2009
DOI: 10.1016/j.fuproc.2008.09.001
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PEEK: An excellent precursor for activated carbon production for high temperature application

Abstract: Os carvões activados (AC) têm sido preparados a partir de uma diversidade de precursores, por activação física e química a diferentes temperaturas, permitindo a obtenção de adsorventes com volumes microporosos, tamanho médio de poros e química superficial muito diversificados. A optimização de algumas das suas propriedades reporta-se quase sempre a um aumento do volume microporoso ou a um ajuste do tamanho médio dos poros, mas raramente são consideradas outras propriedades de relevo como o aumento do rendiment… Show more

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Cited by 16 publications
(18 citation statements)
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“…1 H, 23 Na, 19 F (for NaF and NaBF 4 ) and 15 N (for NaNO 3 , 15 N enriched) static spectra on the electrolyte/P-40 mixture are measured with a 400 MHz pulsed NMR system at 293 K. A single-pulse sequence is used for measurement and the last delay is set long enough to make sure the signal is fully recovered after each scan. Free induction decay data acquisition starts at 5 ms (ringdown time) after the 90°pulse.…”
Section: Methodsmentioning
confidence: 99%
See 2 more Smart Citations
“…1 H, 23 Na, 19 F (for NaF and NaBF 4 ) and 15 N (for NaNO 3 , 15 N enriched) static spectra on the electrolyte/P-40 mixture are measured with a 400 MHz pulsed NMR system at 293 K. A single-pulse sequence is used for measurement and the last delay is set long enough to make sure the signal is fully recovered after each scan. Free induction decay data acquisition starts at 5 ms (ringdown time) after the 90°pulse.…”
Section: Methodsmentioning
confidence: 99%
“…A highquality nanoporous carbon derived from polymer polyetheretherketone (PEEK) 22,23 is used to provide the hydrophobic nanoconfinement in this work (see Methods). The activated carbon sample is designated as P-40 and the average pore size is 0.9 nm from wall surface to wall surface assuming a slit-shaped pore (1.2 nm from carbon centre to carbon centre) according to the previous study 17 .…”
Section: Electroneutrality Breakdown In Nanoconfinementmentioning
confidence: 99%
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“…FT-IR spectral analysis allows the identification of the presence of different functional groups on the surface of a given activated carbon. In the present study, the FT-IR spectra were interpreted using the OMNIC application from the Thermo Nicolet Corporation together with information already published by several authors (ASTM Standard D3860-98; Cansado et al 2009;Ibarra et al 1990;Girods et al 2009;Gomez-Serrano et al 1993Podkoscielny 2008;Yenisoy-Karakas et al 2004). Representative FT-IR spectra, obtained on the untreated ACs and after modification, are illustrated in Figure 2.…”
Section: Chemical Characterisationmentioning
confidence: 99%
“…28 No. 8/9 2010 cationic species (Cansado et al 2008;Chun et al 2004). As far as the solute was concerned, it was mainly in a protonated form at pH < pK a and in a deprotonated form at pH > pK a .…”
Section: Liquid-phase Adsorptionmentioning
confidence: 99%