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The kinetics of the tetrabutyl titanate‐catalyzed homogeneous succinic acid/1,4‐butylenediol (BDO) and heterogeneous terephthalic acid/BDO esterifications were investigated experimentally and theoretically. A unified kinetic model considering two main esterifications as well as one reversible polycondensation and two THF‐forming side reactions has been developed for the two esterification systems. The model agrees well with the experimental results. The effects of reaction temperature, diol/diacid ratio, catalyst amount, and heterogeneity on the esterification kinetics are simulated and discussed. magnified image
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Li-xia et al. (2010) studied this question.
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