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  • 2005-2009  (2)
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Materialart
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  • 2005-2009  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    Adsorption Properties of Activated Carbon Fibers Characterized by Electric Decomposition (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 124-126 (June 2007), p. 1837-1840 
    Details
    ISSN: 1662-9779
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Physik
    Notizen: Pitch based activated carbon fibers(ACFs) were characterized by electric decompositionmethod in the various kinds of acid electrolyte. The felt-type commercialized ACFs were used as rawmaterial and the acids such as HCl, H2SO4, HNO3 and HF were used as electrolytes for electricdecomposition. ACFs were treated with 0.7 ~ 2.0A/g-ACF of DC as an anode material for few hoursin the acid electrolyte bath and voltage was varied 10~50V according to the condition of current andelectrolyte. The pore properties of surface characterized ACFs were measured by adsorption analyzerand changes of surface morphology were also observed by scanning electron microscope andtransmitting electron microscope. In order to estimate possibility of use as hydrogen storage material,hydrogen adsorption amount was measured with high pressure thermogravimetric analyzer. In theresult the pore size distribution of surface characterized ACFs were changed with respect to electricdecomposition condition, especially species and concentration of electrolytes and hydrogenadsorption amount also changed according to pore properties of ACFs
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.124-126.1837.pdf
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  • 2
    Digitale Medien
    Digitale Medien
    Methane Storage on Surface Modified Activated Carbons (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 135 (Feb. 2008), p. 73-76 
    Details
    ISSN: 1662-9779
    Quelle: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Thema: Physik
    Notizen: In this study, methane gas absorption ability of activated carbon (AC) with surfacefunctional group effect, was evaluated after nitric acid and urea treatment of AC surface. Specificsurface area and pore distribution of AC were studied through nitrogen absorption isotherm at 77 K.Micro pore volume was calculated through H-K method. Absorbed methane amount was evaluatedthrough volumetric method at room temperature by using auto absorption apparatus. Absorbedmethane amount of AC was found to increase with specific surface area increase. Correlationproposed between the methane absorption amount and surface nature indicates that the surfacenature plays an important role on the absorption amount at a given temperature
    Materialart: Digitale Medien
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.135.73.pdf
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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