PET as precursor of microporous carbons: preparation and characterization

Fernández-Morales, I.; Almazán-Almazán, M.C.; Pérez-Mendoza, Manuel; Domingo-Garcı́a, M.; López-Garzón, F.J.

doi:10.1016/j.micromeso.2004.12.006

Cited by 45 publications

(23 citation statements)

References 24 publications

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“…Nowadays, plastic waste, namely poly(ethylene terephthalate) (PET), which is most commonly associated with plastic drink bottles, is one of the major problems of our society. Many research works have been performed in the last years in order to develop innovative technologies for the conversion of these excessive amounts of waste into new useful, value‐added products 1–9. Among the various recovery methods, the conversion of waste PET into carbonaceous porous adsorbents may be a notable way.…”

Section: Introductionmentioning

confidence: 99%

“…Among the various recovery methods, the conversion of waste PET into carbonaceous porous adsorbents may be a notable way. The high carbon content and low amounts of mineral matters and impurities in PET have made this residue a promising precursor for activated carbons (AC) 1, 3, 4, 8. Conversion of the available, low‐cost, and reproducible PET wastes into AC would eliminate the related environmental concerns; it would also reduce the total production costs of AC and promote their application to various industrial uses.…”

Section: Introductionmentioning

confidence: 99%

“…A review of the literature has shown that the focus of most studies is on the physical activation of PET with steam or CO 2 to produce AC 1, 3, 4, 10–15; however, in several works, PET activation with chemical agents such as NaOH 16, 17, KOH 17, 18, H 2 SO 4 19, 20, and HNO 3 21 was investigated. The use of chemical materials as activating agents, simultaneous carbonization and activation, heat treatment at lower temperatures compared to those of the physical method, and removal of extra chemicals from the sorbent pores during the washing steps are the most important characteristics of chemical activation 22–25.…”

Section: Introductionmentioning

confidence: 99%

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Conversion of Poly(Ethylene Terephthalate) Waste into Activated Carbon: Chemical Activation and Characterization

et al. 2014

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Due to its high carbon content, low impurities, low cost and easy availability, poly(ethylene terephthalate) (PET) waste is considered as a suitable precursor for the production of activated carbon. The chemical activation of PET wastes using different chemical agents such as H3PO4, H2SO4, ZnCl2, and KOH was investigated. KOH‐ and ZnCl2‐activated PET were found to be the best choices for the adsorption of small and large molecules. The capacities of the adsorbents towards I2, methylene blue, N2, CH4, and CO2 followed the order KOH‐PET >H3PO4‐PET > ZnCl2‐PET > H2SO4‐PET; however, in the molasses uptake and selective adsorption of CO2 compared to CH4, ZnCl2‐PET performed better than the other adsorbents.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Conversion of Poly(Ethylene Terephthalate) Waste into Activated Carbon: Chemical Activation and Characterization

et al. 2014

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“…Therefore, much effort has been put to investigate methods to utilize it. One of the ways widely studied is converting PET to useful products such as activated carbon [1][2][3]. Preparation of porous carbon materials from PET usually employs carbonization and successive activation, carried out at 800-900°C.…”

Section: Introductionmentioning

confidence: 99%

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Przepiórski

Karolczyk

Tsumura

et al. 2011

J Therm Anal Calorim

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Mixtures of poly(ethylene terephthalate) (PET) with magnesium compounds including carbonate, hydroxide, and oxide, with different weight ratios of the components, were subjected to thermogravimetric measurements up to 850°C in argon atmosphere. For reference, pure components of the examined mixtures were analyzed at the same conditions. During the heating, PET underwent carbonization and magnesium carbonate and hydroxide decomposed to MgO with evolution of gaseous products (CO 2 and/or H 2 O). As found, carbon yields calculated from the residual masses depended on the qualitative and quantitative composition of the starting mixture. Yields of carbon obtained from PET mixed with MgO did not depend on MgO/PET ratio. However, yields of carbon formed through pyrolysis of PET contained in the mixture with either magnesium carbonate or magnesium hydroxide were in general higher and depended on the weight ratio of components in the starting material. Reasons of these inconsistent results are discussed and explained. An influence of gasification of char on the carbon yield is explained.

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“…Previous studies have suggested the production of activated carbons with suitable features to be used as adsorbents for processing PET-waste [9][10][11][12] This work presents the potentiality of PET as a low-cost precursor of microporous carbons with promising properties for electrodes in both aqueous (H 2 SO 4 ) and organic (tetraethyl ammonium tetrafluoroborate in acetonitrile) supercapacitors.…”

Section: Introductionmentioning

confidence: 99%

Poly(ethylene terephthalate)-based carbons as electrode material in supercapacitors

Domingo-Garcı́a

Fernández

Almazán-Almazán

et al. 2010

Journal of Power Sources

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Abstract.A systematic study by complementary techniques shows that PET-waste from plastic vessels is a competitive precursor of carbon electrodes for supercapacitors. PET derived-activated carbons follow the general trends observed for highly porous carbons and display specific capacitances at low current density as high as 197 F g -1 in 2M H 2 SO 4 aqueous electrolyte and 98 F g -1 in the aprotic medium 1M (C 2 H 5 ) 4 NBF 4 /acetonitrile. Additionally, high performance has also been achieved at high current densities, which confirms the potential of this type of materials for electrical energy storage.A new method based on the basic solvolysis of PET-waste and the subsequent carbonisation seems to be an interesting alternative to obtain porous carbons with enhanced properties for supercapacitors.

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PET as precursor of microporous carbons: preparation and characterization

Cited by 45 publications

References 24 publications

Conversion of Poly(Ethylene Terephthalate) Waste into Activated Carbon: Chemical Activation and Characterization

Conversion of Poly(Ethylene Terephthalate) Waste into Activated Carbon: Chemical Activation and Characterization

Effect of some thermally unstable magnesium compounds on the yield of char formed from poly(ethylene terephthalate)

Poly(ethylene terephthalate)-based carbons as electrode material in supercapacitors

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