In this study, zeolitic materials at Na2CO3/CFA ratio of 0.6 1.8 were synthesized from coal fly ash from a thermal power plant using a fusion/hydrothermal method. The zeolitic materials were found to have cubic crystals structure and X-ray diffraction (XRD) peaks of Na-A zeolite by XRD and SEM analysis. When the zeolitic materials were synthesized from the coal fly ash, the XRD peaks of the zeolitic materials at Na2CO3/CFA ratios of 0.9-1.8 had the same location as the XRD peaks of commercial Na-A zeolite. The XRD peaks of the Na-A zeolite (Na12Al12Si12O4827.4H2O) were confirmed in the 2θ in the range of 7.18-34.18. However, it was also confirmed that peaks of CaCO3, an impurity inhibiting synthesis of Na-A zeolite from CaO and Na2CO3 in the coal fly ash, occurred in the XRD peaks of the zeolitic materials at Na2CO3/CFA ratio of 1.5-1.8. The crystallinities of the zeolitic materials tended to increase gradually within the Na2CO3/CFA ratio range of 0.6-1.8.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험재료
  2.2. 합성 방법
  2.3. 분석 방법
 3. 결과 및 고찰
  3.1. 석탄비산재의 특성 분석
  3.2. 제올라이트화 물질의 결정화 조건
 4. 결 론
 REFERENCES

• 이창한(부산가톨릭대학교 환경행정학과) | Chang-Han Lee (Department of Environmental Adminstration, Catholic University of Pusan) Corresponding author