Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation
For ecological reasons, there is an increasing demand for recycling polyethylene terephthalate (PET) wastes in developed countries. Although one potential application might be its utilisation for the production of activated carbons, the behaviour of these wastes when subjected to different heat trea...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2006-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/026361706779849735 |
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| author | José B. Parra Conchi O. Ania Ana Arenillas Fernando Rubiera José J. Pis José M. Palacios |
| author_facet | José B. Parra Conchi O. Ania Ana Arenillas Fernando Rubiera José J. Pis José M. Palacios |
| author_sort | José B. Parra |
| collection | DOAJ |
| description | For ecological reasons, there is an increasing demand for recycling polyethylene terephthalate (PET) wastes in developed countries. Although one potential application might be its utilisation for the production of activated carbons, the behaviour of these wastes when subjected to different heat treatments and activation processes is still not very well known. In the present work, samples with different degrees of burn-off were prepared by pyrolysis in an inert atmosphere and subsequent CO 2 activation at high temperatures. The derived changes in the textural and structural properties of the residual solids were studied by helium picnometry, N 2 and CO 2 adsorption isotherms, powder XRD, Raman spectroscopy and XPS. The study reveals that CO 2 activation of PET wastes develops a carbonaceous matrix with micropores. Helium measurements showed that the mass density of the activated samples increased as the degree of burn-off increased. Characterisation studies revealed that the structural changes derived from pyrolysis and further CO 2 activation mostly involved a progressive decrease in the number of structural units. |
| format | Article |
| id | doaj-art-e878b41797cc4187bce34e2849fbedd4 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2006-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-e878b41797cc4187bce34e2849fbedd42025-01-02T22:37:25ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382006-06-012410.1260/026361706779849735Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO ActivationJosé B. Parra0Conchi O. Ania1Ana Arenillas2Fernando Rubiera3José J. Pis4José M. Palacios5 Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain Instituto Nacional del Carbón, CSIC, Apartado 73, 33080 Oviedo, Spain Instituto de Catálisis y Petroleoquímica, CSIC, Campus UAM-Cantoblanco, 28049 Madrid, SpainFor ecological reasons, there is an increasing demand for recycling polyethylene terephthalate (PET) wastes in developed countries. Although one potential application might be its utilisation for the production of activated carbons, the behaviour of these wastes when subjected to different heat treatments and activation processes is still not very well known. In the present work, samples with different degrees of burn-off were prepared by pyrolysis in an inert atmosphere and subsequent CO 2 activation at high temperatures. The derived changes in the textural and structural properties of the residual solids were studied by helium picnometry, N 2 and CO 2 adsorption isotherms, powder XRD, Raman spectroscopy and XPS. The study reveals that CO 2 activation of PET wastes develops a carbonaceous matrix with micropores. Helium measurements showed that the mass density of the activated samples increased as the degree of burn-off increased. Characterisation studies revealed that the structural changes derived from pyrolysis and further CO 2 activation mostly involved a progressive decrease in the number of structural units.https://doi.org/10.1260/026361706779849735 |
| spellingShingle | José B. Parra Conchi O. Ania Ana Arenillas Fernando Rubiera José J. Pis José M. Palacios Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation Adsorption Science & Technology |
| title | Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation |
| title_full | Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation |
| title_fullStr | Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation |
| title_full_unstemmed | Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation |
| title_short | Structural Changes in Polyethylene Terephthalate (PET) Waste Materials Caused by Pyrolysis and CO Activation |
| title_sort | structural changes in polyethylene terephthalate pet waste materials caused by pyrolysis and co activation |
| url | https://doi.org/10.1260/026361706779849735 |
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