Influence of the oxygen-containing surface functional groups in the methane hydrate nucleation and growth in nanoporous carbon

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Title: Influence of the oxygen-containing surface functional groups in the methane hydrate nucleation and growth in nanoporous carbon
Authors: Casco, Mirian Elizabeth | Cuadrado-Collados, Carlos | Martinez-Escandell, Manuel | Rodríguez Reinoso, Francisco | Silvestre-Albero, Joaquín
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Oxygen-containing surface | Functional groups | Methane hydrate nucleation and growth | Nanoporous carbon
Knowledge Area: Química Inorgánica
Issue Date: Oct-2017
Publisher: Elsevier
Citation: Carbon. 2017, 123: 299-301. doi:10.1016/j.carbon.2017.07.061
Abstract: Petroleum pitch-derived activated carbon (PP-AC) has proved to be an excellent platform to promote the methane hydrate formation in milder condition than nature, even though the water-to-hydrate yield at the threshold formation pressure of 3.3 MPa is rather low (ca. 13%). Herein, we report that the presence of oxygen-containing surface functional groups in the oxidized carbon analogue (PP-AC_Ox) plays a significant role in the nucleation and growth in the low-pressure region. High-pressure methane adsorption/desorption isotherms revealed an enhancement in the water-to-hydrate yield up to ca. 51% around 3.3 MPa and 2 °C, in an extremely narrow working pressure window, with no hysteresis associated.
Sponsor: Authors acknowledge financial support from MINECO Projects: MAT2016-80285-P and CONCERT Project-NASEMS (PCIN-2013-057), and Generalitat Valenciana (PROMETEOII/2014/004). MEC thanks Alexander von Humboldt foundation for financial support.
ISSN: 0008-6223 (Print) | 1873-3891 (Online)
DOI: 10.1016/j.carbon.2017.07.061
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2017 Elsevier Ltd.
Peer Review: si
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Appears in Collections:INV - LMA - Artículos de Revistas

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