Alkaline Hydrolysis of Waste Poly(Ethylene Terephthalate): A Modified Shrinking Core Model

2005 ◽  
Vol 42 (3) ◽  
pp. 237-251 ◽  
Author(s):  
Santosh Kumar ◽  
Chandan Guria
Keyword(s):  
Alkaline Hydrolysis ◽  
Ethylene Terephthalate ◽  
Core Model ◽  
Shrinking Core Model ◽  
Poly Ethylene Terephthalate ◽  
Shrinking Core ◽  
Poly Ethylene ◽  
Hydrolysis Of

Kinetics of Glycolysis of Poly (ethylene Terephthalate) by Shrinking-Core Model

2011 ◽  
Vol 233-235 ◽  
pp. 627-631 ◽  
Author(s):  
Fei Fei Chen ◽  
Guang Hui Wang ◽  
Wei Li ◽  
Feng Yang
Keyword(s):  
Ethylene Glycol ◽  
Ethylene Terephthalate ◽  
Weight Ratio ◽  
Core Model ◽  
Shrinking Core Model ◽  
Element Analysis ◽  
Poly Ethylene Terephthalate ◽  
Shrinking Core ◽  
Poly Ethylene ◽  
Kinetics Of

Poly (ethylene terephthalate) (PET) wastes were depolymerised using excess ethylene glycol (EG) in the presence of zinc acetate as transesterificaion catalyst. Influences of particle size, reaction temperature, weight ratio of ethylene glycol (EG) to PET and weight ratio of catalyst to PET on the yield of bis(hydroxyethyl terephthalate)(BHET) were investigated. The kinetics of glycolysis of PET in EG could be interpreted by the shrinking-core model of chemical reaction control, the activation energy of the glycolysis was 133 KJ/mol. The glycolysis product was analyzed and identified by FTIR and Element analysis.

Studies on the Depolymerization of Poly(ethylene terephthalate) Using 1, 1, 2, 2-Tetramethyl-1-Benzyl-2-n-Octyl Ethylene-1, 2-Diammonium Bromide Chloride as Phase Transfer Catalyst

2014 ◽  
Vol 938 ◽  
pp. 164-169
Author(s):  
V. Lakshmi Narayanan ◽  
M.J. Umapathy
Keyword(s):  
Alkaline Hydrolysis ◽  
Zinc Sulfate ◽  
Ethylene Terephthalate ◽  
Phase Transfer ◽  
Phase Transfer Catalyst ◽  
Dimethyl Benzyl ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Hydrolysis Of ◽  
New Phase

1,4-Bis (dimethyl) benzyl octyl ethylene diammonium bromide chloride has been synthesized, characterized and applied as new phase transfer catalyst in the alkaline hydrolysis of PET leading to depolymerisation. The new phase transfer catalyst has been compared with the alkaline hydrolysis of PET using zinc sulfate as catalyst in the depolymerization. It was found that the newly synthesized phase transfer catalyst exhibited excellent conversion than the alkaline hydrolysis of PET using zinc sulfate as catalyst.

A shrinking core model for the alkaline hydrolysis of PET assisted by tributylhexadecylphosphonium bromide

2009 ◽  
Vol 146 (2) ◽  
pp. 287-294 ◽  
Author(s):  
R. López-Fonseca ◽  
J.R. González-Velasco ◽  
J.I. Gutiérrez-Ortiz
Keyword(s):  
Alkaline Hydrolysis ◽  
Core Model ◽  
Shrinking Core Model ◽  
Shrinking Core ◽  
Hydrolysis Of
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