Controlling carbon microporosity: the structure of carbons obtained from different phenolic resin precursors

Lenghaus, Keith; Qiao, Greg G.; Solomon, David H.; Gómez, Carlota González; Rodriguez-Reinoso, F.; Sepúlveda-Escribano, A.

doi:10.1016/s0008-6223(01)00194-4

Cited by 62 publications

(46 citation statements)

References 16 publications

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“…These values are comparable with or even higher than other researches using synthetic polymer as precursor using activation processes (chemical or physical activations) [1,[13][14]. In line with N 2 -adsorption isotherm, it seems that the carbon produced from polymeric precursor in the presence of resorcinol has lower both of the percentage of micropore surface area, S mic , and the percentage of micropore volume, V mic , than carbon produced from PF polymer.…”

Section: Pore Structure Of the Carbonssupporting

confidence: 80%

“…It has been generally known that the pore structure of the porous carbon is affected by the nature of the precursor, pyrolysis method, and post-treatment conditions (activation processes) [14][15][16]. Phenolic formaldehyde polymers have been increasingly used as precursor for porous carbon preparation due to its specific three dimensional structures of the polymer framework and thermosetting properties [17], however there has not been a systematic effort to relate the structural properties and the morphologies of the carbonized polymers to the type and the composition of the reactant used in the polymerization processes.…”

Section: Introductionmentioning

confidence: 99%

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Simple Method to Produce Nanoporous Carbon for Various Applications by Pyrolysis of Specially Synthesized Phenolic Resin

Prasetyo¹,

Rochmadi²,

Ariyanto³

et al. 2013

Indones. J. Chem.

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Section: Pore Structure Of the Carbonssupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Simple Method to Produce Nanoporous Carbon for Various Applications by Pyrolysis of Specially Synthesized Phenolic Resin

Prasetyo¹,

Rochmadi²,

Ariyanto³

et al. 2013

Indones. J. Chem.

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“…These carbons are kinetic adsorbents that separate N 2 from air by faster sorption of O 2 . 11 The results of being able to control the process of carbonization so as to give a particular pore structure are potentially very interesting 12 for all the applications that are described below.…”

Section: Ultramicroporous and Mesoporous Carbonsmentioning

confidence: 99%

Why are carbon molecular sieves interesting?

Oliveira

Pires

Pastore

2006

J. Braz. Chem. Soc.

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Este trabalho descreve os métodos de produção e os usos potenciais das peneiras moleculares de carbono. A principal rota sintética para estes materiais é a replicação, onde uma peneira molecular de sílica ou aluminossilicato é usada como gabarito (template) para o crescimento de uma fase carbonácea nos seus canais e cavidades. Estes materiais podem ter aplicações tão variadas como separação, adsorção e armazenamento de gases, como eletrodos em baterias e como suportes de catalisadores, todas elas extremamente dependentes da porosidade da peneira molecular de carbono. This paper describes the production methods and the prospective uses of carbon molecular sieves. The main route to these materials is replication synthesis, where a silica or aluminosilicate molecular sieve is used as template to grow the carbonaceous phase in the voids. These materials may have applications as varied as in separation, adsorption and storage of gases, as electrodes in batteries, and as catalyst supports, all of them highly dependent on the molecular sieve porosity.

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“…12) Qian et al 13) suggested that during the pyrolysis of phenolic resin, weight loss occurs at about 200°C, and rapidly develops above 450°C, indicating the formation of a great deal of gases. Weight loss rate reaches the maximum value at approximately 550°C, and evidently decreases above 600°C, hardly varies above 800°C.…”

Section: Introductionmentioning

confidence: 99%

Effect of preforms on the synthesis of micro .BETA.-SiC from phenol resin and silicon

Sharif

Sueyoshi

2008

J. Ceram. Soc. Japan

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The aim of present study is to investigate the effect of preforms on the synthesis of micro β-SiC. For this purpose, preforms were prepared from commercially available phenol resin and silicon powders by pyrolysing at 650°C and 750°C in vacuum. Then, preforms were hot isostatically pressed (HIPed) at 1400°C for 10 min in an argon atmosphere of 50 MPa to synthesize micro β-SiC. X-ray diffraction analyses showed that the formation of β-SiC was enhanced in the specimens prepared by HIPing the preforms pyrolyzed at 750°C, which might be due the more carbonization and the development of porous structure in the range 600-800°C. Scanning electron microscopy observations revealed the formation of micro-crystals (up to 8 μm in size) with facets in the HIPed specimens. In addition, the degree of crystallites in the specimen obtained from the preforms pyrolyzed at 750°C was higher than the preforms pyrolyzed at 650°C. The energy dispersive spectroscopy showed that crystals were of SiC because the atomic ratio of silicon and carbon atoms in the crystals was almost 1 : 1. The density of the specimens obtained by HIPing the preforms pyrolyzed at 750°C was (3.11 g/cm 3 ) more than the specimens obtained by HIPing preforms pyrolyzed at 650°C (2.95 g/cm 3 ). The HIPing process, in addition to densification, led to the formation and growth of β-SiC.

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Controlling carbon microporosity: the structure of carbons obtained from different phenolic resin precursors

Cited by 62 publications

References 16 publications

Simple Method to Produce Nanoporous Carbon for Various Applications by Pyrolysis of Specially Synthesized Phenolic Resin

Simple Method to Produce Nanoporous Carbon for Various Applications by Pyrolysis of Specially Synthesized Phenolic Resin

Why are carbon molecular sieves interesting?

Effect of preforms on the synthesis of micro .BETA.-SiC from phenol resin and silicon

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