碱活化条件对粉煤灰合成不同类型沸石的影响

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碱活化条件对粉煤灰合成不同类型沸石的影响

马明燕¹，张东丽¹，王玉洁²，胡大强¹，朱怀志¹,蒋引珊¹

1.吉林大学材料科学与工程学院,长春 130026；2.吉林大学测试科学研究中心，长春 130026

收稿日期:2005-11-14 修回日期:1900-01-01 出版日期:2006-07-26 发布日期:2006-07-26
通讯作者: 蒋引珊

Influence of Alkali’s Activation on the Types of Zeolite Synthesized from Fly Ash

MA Ming-yan¹, ZHANG Dong-li¹, WANG Yu-jie²,HU Da-qiang¹, ZHU Huai-zhi¹, JIANG Yin-shan¹

1.College of Material Science and Engineering，Changchun 130026，China；2.The Center of Test and Science Experiment, Jilin University, Changchun 130026, China

Received:2005-11-14 Revised:1900-01-01 Online:2006-07-26 Published:2006-07-26
Contact: JIANG Yin-shan

摘要/Abstract

摘要： 用高硅铝比粉煤灰水热合成Y型、P型和HS型沸石。讨论了碱活化粉煤灰的条件，包括焙烧方法、碱灰比和碱度对合成产物的影响。XRD分析表明：碱活化条件将直接影响沸石的晶型、晶粒尺寸和相对含量。采用620℃低温、两次短时间焙烧工艺明显地改善了活化效果。研究同时发现，低碱灰比和碱度条件下生成P型沸石；高碱灰比和碱度条件下生成HS沸石；Y型沸石的生成条件介于二者之间。合成产物纯度高,结晶好,具有高的阳离子交换容量。

关键词: 粉煤灰, 沸石, 碱活化, 晶粒尺寸, 阳离子交换容量

Abstract: Zeolite Y, P and HS were synthesized hydrothermally from flyash which has a higher SiO₂/Al₂O₃ ratio. The influence of alkali’s activation conditions, including baking method, alkalinity and NaOH/flyash mass ratio on synthetic zeolite was investigated. XRD analysis shows that the type, granularity and relative content of synthetic zeolite were affected by these factors. Baking in a short time twice at 620℃ can improve activation effect. And zeolite P was synthesized in lower alkalinity and NaOH/flyash mass ratio condition, while zeolite HS was synthesized in higher alkalinity and NaOH/flyash mass ratio condition. The synthetic condition of zeolite Y was between them. The synthetic products have high crystallinity, purity and cation exchange capability.

Key words: fly-ash, zeolite, alkali activation, granularity, cation exchange capability

中图分类号:

P619.217

马明燕，张东丽，王玉洁，胡大强，朱怀志,蒋引珊. 碱活化条件对粉煤灰合成不同类型沸石的影响[J]. J4, 2006, 36(04): 663-667.

MA Ming-yan, ZHANG Dong-li, WANG Yu-jie,HU Da-qiang, ZHU Huai-zhi, JIANG Yin-shan. Influence of Alkali’s Activation on the Types of Zeolite Synthesized from Fly Ash[J]. J4, 2006, 36(04): 663-667.

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