Add time:09/05/2019 Source:sciencedirect.com
The catalytic behavior of the superbases Na/NaOH/γ-Al2O3 and CsxO/γ-Al2O3 was investigated in the transesterification of methyl benzoate and DIMETHYL TEREPHTHALATE (cas 120-61-6) with ethylene glycol. The reactions were carried out in liquid phase under atmospheric pressure. The dependencies of conversion, selectivity and product distribution on temperature, reactant/catalyst ratio and the starting material ratio were investigated. In the transesterification of methyl benzoate selectivites to ethylene glycol monobenzoate up to 96% at conversions up to 94% have been observed. In the transesterification of dimethyl terephthalate yield of bis(2-hydroxyethyl) terephthalate of 88% is obtained.
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