Abstract Synthesis of zeolitic materials with coal fly ash (CFA) using a fusion/hydrothermal method was performed by various crystallization parameters such as aging time, crystallization time, crystallization temperature, and Na2CO3/CFA ratio. When the zeolitic materials were synthesized from the CFA, the XRD peaks of zeolitic materials located almost the same as the XRD peaks of commercial Na-A zeolite at optimization crystallization conditions such as Na2CO3/CFA ratio of 1.8, aging time of 5 h at the room temperature, crystallization time of 5 h, and crystallization temperature of 90 °C. The zeolitic materials were found to be identified the crystals structure of the Na-A zeolite and the formation of sharp-edged cubes by X-ray diffraction (XRD) and scanning electron microscope (SEM) analysis. This study suggested the optimized crystallization parameters for the synthesis of the zeolitic materials with the CFA by the fusion/hydrothermal method.

中文翻译：

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粉煤灰熔融/水热法合成沸石材料结晶参数优化

摘要 使用熔融/水热法合成粉煤灰 (CFA) 沸石材料的过程包括各种结晶参数，如老化时间、结晶时间、结晶温度和 Na2CO3/CFA 比。当沸石材料由 CFA 合成时，在优化结晶条件（如 Na2CO3/CFA 比为 1.8，老化时间为 5 h）下，沸石材料的 XRD 峰与商业 Na-A 沸石的 XRD 峰几乎相同。室温，结晶时间为 5 h，结晶温度为 90 °C。通过 X 射线衍射 (XRD) 和扫描电子显微镜 (SEM) 分析，发现沸石材料与 Na-A 沸石的晶体结构和锋利立方体的形成有关。