Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures

Hydrochar, i.e., hydrothermally carbonized biomass, is generating great interest as a precursor for the synthesis of advanced carbon materials owing to economical, sustainability, and availability issues. Hereby, its versatility to produce adsorbents with a porosity adjusted to the targeted applicat...

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Autores: Sevilla Solís, Marta, Sangchoom, Wantana, Balahmar, Norah, Fuertes Arias, Antonio Benito, Mokaya, R.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/136946
Acceso en línea:http://hdl.handle.net/10261/136946
Access Level:acceso abierto
Palabra clave:Mesoporosity
Hydrogen
Carbon dioxide
Hydrothermal carbonization
Chemical activation
Melamine
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spelling Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High PressuresSevilla Solís, MartaSangchoom, WantanaBalahmar, NorahFuertes Arias, Antonio BenitoMokaya, R.MesoporosityHydrogenCarbon dioxideHydrothermal carbonizationChemical activationMelamineHydrochar, i.e., hydrothermally carbonized biomass, is generating great interest as a precursor for the synthesis of advanced carbon materials owing to economical, sustainability, and availability issues. Hereby, its versatility to produce adsorbents with a porosity adjusted to the targeted application, i.e., low or high pressure gas adsorption applications, is shown. Such tailoring of the porosity is achieved through the addition of melamine to the mixture hydrochar/KOH used in the activation process. Thereby, high surface area carbons (>3200 m2 g–1) with a bimodal porosity in the micromesopore range are obtained, whereas conventional KOH chemical activation leads to microporous materials (surface area <3100 m2 g–1). The micromesoporous materials thus synthesized show enhanced ability to store both H2 and CO2 at high pressure (≥20 bar). Indeed, the uptake capacities recorded at 20 bar, ca. 7 wt % H2 (−196 °C) and 19–21 mmol CO2 g–1 (25 °C) are among the highest ever reported for porous materials. Furthermore, the micromesoporous sorbents are far from saturation at 20 bar and achieve much higher CO2 uptake at 40 bar (up to 31 mmol of CO2 g–1; 25 °C) compared to 23 mmol of CO2 g–1 for the microporous materials. In addition, the micromesoporous materials show enhanced working capacities since the abundant mesoporosity ensures higher capture at high uptake pressure and the retention of lower amounts of adsorbed gas at the regeneration pressure used in PSA systems.This research work was supported by Spanish Ministerio de Economía y Competitividad, MINECO (MAT2012-31651), and by Fondo Europeo de Desarrollo Regional (FEDER). M. S. thanks the Ministerio de Ciencia e Innovación for her Ramón y Cajal contract. We thank the Rajamangala University of Technology Srivijaya (RMUTSV), Thailand for funding and a studentship for WS, and the Kingdom of Saudi Arabia for funding a PhD studentship for NB.Peer reviewedAmerican Chemical SocietyMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/136946reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1021/acssuschemeng.6b00809Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1369462026-05-22T06:33:51Z
dc.title.none.fl_str_mv Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
title Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
spellingShingle Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
Sevilla Solís, Marta
Mesoporosity
Hydrogen
Carbon dioxide
Hydrothermal carbonization
Chemical activation
Melamine
title_short Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
title_full Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
title_fullStr Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
title_full_unstemmed Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
title_sort Highly Porous Renewable Carbons for Enhanced Storage of Energy-Related Gases (H2 and CO2) at High Pressures
dc.creator.none.fl_str_mv Sevilla Solís, Marta
Sangchoom, Wantana
Balahmar, Norah
Fuertes Arias, Antonio Benito
Mokaya, R.
author Sevilla Solís, Marta
author_facet Sevilla Solís, Marta
Sangchoom, Wantana
Balahmar, Norah
Fuertes Arias, Antonio Benito
Mokaya, R.
author_role author
author2 Sangchoom, Wantana
Balahmar, Norah
Fuertes Arias, Antonio Benito
Mokaya, R.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Mesoporosity
Hydrogen
Carbon dioxide
Hydrothermal carbonization
Chemical activation
Melamine
topic Mesoporosity
Hydrogen
Carbon dioxide
Hydrothermal carbonization
Chemical activation
Melamine
description Hydrochar, i.e., hydrothermally carbonized biomass, is generating great interest as a precursor for the synthesis of advanced carbon materials owing to economical, sustainability, and availability issues. Hereby, its versatility to produce adsorbents with a porosity adjusted to the targeted application, i.e., low or high pressure gas adsorption applications, is shown. Such tailoring of the porosity is achieved through the addition of melamine to the mixture hydrochar/KOH used in the activation process. Thereby, high surface area carbons (>3200 m2 g–1) with a bimodal porosity in the micromesopore range are obtained, whereas conventional KOH chemical activation leads to microporous materials (surface area <3100 m2 g–1). The micromesoporous materials thus synthesized show enhanced ability to store both H2 and CO2 at high pressure (≥20 bar). Indeed, the uptake capacities recorded at 20 bar, ca. 7 wt % H2 (−196 °C) and 19–21 mmol CO2 g–1 (25 °C) are among the highest ever reported for porous materials. Furthermore, the micromesoporous sorbents are far from saturation at 20 bar and achieve much higher CO2 uptake at 40 bar (up to 31 mmol of CO2 g–1; 25 °C) compared to 23 mmol of CO2 g–1 for the microporous materials. In addition, the micromesoporous materials show enhanced working capacities since the abundant mesoporosity ensures higher capture at high uptake pressure and the retention of lower amounts of adsorbed gas at the regeneration pressure used in PSA systems.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/136946
url http://hdl.handle.net/10261/136946
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1021/acssuschemeng.6b00809
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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