| 高硅铝比钾离子筛的合成及其对K+的交换性能 |
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| 引用本文： | 张运秋,袁俊生,付云朋,侯进,闫圣娟,高旭俊,朱孔秀.高硅铝比钾离子筛的合成及其对K+的交换性能[J].硅酸盐通报,2011,30(4):880-886. |
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| 作者姓名： | 张运秋 袁俊生 付云朋 侯进 闫圣娟 高旭俊 朱孔秀 |
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| 作者单位： | 中国海洋大学海洋化学理论与工程技术教育部重点实验室,青岛,266100;河北工业大学教育部海水利用技术工程研究中心,天津,300130 |
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| 基金项目： | 国家“十一五”科技支撑重大项目课题(2006BAB03A10); 山东省自然科学基金(2009ZRB019VB); 中央高校基本科研业务费专项资金(201013013)资助项目 |
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| 摘 要： | 以NaA1O2、水玻璃为原料,KOH为碱源,利用水热法合成了高硅铝比钾离子筛.考察了硅铝比、碱度、模板剂、晶化温度和晶化时间对钾离子筛晶相结构、产率和交换容量的影响,通过X射线衍射、化学组成分析、扫描电镜、热重差热分析、Fourier红外光谱对样品进行了表征.结果表明:以四丁基溴化铵为模板剂,物质的量比为6.68K2O:19.3SiO2:1Al2O3:624H2O,120℃条件下合成12 h,获得的高硅铝比钾离子筛为钾型钙十字沸石,化学组成为Si21Al5.1K2.4Na2O55·8H2O；离子筛对纯钾溶液和海水中钾离子的交换量分别达123·22 mg/g和56.96 mg/g,对K+/Na+的选择性系数为95.46,可用于从海水中选择性分离钾盐.
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| 关 键 词： | 高硅铝比 钾离子筛 水热合成 离子交换容量 选择性 |
Synthesis of High SiO_2/Al_2O_3 Ion-sieve for Potassium and Its Exchange Capability to K~+ |
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| ZHANG Yun-qiu,YUAN Jun-sheng,FU Yun-peng,HOU Jin,YAN Sheng-juan,GAO Xu-jun,ZHU Kong-xiu.Synthesis of High SiO_2/Al_2O_3 Ion-sieve for Potassium and Its Exchange Capability to K~+[J].Bulletin of the Chinese Ceramic Society,2011,30(4):880-886. |
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| Authors: | ZHANG Yun-qiu YUAN Jun-sheng FU Yun-peng HOU Jin YAN Sheng-juan GAO Xu-jun ZHU Kong-xiu |
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| Affiliation: | ZHANG Yun-qiu1,YUAN Jun-sheng2,FU Yun-peng1,HOU Jin1,YAN Sheng-juan1,GAO Xu-jun1,ZHU Kong-xiu1 (1.Key Laboratory of Marine Chemistry Theory and Technology of Ministry of Education,Ocean University of China,Qingdao 266100,China,2.Engineering Research Center of Seawater Utilization Technology of Ministry of Education,Hebei University of Technology,Tianjin 300130,China) |
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| Abstract: | Using NaAlO2 and solbule glass as raw materials,KOH as the alkali source,the high SiO2/Al2O3 ion-sieve was prepared by hydrothermal method.The effects of SiO2/Al2O3,alkalinity,template agents,crystallization temperature and crystallization time on the crystalline structure of ion sieve,yield and exchange capacity were investigated.The samples was characterized by X-ray diffraction,chemical composition analysis,scanning electron microscopy,thermogravimetry-differential thermal analysis,and Fourier transform ... |
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| Keywords: | high SiO2/Al2O3 ratio ion-sieve for potassium hydrothermal synthesis ion-exchange capacity selectivity |
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