化工进展

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水羟硅钠石的制备与表征

戈明亮,陈萌   

  1. 华南理工大学聚合物成型加工工程教育部重点实验室,聚合物新型成型装备国家工程研究中心,广东 广州 510640
  • 出版日期:2014-12-05 发布日期:2014-12-05

Preparation and characterization of kenyaite

GE Mingliang,CHEN Meng   

  1. Key Laboratory of Polyemer Processing Engineering of Ministry of Education,National Engineering Research Center of Novel Equipment for Polymer Processing,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Online:2014-12-05 Published:2014-12-05

摘要: 水羟硅钠石(kenyaite)以其良好的离子交换性、吸附性和热稳定性而被广泛应用于催化和吸附等领域。本文以高纯度且价格低廉的沉淀白炭黑为硅源、以碳酸钠(分析纯)和氢氧化钠(分析纯)为碱源,水热法制备了高纯度的单一晶相的水羟硅钠石,考察了反应时间和反应温度对制备的影响。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱仪(IR)、X射线荧光光谱仪(XRF)和同步热分析仪等对样品进行了测试表征。实验结果表明,温度是影响kenyaite制备的主要因素,单一晶相水羟硅钠石的最佳晶化合成条件为晶化温度为180℃,晶化时间为24h,所制备的水羟硅钠石形态为玫瑰花形且其热稳定性在350℃以下。

关键词: 水羟硅钠石, 水热合成, 表征, 麦羟硅钠石, 水羟硅钠石, 水热合成, 表征, 麦羟硅钠石

Abstract: Kenyaite was widely used in catalysis and adsorption due to its catalytic,adsorption and ion-exchange properties. The kenyaite as a single phase was successfully prepared by hydrothermal synthesis method,the silicon source and the alkali source were precipitated silica with high purity and low prices,sodium carbonate (AR),and sodium hydroxide (AR) respectively. The influence of key reaction parameters,including reaction time and temperature,were studied. The resultant crystals were characterized by XRD,SEM,IR,XRF and Simultaneous thermal analyzer. Results showed that the temperature is a major factor affecting kenyaite preparation and the best crystallized conditions for perfect kenyaite is achieved at crystallization temperature of 170℃ and crystallization time of 24h. The as-synthesized magadiite has a rosette like morphology and has high stability under the temperature of 250℃.

Key words: kenyaite, hydrothermal synthesis, characterization, magadiite, kenyaite, hydrothermal synthesis, characterization, magadiite

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