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首页> 外文期刊>Journal of Applied Polymer Science >Hydrolysis of poly(ethylene terephthalate) waste bottles in the presence of dual functional phase transfer catalysts
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Hydrolysis of poly(ethylene terephthalate) waste bottles in the presence of dual functional phase transfer catalysts

机译：双功能相转移催化剂存在下的聚对苯二甲酸乙二醇酯废瓶的水解

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摘要

The hydrolysis of poly(ethylene terephthalate) (PET) obtained from waste bottles was studied. The dual functional phase transfer catalyst [(CH _3)_3N(C_(16)H_(33))]_3[PW _(12)O_(40)] exhibited outstanding catalytic activity to the hydrolysis of PET. Fourier transform infrared spectroscopy and proton nuclear magnetic resonance spectroscopy were used to confirm the main product terephthalic acid (TPA) of hydrolysis. The effects of temperature, time, particle size of PET and dosage of catalyst on hydrolysis reaction were examined. Under the optimum conditions of reaction temperature 145°C, time 2 h, particle size of PET at 0.5-1 mm and dosage of catalyst at 7 wt %, the conversion of PET and the yield of TPA were almost 100% and 93%, respectively. After easily separated from the product, the catalyst could be reused more than three times without obvious decrease in the conversion of PET and yield of TPA. An economical and convenient process was developed for hydrolysis of PET.
机译：研究了从废液瓶中获得的聚对苯二甲酸乙二醇酯（PET）的水解。双官能相转移催化剂[（CH _3）_3N（C_（16）H_（33））] _ 3 [PW _（12）O_（40）]对PET的水解表现出优异的催化活性。用傅立叶变换红外光谱和质子核磁共振光谱确定水解的主要产物对苯二甲酸（TPA）。考察了温度，时间，PET粒径和催化剂用量对水解反应的影响。在最佳反应温度145°C，时间2 h，PET粒度为0.5-1 mm，催化剂用量为7 wt％的最佳条件下，PET的转化率和TPA的收率分别接近100％和93％，分别。从产品中轻松分离后，该催化剂可重复使用三次以上，而PET的转化率和TPA的收率却没有明显降低。开发了一种经济且方便的方法来水解PET。

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