高级检索
无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

新型特效Na离子吸附剂Li1+xAlxTi2-x(PO4)3的制备和性能研究

孙建之1,2, 邓小川1, 宋士涛1,2, 李法强1, 马培华1   

  1. 1. 中国科学科院青海盐湖研究所, 西宁 810008; 2. 中国科学院研究生院, 北京 100039
  • 收稿日期:2005-01-06 修回日期:2005-04-04 出版日期:2006-01-20 网络出版日期:2006-01-20

Preparation and Properties of Novel Na Specific Adsorbent Li1+xAlxTi2-x(PO4)3

SUN Jian-Zhi1,2, DENG Xiao-Chuan1, SONG Shi-Tao1,2, LI Fa-Qiang1, MA Pei-Hua1   

  1. 1. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China
  • Received:2005-01-06 Revised:2005-04-04 Published:2006-01-20 Online:2006-01-20

PDF (PC)

1377

摘要： 采用高温固相法合成了新型特效Na离子吸附剂Li1+xAlxTi2-x(PO4)3. 通过对不同条件下合成的样品XRD、SEM及其吸附性能的研究表明, 少量Al的加入未影响到LiTi2(PO4)3的晶体结构, 但使Li1+xAlxTi2-x(PO4)3对Na离子产生了特效吸附作用. 当x=0.4时, 在pH值为10.0～11.0条件下, Li1+xAlxTi2-x(PO4)3的吸附容量达到11.76mg/g. 另外, 本文对材料的激光拉曼光谱和红外光谱进行了研究和指认.

关键词: 吸附剂, 含锂磷酸盐, 制备, 固相反应

Abstract: A novel Na specific kind of adsorbent Li1+xAlxTi2-x(PO4)3 was synthesized by the high temperature solid state reaction method. The samples were characterized by
X-ray diffraction (XRD) and scanning electron microscope(SEM), and their adsorption performances were investigated. The results indicate that the
low concentration (x<0.6) Al dopant does not affect the structure of the material but makes it can selectively adsorb sodium. The results show that
its exchange capacity is very high, even reach 11.76mg/g, under x=0.4, pH=10.0～11.0. In addition, Raman and FT-IR spectroscopic studies for
these materials were carried out and the vibrational bands were assigned.

Key words: adsorbent, Li-contained phosphates, preparation, solid state reaction

中图分类号: