The production of diphenyl carbonate (DPC) by the transesterification of dimethyl carbonate (DMC) with phenol was
performed using a variety of solid catalysts. Mg−Al-hydrotalcite
was found to have a high activity for this transesterification. A
14.7% yield of DPC and an 11.6% yield of methylphenyl
carbonate (MPC) based on DMC were obtained in the presence
of Mg−Al-hydrotalcite catalyst. The optimum experimental
temperature for this transesterification reaction was between
160 and 180 °C, which was in agreement with the thermodynamic analysis. When the transesterification of DMC with
phenol was performed at the molar ratio of phenol to DMC of
2:1, reaction time 10 h, 1.0% of 2:1 Mg−Al-hydrotalcite based
on the total weight of reactants, and 160−180 °C, the total yield
and selectivity for DPC and MPC were 26.3 and 82.4%,
respectively. The yield of anisole was 5.6%.
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