Chemical recycling of flexible PVC by oxygen oxidation in NaOH solutions at elevated temperatures

T. Yoshioka; K. Furukawa; T. Sato; A. Okuwaki

doi:10.1002/(sici)1097-4628(19981003)70:1<129::aid-app13>3.0.co;2-2

Chemical recycling of flexible PVC by oxygen oxidation in NaOH solutions at elevated temperatures

T. Yoshioka, K. Furukawa, T. Sato, A. Okuwaki

ENV - Frontier Science for Advanced Environment

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

Oxidative degradation of a flexible PVC pellet (F-PVC) with oxygen was carried out in 1-25-mol/kg(m)·H₂O NaOH solutions, at 130-260°C and P_O2 1-10 MPa. Dehydrochlorination of F-PVC occurred first, followed by oxidation. The major products were oxalic acid, a mixture of beozenecarboxylic acids, and CO₂. We obtained 320 g of oxalic acid and 130 g of benzenecarboxylic acids (as phthalic acid) from 1 kg of F-PVC under conditions of a 15-m NaOH solution at 250°C and a P_O2 of 5 MPa for 5 h.

Original language	English
Pages (from-to)	129-135
Number of pages	7
Journal	Journal of Applied Polymer Science
Volume	70
Issue number	1
DOIs	https://doi.org/10.1002/(sici)1097-4628(19981003)70:1<129::aid-app13>3.0.co;2-2
Publication status	Published - 1998 Oct 3

Keywords

Base-catalysed oxygen oxidation
Benzenecarboxylic acids
Chemical recycling
Dehydrochlorination
Flexible PVC
NaOH solutions
Oxalic acid

ASJC Scopus subject areas

Chemistry(all)
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/(sici)1097-4628(19981003)70:1<129::aid-app13>3.0.co;2-2

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title = "Chemical recycling of flexible PVC by oxygen oxidation in NaOH solutions at elevated temperatures",

abstract = "Oxidative degradation of a flexible PVC pellet (F-PVC) with oxygen was carried out in 1-25-mol/kg(m)·H2O NaOH solutions, at 130-260°C and PO2 1-10 MPa. Dehydrochlorination of F-PVC occurred first, followed by oxidation. The major products were oxalic acid, a mixture of beozenecarboxylic acids, and CO2. We obtained 320 g of oxalic acid and 130 g of benzenecarboxylic acids (as phthalic acid) from 1 kg of F-PVC under conditions of a 15-m NaOH solution at 250°C and a PO2 of 5 MPa for 5 h.",

keywords = "Base-catalysed oxygen oxidation, Benzenecarboxylic acids, Chemical recycling, Dehydrochlorination, Flexible PVC, NaOH solutions, Oxalic acid",

author = "T. Yoshioka and K. Furukawa and T. Sato and A. Okuwaki",

year = "1998",

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T1 - Chemical recycling of flexible PVC by oxygen oxidation in NaOH solutions at elevated temperatures

AU - Yoshioka, T.

AU - Furukawa, K.

AU - Sato, T.

AU - Okuwaki, A.

PY - 1998/10/3

Y1 - 1998/10/3

N2 - Oxidative degradation of a flexible PVC pellet (F-PVC) with oxygen was carried out in 1-25-mol/kg(m)·H2O NaOH solutions, at 130-260°C and PO2 1-10 MPa. Dehydrochlorination of F-PVC occurred first, followed by oxidation. The major products were oxalic acid, a mixture of beozenecarboxylic acids, and CO2. We obtained 320 g of oxalic acid and 130 g of benzenecarboxylic acids (as phthalic acid) from 1 kg of F-PVC under conditions of a 15-m NaOH solution at 250°C and a PO2 of 5 MPa for 5 h.

AB - Oxidative degradation of a flexible PVC pellet (F-PVC) with oxygen was carried out in 1-25-mol/kg(m)·H2O NaOH solutions, at 130-260°C and PO2 1-10 MPa. Dehydrochlorination of F-PVC occurred first, followed by oxidation. The major products were oxalic acid, a mixture of beozenecarboxylic acids, and CO2. We obtained 320 g of oxalic acid and 130 g of benzenecarboxylic acids (as phthalic acid) from 1 kg of F-PVC under conditions of a 15-m NaOH solution at 250°C and a PO2 of 5 MPa for 5 h.

KW - Base-catalysed oxygen oxidation

KW - Benzenecarboxylic acids

KW - Chemical recycling

KW - Dehydrochlorination

KW - Flexible PVC

KW - NaOH solutions

KW - Oxalic acid

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Chemical recycling of flexible PVC by oxygen oxidation in NaOH solutions at elevated temperatures

Abstract

Keywords

ASJC Scopus subject areas

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