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Effects of CO2 activation of carbon aerogels leading to ultrahigh micro-meso porosity
dc.contributor.author | Rasines, Gloria | |
dc.contributor.author | Macías, Carlos | |
dc.contributor.author | Haro, Marta | |
dc.contributor.author | Jagiello, Jacek | |
dc.contributor.author | Ovín Ania, María Concepción | |
dc.date.accessioned | 2016-05-10T11:15:26Z | |
dc.date.available | 2016-05-10T11:15:26Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | RASINES, Gloria, et al. Effects of CO 2 activation of carbon aerogels leading to ultrahigh micro-meso porosity. Microporous and Mesoporous Materials, 2015, vol. 209, p. 18-22. | ca_CA |
dc.identifier.issn | 1387-1811 | |
dc.identifier.uri | http://hdl.handle.net/10234/159492 | |
dc.description.abstract | We have analyzed the effects of CO2 activation on the porosity of ultrahigh pore volume carbon aerogels. Data obtained from the new 2D-NLDFT-HS model for carbons has been compared to the results of conventional methods (BJH, t-plot, DR); all the models were applied to the desorption branch of the isotherms. Physical activation of the carbon aerogel at different burn-off degrees resulted in materials showing increasing volume of micropores and alteration of mesopore structure. The later effect manifested itself by a characteristic inflection in the desorption branch of the nitrogen isotherm at high relative pressures. Such curvatures are attributed to a non uniform activation of the carbon matrix with CO2 that in some parts carves the surface of the precursor deeper than in others, creating bimodal/multimodal pore size distributions. The different methods applied for the assessment of the textural properties of the aerogels with ultrahigh micro-/mesoporosity showed excellent agreement in terms of pore volumes, surface areas and average pore size. | ca_CA |
dc.description.sponsorShip | The authors thank the financial support of the Spanish MINECO (grant CTM2011/023378). | ca_CA |
dc.format.extent | 5 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.relation.isPartOf | Microporous and Mesoporous Materials, 2015, vol. 209 | ca_CA |
dc.rights | Copyright © 2016 Elsevier B.V. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | aerogels | ca_CA |
dc.subject | ultra-high micro-meso porosity | ca_CA |
dc.subject | physical activation | ca_CA |
dc.subject | textural characterization | ca_CA |
dc.title | Effects of CO2 activation of carbon aerogels leading to ultrahigh micro-meso porosity | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1016/j.micromeso.2015.01.011 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://www.sciencedirect.com/science/article/pii/S1387181115000232 | ca_CA |
dc.type.version | info:eu-repo/semantics/submittedVersion |
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