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A Porous Carbon with Excellent Gas Storage Properties from Waste Polystyrene

Dipartimento di Scienze e Innovazione Tecnologica (DISIT), Università del Piemonte Orientale, via T. Michel 11, I-15121 Alessandria, Italy
School of Engineering, Universtity of Edinburgh, Sanderson Building, R. Stevenson Road, Edinburgh EH11 3AZ, UK
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(5), 726;
Received: 6 March 2019 / Revised: 30 April 2019 / Accepted: 30 April 2019 / Published: 10 May 2019
PDF [671 KB, uploaded 20 May 2019]


In this paper, we describe the synthesis and gas adsorption properties of a porous carbonaceous material, obtained from commercial expanded polystyrene. The first step consists of the Friedel-Craft reaction of the dissolved polystyrene chains with a bridging agent to form a highly-crosslinked polymer, with permanent porosity of 0.7 cm3/g; then, this polymer is treated with potassium hydroxide at a high temperature to produce a carbon material with a porous volume larger than 1.4 cm3/g and a distribution of ultramicro-, micro-, and mesopores. After characterization of the porous carbon and determination of the bulk density, the methane uptake was measured using a volumetric apparatus to pressures up to 30 bar. The equilibrium adsorption isotherm obtained is among the highest ever reported for this kind of material. The interest of this product lies both in its excellent performance and in the virtually costless starting material. View Full-Text
Keywords: porous carbon; hyper-crosslinked polymer; methane storage; waste valorization porous carbon; hyper-crosslinked polymer; methane storage; waste valorization

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Gatti, G.; Errahali, M.; Tei, L.; Mangano, E.; Brandani, S.; Cossi, M.; Marchese, L. A Porous Carbon with Excellent Gas Storage Properties from Waste Polystyrene. Nanomaterials 2019, 9, 726.

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