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Abstract
Transesterification of dimethyl 2,6-napthalene dicarboxylate with ethylene glycol over metal salts catalyst was empolyed as probe reation. The effects of reaction temperature, reaction time, the molar ratio of ethylene glycol to dimethyl 2,6-napthalene dicarboxylate, N2 flowrate, kind of metal salt on the conversion of dimethyl 2,6-napthalene dicarboxylate have been investigated. The results showed that the sequence of influence was as follows: reaction temperature > reaction time > ethylene glycol/dimethyl 2,6-napthalene dicarboxylate molar ratio > amount of the catalyst. The optimum reaction conditions were 210 oC of reaction temperature, 240 min of reaction time, 2.8 molar ratio of ethylene glycol to dimethyl 2,6-napthalene dicarboxylate, 60 ml/min of N2, amount of zinc acetate being 0.08 % / mole of dimethyl 2,6-napthalene dicarboxylate.
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