Collect. Czech. Chem. Commun. 1998, 63, 1907-1914

Possibilities of Decreasing Absorption of Water in Ion-Exchanger Catalysts

Karel Jeřábek and Zdeněk Prokop

Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02 Praha 6-Suchdol, Czech Republic


Possibilities of decreasing the ability of strong-acid ion-exchanger catalysts to retain water were investigated in a case study of bisphenol A synthesis for to diminish effects of water as reaction product on the kinetics of the catalyzed reaction. It was found that partial thermal desulfonation or neutralization of about 30-40% acid groups with 2-aminoethanethiol can produce catalysts which exhibit, in the presence of technologically significant concentration of water, a higher activity in bisphenol A synthesis than conventional ion-exchanger catalysts.

Keywords: Polymer supported catalysts; Sulfonates; Desulfonation; Ion exchangers; Water adsorption; Bisphenol A.