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| 利用粉煤灰合成4A沸石分子筛的研究 | |
| 引用本文： | 崔杏雨,张徐宁,陈树伟,范彬彬,马静红,李瑞丰.利用粉煤灰合成4A沸石分子筛的研究[J].太原理工大学学报,2012,43(5):539-543. |
| 作者姓名： | 崔杏雨 张徐宁 陈树伟 范彬彬 马静红 李瑞丰 |
| 作者单位： | 1. 太原理工大学精细化工研究所,太原,030024 2. 太原理工大学化学化工学院,太原,030024 3. 太原理工大学精细化工研究所,太原030024;太原理工大学化学化工学院,太原030024 |
| 基金项目： | 山西省自然科学基金资助项目(2012011005-6);山西省自然科学基金资助项目(2007011032);太原市技术创新计划资助项目(0802015) |
| 摘 要： | 以粉煤灰(coal fly ash,CFA)为原料,采用碱熔融-水热法合成4A沸石分子筛,系统研究了碱熔温度、碱度、陈化时间、晶化温度和晶化时间对合成4A分子筛的影响。利用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对样品的结构、组成和形貌进行了表征。研究结果表明,无需外加硅铝组分,通过控制合成条件,可对产品结构进行调控。在粉煤灰与氢氧化钠质量比为1∶1.2,碱熔温度850℃,NaOH浓度2.14mol/L,陈化时间6h,晶化温度90℃,晶化时间12h的条件下,用粉煤灰成功合成了晶相单一且晶型完整的4A沸石分子筛。 |
| 关 键 词： | 粉煤灰 4A分子筛 碱熔融法 水热合成法 |
Synthesis of Zeolite 4A from Coal Fly Ash |
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| CUI Xingyu , ZHANG Xuning , CHEN Shuwei , FAN Binbin , MA Jinghong , LI Ruifeng.Synthesis of Zeolite 4A from Coal Fly Ash[J].Journal of Taiyuan University of Technology,2012,43(5):539-543. | |
| Authors: | CUI Xingyu ZHANG Xuning CHEN Shuwei FAN Binbin MA Jinghong LI Ruifeng |
| Institution: | a,b(a.Institute of Special Chemicals; b.College of Chemistry and Chemical Engineering,TUT,Taiyuan 030024,China) |
| Abstract: | Zeolite 4A was synthesized using coal fly ash(CFA) as raw material by fusion-hydrothermal process,i.e.fusion methods using NaOH followed by a hydrothermal reaction.The effects of synthesis conditions such as NaOH fusion temperature,NaOH concentration,aging time,operating temperature and hydrothermal reaction time,were investigated.Characterization of samples was carried out by XRD,SEM and N2-adsorption.The results show that zeolite 4A with good crystallinity and appearance was prepared from CFA by controlling synthesis conditions without the addition of a silicon or aluminium source.The optimal synthesis conditions for zeolite 4A were found to be as follows: m(NaOH)/m(CFA)=1.2,fusion temperature 850℃,NaOH concentration 2.14 mol/L,aging time 6 h,reaction temperature 90℃ and reaction time 12 h. |
| Keywords: | coal fly ash zeolite 4A fusion method hydrothermal method |
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