過酸化水素処理黒鉛への水、窒素およびアルゴンの吸着

概要

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Natural graphite pretreated in H(2)O(2)aq.soln. was measured volumetrically for its adsorption isotherms of H(2)O, N(2) and Ar and its gas contents of both H(2)O and CO(2) as well. The graphite thus pretreated was further pyrolyzed at 1000℃ and measured in the same way. The anomalies appeared in the adsorption isotherms were investigated comprehensively on the basis of the gas contents and the porosity estimated from the isotherms. It was eventually found that the H(2)O(2) oxidation diminished roughness in prism plane of the graphite to considerably reduce its surface area ; the pyrolysis after the oxidation raised the surface area nearly to a level ofthe original graphite before the oxidation. Such an increase in the surface area is conjectured due to cleavage of the graphite.
津山工業高等専門学校の論文