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Molecular sieve behaviour of carbon aerogels and xerogels prepared from phloroglucinol-phenol-formaldehyde polymerization
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SYSNO ASEP 0336778 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Molecular sieve behaviour of carbon aerogels and xerogels prepared from phloroglucinol-phenol-formaldehyde polymerization Title Molekulově sítové chování uhlíkatých aerogelů a xerogelů připravených polymerizací phluroglucinol-fenol- formaldehydu Author(s) Jirglová, Hana (UFCH-W) RID, ORCID
Pérez-Cadenas, A. F. (ES)
Hódar, F. J. M. (ES)Source Title Carbon 09. - Biarritz : SARL VACANCES SUD TERRES BASQUES, 2009 Pages id 153 Number of pages 6 s. Action Carbon 09 Event date 14.06.2009-19.06.2009 VEvent location Biarritz Country FR - France Event type WRD Language eng - English Country FR - France Keywords polymerization ; molecular sieves ; carbon aerogels Subject RIV CF - Physical ; Theoretical Chemistry CEZ AV0Z40400503 - UFCH-W (2005-2011) Annotation Carbon aerogels and xerogels are one of the most promising new carbon forms. These materials were first synthesised by Pekala from the sol-gel polycondensation of resorcinol (R) and formaldehyde (F) in aqueous solutions. Although R is the main monomer used today, other carbon precursors have been progressively gaining interest in order to diminish the materials cost maintaining their potential. In this work, the use of phloroglucinol - phenol mixtures to produce porous carbon materials is studied, looking for a synergetic effect of both monomers. Phenol is a cheap raw material, but it is poorly reactive, this lack can be compensated by the high reactivity of phloroglucinol. The influence of the phloroglucinol/phenol ratio, reactant concentration, cure conditions and drying method on the morphology and porosity of the samples is discussed. The gelation time is independent of the phloroglucinol/phenol ratio in spite of the different reactivity of both monomers. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2010
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