文档编号:CL034 文档字数:9780,页数:25 摘 要:本文档阐述了PET的对世界产生的重要意义及其带来的负面影响。从化学、生物等多角度列举了废旧PET的降解方法。重点介绍了碱性水解法降解PET。即PET在NaOH的催化下水解成对苯二甲酸和已二醇,这一混合物加热到340℃通过蒸馏的方法蒸发回收已二醇。定量分析碱液浓度、温度、时间等条件对PET降解的影响,得到最优的条件。 关键词:PET;白色污染; PET瓶; 化学降解; 化学改进; 生物降解; 碱性水解;实验原理;结果与讨论 Abstract: PET described in this paper on the importance of world and its negative impact. From chemical, biological, such as multi-angle list of methods used PET degradation. Focuses on the alkaline hydrolysis degradation of PET. PET in NaOH or-catalyzed hydrolysis of terephthalic acid and diol in pairs,, The mixture heated to 340 ℃ evaporation by distillation method of recovery has been diol. Quantitative analysis of alkali concentration, temperature and time conditions on the degradation of PET, the optimal conditions. Keywords:PET; white pollution; PET bottles; chemical degradation; improve; biodegradation; biodegradation ; biodegradation ; Results and Discussion 目 录
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Tags:PET 降解 研究 | 2011-04-03 09:16:14【返回顶部】 |