Preparation and Structural Characterization of Activated Carbons Based on Polymeric Resin

Park, Soo‐Jin; Jung, Woo-Young

doi:10.1006/jcis.2002.8337

Cited by 24 publications

(11 citation statements)

References 26 publications

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“…Recently, increasing attention has been focused on using polymer precursors as a feedstock for activated carbons. Resorcinol-formaldehyde resins make excellent raw materials for the production of activated carbon with a highlydeveloped porosity and surface area because of the following reasons: the considerably high fixed-carbon content, high inherent purity, controllable macropore and micropore structure and relatively low price of the reagents (Tennison 1998; Hayashi et al 2002;Yamamoto et al 2002;Park and Jung 2002).…”

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confidence: 99%

Preparation and structure characterization of carbons prepared from resorcinol-formaldehyde resin by CO2 activation

2007

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In this work, carbon xerogels with a high pore volume and surface area (up to 2.58 cm 3 /g and 3200 m 2 /g respectively) have been synthesized using the sol-gel polycondensation of resorcinol (R) with formaldehyde (F) in a basic medium of monoethanolamine (MEA), followed by drying and pyrolysis. This medium (MEA) has not been used in previous investigations. The effect of activation with CO 2 on the pore size distribution and the chemical functional groups has been investigated using N 2 (77 K) adsorption, FTIR and elemental analysis techniques. A series of experiments has been conducted to investigate the effect of activation time and activation temperature. Activation of the samples was carried out at 850, 900 and 980°C for times ranging from one to three hours. Within the range of activation conditions, an increase in activation time at 850°C results in a continuous steady rise of the BET surface area and total pore volume. However, at the two higher temperatures, the surface area shows a maximum when plotted against activation time. FT-IR results show that the use of MEA as a catalyst leads to the formation of nitrogen functional groups in the surface of the resin.

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Preparation and structure characterization of carbons prepared from resorcinol-formaldehyde resin by CO2 activation

2007

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“…During this process gaseous activators (mostly steam and carbon dioxide) are formed and react with carbon matrix. This method is not only the way to create new, fine pores but also to enlarge already existing ones [59][60][61][62]. It was shown elsewhere [63][64][65] that the KOH activated carbons prepared from phenolic resins exhibit large pore volumes and high BET surface areas.…”

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confidence: 99%

Development of Microporosity in Mesoporous Carbons

et al. 2009

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Monolithic carbons with uniform and spherical mesopores can be easily obtained by filling the pores of colloidal silica monoliths with carbon precursors followed by carbonization and silica dissolution. In this study three different phenolic resin blends: resorcinol and crotonaldehyde (MC-RC), phenol and paraformaldehyde (MC-PP), and resorcinol and furfural (MC-RF) were used as carbon precursors. Subsequent heating and carbonization of the resulting silica-phenolic resin nanocomposites followed by silica dissolution afforded monolithic carbons with spherical mesopores matching the size of the silica colloids used. Development of microporosity in these carbons was achieved by post-synthesis KOH activation. This study shows that the combination of colloidal templating with post-synthesis activation affords monolithic micro-mesoporous carbons with large specific surface area and welldeveloped accessible porosity for adsorption, catalysis, environmental and energy-related applications.

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“…In practice, coal, coconut shells, wood, peat and fruit stones are most commonly used to manufacture activated carbon. However, in laboratory scale studies, an enormous range of alternative raw materials has been used to produce activated carbons, such as fruit stones [2], tyre [3], municipal solid waste [4], synthetic polymers [5] and acrylic fibres [6]. The use of waste materials to produce activated carbon is preferable because it reduces the cost of the resultant activated carbon.…”

Section: Introductionmentioning

confidence: 99%