Characterization of activated carbon fibers with high surface area

1994 ◽  
pp. 689-694
Author(s):  
Matti Nieminen ◽  
Jussi Ranta ◽  
Janne Laine ◽  
Pertti Nousiainen
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Carbon Fibers ◽  
High Surface ◽  
High Surface Area ◽  
Activated Carbon Fibers ◽  
Characterization Of Activated Carbon

scholarly journals Karakteristik luas permukaan karbon aktif dari ampas tebu dengan aktivasi kimia

2018 ◽  
Vol 10 (3) ◽  
pp. 149
Author(s):  
Mahmud Sudibandriyo ◽  
L Lydia
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Sugarcane Bagasse ◽  
Chemical Activation ◽  
High Surface ◽  
High Surface Area ◽  
Physical Activation ◽  
Mass Ratio ◽  
Characterization Of Activated Carbon

Surface area characterization of activated carbon from sugarcane baggase by chemical activationAdsorption is one the process with many applications in the industries such as in a separation or in gas storage. In this adsorption, adsorbent selection is the most important thing. One of the adsorbent most suitable for this process is activated carbon. Previous studies show that high surface area of activated carbon can be produced from sugarcane bagasse using activator ZnCl2. The research’s goal is to produce activated carbon from sugarcane bagasse and determine the effects of activator on the surface area of activated carbon produced. Activators used in this research are KOH and ZnCl2 with the mass ratio of activator/carbon are 1/1, 2/1 and 3/1. The results show that The highest surface area, 938,2 m2/g, is obtained by activation using KOH with mass ratio of activator/carbon 3/1, whereas the highest surface area by activation using ZnCl2 is 632 m2/g with mass ratio of activator/carbon 2/1. For comparison, preparation of activated carbon by physical activation is also done and the surface area is 293 m2/g.Keywords: Activated carbon, chemical activation, sugarcane bagasse, KOH, ZnCl2 Abstrak Adsorpsi merupakan salah satu proses yang banyak digunakan dalam industri baik dalam pemisahan maupun untuk penyimpanan gas. Pada proses adsorpsi ini, pemilihan adsorben merupakan hal yang sangat penting. Salah satu jenis adsorben yang sangat cocok untuk proses ini adalah karbon aktif. Penelusuran studi sebelumnya menunjukkan bahwa karbon aktif dengan luas permukaan yang cukup tinggi dapat dibuat dari ampas tebu dengan menggunakan aktivator ZnCl2. Penelitian ini bertujuan untuk menghasilkan karbon aktif dari ampas tebu dengan aktivasi kimia serta mengetahui pengaruh aktivator terhadap luas permukaan karbon aktif yang dihasilkan. Aktivator yang digunakan dalam penelitian ini adalah KOH dan ZnCl2 dengan rasio massa aktivator/massa karbon 1/1, 2/1, dan 3/1. Aktivasi dilakukan pada temperatur 700 oC selama 1 jam. Hasil penelitian menunjukkan bahwa luas permukaan tertinggi sebesar 938,2 m2/g diperoleh dengan aktivasi menggunakan KOH dengan rasio massa aktivator/massa arang 3/1, sedangkan aktivasi dengan menggunakan ZnCl2 diperoleh luas permukaan tertinggi sebesar 632 m2/g dengan rasio massa aktivator/massa arang 2/1. Sebagai pembanding, pada penelitian ini juga dilakukan pembuatan karbon aktif dengan metode aktivasi fisika dan diperoleh luas permukaan karbon aktif sebesar 293 m2/g.Kata kunci: Aktivasi kimia, ampas tebu, karbon aktif, KOH, ZnCl2

Preparation and Characterization of Fibrous Cerium Oxide Templated from Activated Carbon Fibers

