The Study on the CEC Increase and Granulation of Natural Zeolite -2. Effects of Temperature and Time on the Recrystallization of Natural Zeolite

천연(天然)Zeolite의 CEC 증가(增加)와 입단화(粒團化)에 관(關)한 연구(硏究) -2. 반응(反應) 온도(溫度)와 반응(反應) 시간(時間)의 영향(影響)

The magnitute of CEC of the reaction product which was produced by the treatment of the natural zeolite power(CEC : 67me/100g) with 3N-NaOH at $80^{\circ}C$ for 30 hours was determined to be about 260me/100g, which was the highest value in all reaction products. By the NaOH-treatment the contents of major clay minerals in natural zeolite was shown to be decreased and it is apparent that new phillipsite was synthesized. Furthermore it is interesting that the phillipsite contents was increased with longer reaction time and higher temperature. After 30 hours treatment the dorminant clay mineral in the reaction product was found to be phillipsite.

CEC가 67me/100g되는 천연(天然)zeolite 미분(微粉)을 3N-NaOH용액(溶液)에서 $80^{\circ}C$로 30시간(時間) 처리(處理)한 결과(結果), 반응생성물(反應生成物)의 CEC는 약 260me/100g으로 증가(增加)하였으며 서로 다른 반응조건(反應條件) 하(下)의 반응(反應) 생성물(生成物)중 가장 높았다. NaOH용액(溶液)을 처리(處理)하여 생성(生成)된 반응생성물(反應生成物)에는 천연(天然) zeolite에 함유(含有)되었던 clinoptilolite, mordenite 및 smectite의 함량(含量)은 감소(減少)하였으나 phillipsite로 새롭게 나타났다. 반응온도(反應溫度)와 반응시간(反應時間)이 증가(增加)할수록 phillipsite의 함량(含量)이 증가(增加)하였다. 30시간반응(時間反應) 후(後)에는 phillipsite가 주(主)된 점토광물(粘土鑛物)로 나타났다.