ミナミキュウシュウサン ハクショク ネンド ノ ケンキュウ : ダイ9ホウ ヨシノヤマ ネンド ノ カッセイカ

Generally，clay that the chief ingredient of montmorillonite is useful in various way，and especially is in useful for the purification of petroleum and decoloring agent. The Yoshinoyama clay is montmorillonite as its main substance which is rarely found in the South Kyushu．The author studied the activation of this clay by the change of concentration of sulfuric acid，volume and reacted time，in concequent of this study，the relation of the activation and the reacted time and adsorption of coloring matter is parallel，but the other hand，it is very interesting that the specific surface area is maximum at 0.360 activated percentage and at over activation the area shows a decline and proved it was used as the active clay by this study