KINETIC STUDIES ON THE PERFORMANCE OF IMMOBILIZED QUATERNARY AMMONIUM SALT CATALYSTS FOR THE ADDITION OF CARBON DIOXIDE TO PHENYL GLYCIDYL ETHER


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Abstract

The addition of carbon dioxide to phenyl glycidyl ether (PGE) was investigated in a semi-batch reactor, using immobilized quaternary ammonium chloride catalysts. Five different catalysts were prepared with the following supports: (1) soluble poly(ST-co-VBC) [C1], (2) insoluble poly(ST-DVB-VBC) [C2], (3) macroporous poly(ST-DVB-VBC) [C3], (4) poly(ST-co-VBC)-MMT [C4] (5) modified MCM- 41 [C5]. The addition of carbon dioxide to PGE can be considered as a pseudofirst order process with respect to the concentration of PGE. The pseudo-first order rate constant for the catalysts decreased in the series C1>C3>C2>C4>C5. The activation energy for C1 to C5 catalysts was 8.6, 20.9, 19.9, 23.9, and 26.8 kJ/mol, respectively. The immobilized catalysts can be reused in least 4 successive runs without any considerable loss of their initial reactivities.

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