黒鉛への水の吸着
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The adsorption site for water on graphite was investigated by measuring the adsorption isotherms of water, the surface gas contents and the amounts of the acidic surface oxides. As a result, it is found that a pair of surface oxides which can evolve CO2 and H2O simultaneously by pyrolysis is the most active site and that of surface oxides which can expel only H2O by the pyrolysis is the second one. The CO-desorbing oxides are also found to work cooperatively with two pairs of oxides mentioned above. The chemisorption of H2O onto graphite was also studied by repeating the 1000℃ pyrolysis and the adsorption of water at room temperature alternately. The result shows that water gets chemisorbed onto graphite over the whole pressure range even at room temperature and that at the same time the micropore filling of water proceeds in the slit-shaped pores which were formed by the pyrolysis.
- 津山工業高等専門学校の論文
- 1993-10-30
津山工業高等専門学校 | 論文
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