セリサイトにおける陽イオン吸着性並びに固着性のカオリナイトとの比較 : 粘度鉱物の乾燥による吸着陽イオンの固着現象 (第5報)

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The adsorptive characters of the monovalent cations, Li+, Na+, in sericite and kaolinite were evaluated from the dissociabilities and the amounts of exchangeable ions in relation to the kind of ions and to the specific surface of the clay minerals. These data were obtained as a contribution to the advanced knowledge of the cationic fixation phenomenon in clay minerals, which has been reported in part I of this series presented in this journal.For the comparison of the natures of fixation of two clay minerals, the changes in exchangeabilities and in the mean free bonding energies of the ions due to the drying at the temperatures below 600°C, were investigated.From the obtained experimental results, the newly derived conclusions are summarized as follows:(1) The monovalent ions held on sericite surface are more liable to dissociate than those held on kaolinite (i, e., less strongly held on sericite than on kaolinite).(2) The exchangeable cations held on sericite can be fixed nonexchangeably, but less intensively than those held on kaolinite, the phenomenon which may be attributed to the less strong adsorptive power of sericite.(3) The tendency of fixation in sericite is accelerated with the increase of specific surface by milling.
社団法人日本セラミックス協会の論文
1960-04-01