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- Title
Effective catalysis of poly(ethylene terephthalate) (PET) degradation by metallic acetate ionic liquids.
- Authors
Xueyuan Zhou; Xingmei Lu; Qian Wang; Minli Zhu; Zengxi Li
- Abstract
Poly(ethylene terephthalate) (PET) is widely used for beverage bottles, electrical and electronic instruments, household wares, and so on. As a consequence of dramatically increasing consumption, recycling of post-consumer PET products has become an important environmental opportunity for sustainable usage in society. In this paper, we investigated the use of chlorine-free metallic acetate ionic liquids (ILs) as catalysts for the degradation of PET because of their lower toxicity, corrosivity, and cost. 1,3-Diethylimidazolium triaceticzincate ([deim][Zn(OAc)3]) behaved as the best in this group. The synthesized ILs and the major product, characterized by a variety of techniques and factors affecting glycolysis, were examined. Under optimum conditions, conversion of PET reached 98.05 %, and the selectivity of the bis(hydroxyethyl) terephthalate (BHET) monomer was 70.94 %. A probable mechanism for the glycolysis of PET catalyzed by [deim][Zn(OAc)3] was given. In our opinion, catalysis accounted for the synergic effect of the cation and anion of the IL.
- Subjects
POLYETHYLENE terephthalate; CATALYSIS; IONIC liquids; ACETATES; METAL catalysts; SUSTAINABILITY; GLYCOLYSIS; SUSTAINABLE chemistry
- Publication
Pure & Applied Chemistry, 2012, Vol 84, Issue 3, p789
- ISSN
0033-4545
- Publication type
Article
- DOI
10.1351/PAC-CON-11-06-10