Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/11288
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Tailoring the textural properties of activated carbon xerogels by chemical activation with KOH

AuthorsZubizarreta, Leire CSIC ORCID; Arenillas de la Puente, Ana CSIC ORCID ; Pirard, Jean-Paul; Pis Martínez, José Juan CSIC; Job, Nathalie
KeywordsCarbon xerogels
Chemical activation
Potassium hydroxyde
Pore texture
Adsorption
Issue Date4-Mar-2008
PublisherElsevier
CitationMicroporous and Mesoporous Materials 115(3): 480-490 (2008)
AbstractResorcinol–formaldehyde xerogels synthesised with different resorcinol/sodium carbonate molar ratios were chemically activated either after drying or after drying and pyrolysis, using potassium hydroxide. It was found that organic (i.e. dried) and carbon (i.e. pyrolysed) xerogels behave differently when subjected to chemical activation. In the case of carbon xerogels, the increase in the microporosity takes place without any significant modification to the meso/macroporosity formed during the synthesis step, leading to micro–mesoporous or micro–macroporous materials with a larger micropore volume. Furthermore, control of the microporosity is possible because its development depends on the amount of KOH used. However, when organic xerogels are activated, mainly microporous materials with BET specific surface areas of up to 2000 m2 g−1 are obtained, there hardly remaining any of the meso/macroporosity formed during the gel synthesis. Thus, the combination of different synthesis conditions and chemical activation with potassium hydroxide allows the textural properties of carbon xerogels to be tailored at both micropore and meso/macropore levels.
Description11 pages, 10 figures, 3 tables.-- Printed version published Nov 1, 2008.
Publisher version (URL)http://dx.doi.org/10.1016/j.micromeso.2008.02.023
URIhttp://hdl.handle.net/10261/11288
DOI10.1016/j.micromeso.2008.02.023
ISSN1387-1811
Appears in Collections:(INCAR) Artículos

Show full item record
Review this work

SCOPUSTM   
Citations

65
checked on May 15, 2022

WEB OF SCIENCETM
Citations

68
checked on May 8, 2022

Page view(s)

366
checked on May 16, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.