MICROWAVE ASSISTED RECOVERY OF TEREPHTHALIC ACID FROM POLY (ETHYLENE TEREPHTHALATE) WASTES IN THE PRESENCE OF RECOVERABLE NANO-FE3O4@SIO2

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ALAVI NIKJE M.M.; GHAMARY E.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Journal of Applied Research in Chemistry Year:2014 | Volume:8 | Issue:3 Page(s): 5-13

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Information Journal Paper

Title

MICROWAVE ASSISTED RECOVERY OF TEREPHTHALIC ACID FROM POLY (ETHYLENE TEREPHTHALATE) WASTES IN THE PRESENCE OF RECOVERABLE NANO-FE3O4@SIO2

Author(s)

ALAVI NIKJE M.M. | GHAMARY E. | Issue Writer Certificate

Keywords

POLY (ETHYLENE TEREPHTHALATE)Q2

RECYCLINGQ3

TEREPHTHALIC ACIDQ2

MICROWAVE IRRADIATION NANO- FE3O4@SIO2Q2

Abstract

Quantitative recovery of TEREPHTHALIC ACID (TPA) from poly (ethylene terephthalate) (PET) wastes is reported under controllable microwave irradiation in the presence of diethylene glycol (DEG) as the solvent in combination with NaOH and nano-Fe3O4@SiO2 as the catalyst and solid support, respectively. The reaction was performed in mono-mode microwave reactor and the weight ratios of DEG: PET, NaOH: PET and nano-Fe3O4@SiO2:NaOH were investigated in detail. Obtained results revealed that in the presence of NaOH (0.4 g), nano-Fe3O4@SiO2 (1 g) and PET: DEG molar ratios (1:6), TPA was obtained in high recovery yield (96%). At the end of the reaction, nano-Fe3O4@SiO2 was recovered by simple magnetic decantation and reused for several times without observing significant decrements in TPA recovery yields.

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