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Hydrolytic depolymerization of PET in a microwave reactor
journal contribution
posted on 2015-04-09, 09:19 authored by Mohammad N. Siddiqui, Dimitris S. Achilias, Halim H Redhwi, Dimitris N. Bikiaris, Konstantinos Katsogiannis, George P. KarayannidisRecycling of PET was examined using hydrolytic depolymerization in an alkaline solution under microwave irradiation. The reaction was carried out in a sealed microwave reactor in which the pressure and temperature were controlled and recorded. The main products were the monomers TPA and EG. The effect of reaction temperature, time, amount of PET and alkaline concentration on the degree of PET depolymerization and TPA recovery was investigated. Microwave irradiation was found to reduce the time needed to achieve a specific degradation of PET significantly, with almost complete depolymerization occurring in 30 min at 180 °C and only 46 W of microwave power. Using a phase transfer catalyst (TOMAB) resulted in the same amount of unreacted PET but at significantly lower depolymerization temperatures.
Funding
King Abdulaziz City for Science and Technology (KACST) Riyadh, Saudi Arabia. Grant Number: AR-27-101
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Macromolecular Materials and EngineeringCitation
SIDDIQUI, M.H. ... et al., 2010. Hydrolytic Depolymerization of PET in a Microwave Reactor. Macromolecular Materials and Engineering, 295 (6), pp. 575–584.Publisher
© WILEY-VCH VerlagVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2010Notes
Closed accessISSN
1438-7492Publisher version
Language
- en