太原理工大学学报2017，Vol.48Issue(5)：723-727,5.DOI:10.16355/j.cnki.issn1007-9432tyut.2017.05.004
NaA分子筛的制备及粒度调控
Synthesis of NaA Zeolite and Regulation of Its Grain Size
摘要
Abstract
In the absence of template agent,NaA zeolite was prepared by hydrothermal syn-thesis with Na2SiO3 · 9 H2O、NaAlO2 as silicon source and aluminum source,respectively.The influence of the parameters such as water content,crystallization temperature,crystallization time and aging time on the crystal size and distribution was investigated.The products were char-acterized by XRD and SEM.The results show that the crystal size decreased initially and then in-creased with decreasing water content,rising crystallization temperature narrowed the mean par-ticle size of crystal and then crystalline transformations occurred,longer aging time resulted in a narrower particle size distribution,while the particle size obtained in the case of different crystal-lization time was relatively uniform.The smallest particle was achieved with the size of 0.38μm when the water content was n(H2O):n(Na2O)=70,the crystallization temperature was 90 ℃, the crystallization time was 12 h and the aging time was 3 d.关键词
NaA分子筛/水热合成法/晶粒尺寸/粒度分布Key words
Zeolite NaA/hydrothermal synthesis/crystal size/crystal size distribution分类
化学化工引用本文复制引用
王秀红,王晓东,黄伟..NaA分子筛的制备及粒度调控[J].太原理工大学学报,2017,48(5):723-727,5.基金项目
国家自然科学基金资助项目(21176167) （21176167）
教育部科学技术研究重点资助项目(212021) （212021）
高等学校博士学科点专项科研基金资助项目(2011140212001) （2011140212001）
