TANSO
Online ISSN : 1884-5495
Print ISSN : 0371-5345
ISSN-L : 0371-5345
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Volume 2008, Issue 234
Displaying 1-5 of 5 articles from this issue
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  • Improvements in char yield and pore properties of wood-derived carbon by iodine treatment
    Kazumasa Nakamura, Yasuhiro Tanabe, Yasunori Nagakura, Takashi Nishiza ...
    2008 Volume 2008 Issue 234 Pages 215-219
    Published: September 01, 2008
    Released on J-STAGE: July 05, 2011
    DOIhttps://doi.org/10.7209/tanso.2008.215
    JOURNAL FREE ACCESS
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    An iodine treatment was applied to wood to seek improvements in char yields and pore-related properties, i.e., surface area, micro-pore volume and its pore-size distribution, of the resultant wood-derived carbons without any other special pre- and post-treatments. Char yields were improved, surface area and micro-pore volumes were increased. The initiation temperature of pyrolysis of the treated woods was decreased, and gases such as CH3I and HI were produced during the pyrolysis. The change in the above-mentioned yields and pore-related properties with the iodine treatment was analyzed using wood-component polymers such as cellulose and lignin. By spectroscopic analyses, iodine in the polymers exists in its ionic state, which may increase the stability of the polymers. Iodine-treated lignin plays a role of the modification of the pyrolysis process in the improvements in the yields and pore-related properties in the resultant wood-derived carbons.
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  • Effect of out-gassing of ZnCl2-activated cattle manure compost (CMC) on adsorptive removal of Cu (II) and Pb (II) ions
    Muhammad Abbas Ahmad Zaini, Kazuya Yoshihara, Reiko Okayama, Motoi Mac ...
    2008 Volume 2008 Issue 234 Pages 220-226
    Published: September 01, 2008
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2008.220
    JOURNAL FREE ACCESS
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    A batch adsorption system was employed to develop the adsorption properties for Cu (II) and Pb (II) by using cattle manure compost (CMC) derived carbons activated by ZnCl2. Langmuir and Freundlich models were applied to describe the adsorption data. The uptake performance of heavy metal ions onto the cattle manure compost activated carbon was evaluated and compared with the commercially available activated carbon, F400. The Langmuir plots were well fitted to linear approximation, and the derived carbons showed favorable adsorption more towards copper (II) than lead (II). Adsorption capacity of copper by out-gassed CMC activated carbons was better than that of out-gassed F400, though it was comparable prior to the de-ashing and out-gassing treatments. Results proposed that nitrogen content of cattle manure compost was responsible for the preferable removal of copper over lead.
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  • A method for origin correction of Raman band frequencies in the first order Raman spectrum for carbon materials and Raman frequency of G band versus d002 plots
    Akira Yoshida, Yutaka Kaburagi, Yoshihiro Hishiyama
    2008 Volume 2008 Issue 234 Pages 227-233
    Published: September 01, 2008
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2008.227
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    A method was developed to correct the Raman frequencies of the D, G and D, bands in the first order Raman spectrum for carbon materials with an incident excitation beam of 514.5 nm. It was demonstrated that the lighting of the Ne lamp set at a proper position in the Raman spectrometer during the measurement of the first order spectrum causes superposition of the 556.28nm line from Ne lamp at 1458.52cm-1 in Raman shift scale on the first order Raman spectrum, being of use as a standard. There could be a practical application on the plots of the Raman frequency of the G band (G-RF) vs. interlayer spacing don for carbon materials in assessing quality. The method is demonstrated for determination of G-RF for a cleaved surface of a kish graphite, an HOPG edge plane, PC basal planes, a polished surface of commercially available isotropic graphite, a buffed surface of glass-like carbon and side surfaces of benzene-derived vapor-grown carbon fibers.
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  • Production process and major applications for isotropic graphite
    Jun Tojo
    2008 Volume 2008 Issue 234 Pages 234-243
    Published: September 01, 2008
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.7209/tanso.2008.234
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  • Preparation of nanocarbons using polymer blend technique
    Terukazu Sandou, Jun-ichi Ozaki, Asao Oya
    2008 Volume 2008 Issue 234 Pages 244-250
    Published: September 01, 2008
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2008.244
    JOURNAL FREE ACCESS
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