PET synthesis in the presence of new aluminum catalysts |
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| Authors: | Bin Xiao Liping Wang Renhao Mei Gongying Wang |
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| Affiliation: | (1) Chengdu Institute of Organic Chemistry, The Chinese Academy of Sciences, Chengdu, 610041, Sichuan, China;(2) Changzhou Key Laboratory of Green Chemistry and Technology, Changzhou Institute of Chemistry, Changzhou, 213164, Jiangsu, China |
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| Abstract: | A new polycondensation catalyst (ethylene glycol aluminum) was synthesized and applied in PET synthesis. It has been characterized
by spectral studies (IR, NMR). The catalytic activity of organic aluminum compound was discussed in this paper. In this investigation,
the synthesis of poly(ethylene terephthalate) (PET) is presented using ethylene glycol (EG) and terephthalic acid (TPA). The
result proved that ethylene glycol aluminum was the real catalytic material. And it was proved to be the most efficient catalyst
for the polycondesation reaction among the organic aluminum compounds. Similar catalytic activity has been observed for ethylene
glycol aluminum compared to ethylene glycol antimony. The esterification reaction was monitored by measuring the distilled
water as a function of time and the modeling of this process was carried out from these data. The received PET samples were
characterized by viscometry, carboxyl end-group content and diethylene glycol (DEG) content. A mechanism of aluminum catalysis
has been proposed to explain these observations. |
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