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Effective catalysis of poly(ethylene terephthalate) (PET) degradation by metallic acetate ionic liquids.
- Source :
-
Pure & Applied Chemistry . Mar2012, Vol. 84 Issue 3, p789-801. 13p. 1 Diagram, 3 Charts, 10 Graphs. - Publication Year :
- 2012
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00334545
- Volume :
- 84
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Pure & Applied Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 73351169
- Full Text :
- https://doi.org/10.1351/PAC-CON-11-06-10