Abstract
Conventional cation exchange resin catalysts, used in the phenyl xylyl ethane (PXE) synthesis was found to deactivate after a few cycles. In the present study efforts were made to determine the concentration of residual double bonds of styrene-divinylbenzene based ion exchange resin catalyst. Bromine value of 6–7 was obtained for Indion-130 and Amberlyst-15. An alternate catalyst based on styrenated phenol and formaldehyde which does not use conventional vinylic chemistry for polymer formation was developed. PXE synthesis was explored using these new catalysts. An improvement in the catalyst performance in PXE synthesis was observed, compared to conventional catalysts. Reusability and temperature stability of the new catalysts have been verified by carrying out esterification of phthalic anhydride with 2-ethyl hexanol.
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