TANSO
Online ISSN : 1884-5495
Print ISSN : 0371-5345
ISSN-L : 0371-5345
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Volume 2, Issue 3
Displaying 1-7 of 7 articles from this issue
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  • Studies on manufacture of electric carbons IX
    Knowledges to a pitch coke obtained from a coaltar by carbonising with sulphur flower
    Genkichi Ichinose, Masaichi Kawasaki
    1952 Volume 2 Issue 3 Pages 91-95
    Published: March 10, 1952
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2.91
    JOURNAL FREE ACCESS
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    Yield of pitch cokes rised from 23 to 40% by addition of 20% sulphur flower to a dehydrated tar at carbonisation process.
    The pitch coke, however, consisted of minuter crystallites of carbon hardly graphitisable, and molded carbons from the coke have harder and stronger characters than ordinary products.
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  • On the Free Carbon in Coal-tar-pitch
    Hideo Akamatu, Hiroshi Takahashi
    1952 Volume 2 Issue 3 Pages 95-97
    Published: March 10, 1952
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.7209/tanso.2.95
    JOURNAL FREE ACCESS
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    From coal-tar-pitch, free carbon was separated by the extraction of solubl e mattersin toluene and glacial acetic asid. Free carbon (Residue B) was further separated into three fractions (B1, B2, B3) by the extraction with toluene and pyridine in autoclave . The procedure is shown in Table 1. The X-ray diffraction patterns of those fractions are as sumed to be the carbon-pattern, and the dimensions of crystallites were calculated (Table 3). The authors consider that “free carbon” is made of larger molecules of condensed-aromatic type of hydrocarbons, and the Residue B3 is most suitable fraction to be called as “carbon”.
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  • Studies on the Commercial Active Carbon
    (I) Adsorption Mechanism of Commercial Active Carbon in Liquid Phase
    Go Okamoto, Takeshi Okura, Shigeo Takeuchi
    1952 Volume 2 Issue 3 Pages 98-104
    Published: March 10, 1952
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2.98
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    A study on the adsorption mechanism of the commercial active carbon in liquid phase was made, from electrochemical as well as structural stand points.
    It seemed that the adsorptive power was greatly controlled by the pore size distribution.
    The determining factor for the adsorptive power was the appropriate pore size for the substance to be adsorbed, and the electrochemical property on the surface was found to be rather minor factor.
    Ash content and quality or certain other impurities (for example some anion etc .) in commercial active carbon showed certain effect on the adsorptive power for small ions such as inorganic monomeric ion, but little effects for substances having large radius such as organic dyestuff.
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  • Studies on the Commercial Active Carbon
    (II) Adsorption Mechanism of HgCl2 on the Commercial Active Carbon
    [in Japanese], [in Japanese], [in Japanese]
    1952 Volume 2 Issue 3 Pages 105-109
    Published: March 10, 1952
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2.105
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    In order to establish the adsorption mechanism of HgCl2 on commercial active carbon, the adsorption amount, were determined by the analysis of He++and Cl- separately on supernatant solution, observing the pH change at the same time.
    It was concluded that considerably larger of HgCl2 was adsorbed as the state of HgOHCl on active carbon.
    It was also found that, though an extremely small amount, certain inorganic impurities in active carbon was exchanged by Hg+ and liberated into solution by the method of chemical and spectroscopic analysis.
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  • Studies on Carbon Black.(VI)
    Heat Treatment of Carbon Black.(1) On Miike Gosei Carbon Black # 20
    Sei Sengoku, Haruo Kurahashi
    1952 Volume 2 Issue 3 Pages 200-205
    Published: March 10, 1952
    Released on J-STAGE: March 01, 2011
    DOIhttps://doi.org/10.7209/tanso.2.200
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    Evaluating the changes of properties of acarbon black (Miike Gosei Carbon Black #20) which was graphitized at 1600°C-2500°C by the kryptol furnace method, following results were obtained.
    As the heating temperature arises-
    (1) Amount of ash, volatile matter and acetone extractive.…Decreases.
    (2) Amount of Iodine adsorption.…No obvious change.
    (3) Specific gravity.…Up to 1800°C arises and after that no obvious change.
    (4) Ignition temperature.…Ditto.
    (5) Electric resistance.…Up to 1600°C decreases, from then up to 1800°C increases and after that gradually decreases.
    (6) Shape of particle.…At 1600°C edges appear and from 1800°C those edges become sharper and more numerous.
    (7) Diameter and surface area of particle.…No obvious change.
    (8) Lattice constant and size of crystallite.…Up to 2500°C lattice constant a increases very slightly (within 0.8%) and c decreases more sensitively. Size of crystallite (La, Lc) increases rapidly up to 1800°C but after that rather slowly.
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  • Research Works on Carbon Brushes in Japan sosietr for the promotion of Research
    Tomoyuki Somiya
    1952 Volume 2 Issue 3 Pages 206-208
    Published: March 10, 1952
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2.206
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  • [title in Japanese]
    [in Japanese]
    1952 Volume 2 Issue 3 Pages 209-213
    Published: March 10, 1952
    Released on J-STAGE: June 28, 2010
    DOIhttps://doi.org/10.7209/tanso.2.209
    JOURNAL FREE ACCESS
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