2005 ◽  
Vol 876 ◽  
Author(s):  
Mark Crocker ◽  
Uschi M. Graham ◽  
Rolando Gonzalez ◽  
Erin Morris ◽  
Gary Jacobs ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Surface Area ◽  
Cerium Oxide ◽  
Carbon Fibers ◽  
High Surface ◽  
Nitrate Solution ◽  
High Surface Area ◽  
Cerium Nitrate ◽  
Activated Carbon Fibers ◽  
Templating Method

AbstractHigh surface area cerium oxide has been prepared using a carbon templating method. Impregnation of a highly mesoporous activated carbon (Darco KB-B) with an aqueous solution of cerium nitrate, followed by carbon burn off, afforded ceria with surface area of up to 148 m2/g. According to thermogravimetric studies, ceria formation proceeds via decomposition of cerium nitrate at ca. 410 K; oxidation of the carbon template commences at the same temperature, being facilitated by the release of NO2 from the Ce compound. Use of activated carbon fibers (ACFs) as template was found to provide a simple route to fibrous cerium oxide. The lower surface areas (3 - 59 m2/g) of the resulting ceria fibers reflect the largely microporous nature of the ACFs; evidently the Ce nitrate solution is unable to penetrate their micropores. Consequently, the surface area of the ceria product is found to increase with increasing mesoporosity of the ACF template. Electron microscopy reveals that the ceria fibers are composed of highly crystalline primary particles of 5-10 nm diameter; further, the fibers display a number of interesting morphological features at the macro- and nano-scales.

scholarly journals Characterization of Activated Carbon Fibers

1990 ◽  
Vol 209 ◽  
Author(s):  
A. W. P. Fung ◽  
A. M. Rao ◽  
K. Kuriyama ◽  
M. S. Dresselhaus ◽  
G. Dresseliiaus ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Low Temperature ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Carbon Fibers ◽  
Disordered Systems ◽  
Activated Carbon Fibers ◽  
Characterization Of Activated Carbon

AbstractLow-temperature electrical conductivity and Raman scattering are studied as characterization tools for activated carbon fibers, which have a high density of defects and a huge specific surface area. The transport mechanism at low temperature is governed by variablerange hopping, as in other strongly disordered systems. From the Raman spectra obtained, we deduce that the long phenolic fibers are more disordered than the acrylic fibers and that increased specific surface area corresponds to increased disorder. The average in-plane microcrystallite size is about 20–30 Å.

scholarly journals Developing Lignosulfonate-Based Activated Carbon Fibers

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1877 ◽  
Author(s):  
Feng-Cheng Chang ◽  
Shih-Hsuan Yen ◽  
Szu-Han Wang
Keyword(s):  
Weight Loss ◽  
Activated Carbon ◽  
Surface Area ◽  
Carbon Fibers ◽  
Loss Rate ◽  
High Surface ◽  
High Surface Area ◽  
Physical Activation ◽  
Activated Carbon Fibers ◽  
Weight Loss Rate

In this study, electrospinning technology, physical activation, and carbonization processing were applied to produce lignosulfonate-based activated carbon fibers. The porous structure of the produced lignosulfonate-based activated carbon fibers primarily contained mesopores and a relatively small amount of micropores. Moreover, insufficient carbonization caused fiber damage during CO2 activation. The weight loss rate and specific surface area increased with increase in carbonization time, and products with carbonization temperatures of 700 °C were of higher quality than those with other temperatures. Moreover, the two-step carbonization process provided fibers with improved quality because of a low weight loss rate, improved processing, and high surface area. Lignosulfonate-based activated carbon fibers can be used as a highly efficient adsorption and filtration material, and further development of its applications would be valuable.

Characterization of Activated Carbon Fibers by CO2Adsorption

Langmuir ◽  
1996 ◽  
Vol 12 (11) ◽  
pp. 2820-2824 ◽  
Author(s):  
D. Cazorla-Amorós ◽  
J. Alcañiz-Monge ◽  
A. Linares-Solano
Keyword(s):  
Activated Carbon ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Characterization Of Activated Carbon
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