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Materials 2018, 11(5), 770; https://doi.org/10.3390/ma11050770

Spherical Activated Carbons with High Mechanical Strength Directly Prepared from Selected Spherical Seeds

MCMA Group, Department of Inorganic Chemistry and Materials Institute, University of Alicante, E-03080 Alicante, Spain
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Received: 21 March 2018 / Revised: 20 April 2018 / Accepted: 4 May 2018 / Published: 10 May 2018
(This article belongs to the Special Issue Porous Materials for Environmental Applications)
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Abstract

In the present manuscript, the preparation of spherical activated carbons (SACs) with suitable adsorption properties and high mechanical strength is reported, taking advantage of the retention of the spherical shape by the raw precursors. An easy procedure (carbonization followed by CO2 activation) has been applied over a selection of three natural seeds, with a well-defined spherical shape and thermal stability: Rhamnus alaternus (RA), Osyris lanceolate (OL), and Canna indica (CI). After the carbonization-activation procedures, RA and CI, maintained their original spherical shapes and integrity, although a reduction in diameter around 48% and 25%, respectively, was observed. The porosity of the resulting SACs could be tuned as function of the activation temperature and time, leading to a spherical activated carbon with surface area up to 1600 m2/g and mechanical strength similar to those of commercial activated carbons. View Full-Text
Keywords: spherical seeds; spherical activated carbons; activation; microporosity; mechanical properties spherical seeds; spherical activated carbons; activation; microporosity; mechanical properties
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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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Amorós-Pérez, A.; Cano-Casanova, L.; Ouzzine, M.; Rufete-Beneite, M.; Romero-Anaya, A.J.; Lillo-Ródenas, M.Á.; Linares-Solano, Á. Spherical Activated Carbons with High Mechanical Strength Directly Prepared from Selected Spherical Seeds. Materials 2018, 11, 770.

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