화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.10, No.4, 618-622, July, 2004
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Zeolitic Conversion of Cheju Scoria
Byoung Eun Jeon, Byoung Joon Ahn†, Wonghil Chang1, Sang-Kyu Kam2, and Min-Gyu Lee3
  • Department of Chemistry Education, Chonbuk National University, Chonju 561-756, Korea
  • 1Department of Chemistry, Jeonju University, Jeonju 560-759, Korea
  • 2Department of Envrionmental Engineering, Cheju National University, Jeju 690-736, Korea
  • 3Division of Chemical Engineering, Pukyong Naitonal University, Busan 608-739, Korea
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Various zeolite-type materials have been synthesized using Cheju Scoria, which is widely distributed in Cheju Island, Korea. Cheju Scoria is composed mainly of plagioclase, pyroxene, hematite, and aluminosilicate glass. Since the plagioclase and glass components can be used as Si and Al sources, the zeolitic conversion of Scoria was examined using a conventional hydrothermal synthesis under alkaline conditions. Na-Pl zeolite, hydroxy sodalite, nepheline hydrate, analcime, and cancrinite were obtained by using different reaction temperatures and NaOH concentrations. Na-PI was observed at 120 ℃ in 2 M NaOH over a long reaction period, while hydroxy sodalite was formed over a wide range of reaction temperatures, 100 to 150 ℃, in > 3 M NaOH.
Keywords:Cheju Scoria;zeolitic conversion;Na-P1 zeolite;nepheline hydrate;hydroxy socialite
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