydric alcohols, such as sugars, in the fractionation of C8-aromatic isomers and in particular in the separation of xylenes . |