影响粉煤灰水热制备4A沸石的因素分析  

Influencing Factors for Hydrothermal Method Preparation of 4A Zeolite from Fly Ash

作　　者：徐岩[1] 徐德永[1] 秦华[1] 

机构地区：[1]黑龙江科技学院资源与环境工程学院,黑龙江哈尔滨150027

出　　处：《实验室研究与探索》2009年第11期53-56,共4页Research and Exploration In Laboratory

基　　金：黑龙江省教育厅科学技术研究项目(11511342)

摘　　要：以双鸭山煤矿电厂粉煤灰为原料,研究了在不同的碱度、液固比、晶化温度和胶凝温度条件下的水热法合成4A沸石的过程,并进行了实验结果和各种合成因素的分析,采用X射线衍射仪对合成的沸石样品进行了表征。实验结果分析表明,粉煤灰在低温活性区以800℃煅烧的粉煤灰活性表现最佳。在碱度3.5 mol/L、液固比2.0∶1、凝胶形成温度65℃、晶化温度90℃以及晶化时间7 h的实验条件下,采用粉煤灰合成了4A沸石。The experiments with hydrothermal method to synthesize 4A-type zeolite were carried on in different conditions of alkalinity, liquid-solid ratio, friction crystallization temperature and friction formation temperature gel. The experimental results and synthetical factors were analyzed and researched. The synthetical zeolites are characterized by X-ray diffraction（XRD）. The analysis shows that, in the active district of low temperature, the activity of activated fly ash calcined under 800℃ is best. In the conditions of alkalinity 3.5 mol/L, liquid/solid ratio 2.0： 1, temperature of gelatifieation 65℃ , temperature of crystallization 90℃ and time of crystallization 7 h, 4A-type zeolite can be synthesized from fly ash.

关 键 词：粉煤灰 4A沸石 水热法 

分 类 号：TQ424.25[化学工程]