高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (6): 831.

• 论文 • 上一篇    下一篇

磷酸锡盐的水热合成及其表征

徐跃华, 冯守华, 庞文琴   

  1. 吉林大学化学系无机水热合成开放实验室, 长春, 130023
  • 收稿日期:1994-08-22 修回日期:1995-03-30 出版日期:1995-06-24 发布日期:1995-06-24
  • 通讯作者: 徐跃华,男,28岁,博士研究生.
  • 作者简介:徐跃华,男,28岁,博士研究生.
  • 基金资助:

    国家自然科学基金

Hydrothermal Synthesis and Characterization of MSn2(PO4)3(M=Na,K,NH4)

XU Yue-Hua, FENG Shou-Hua, PANG Wen-Qin   

  1. Department of Chemistry, Key Laboratory of Inorganic Hydrothermal Synthesis, Jilin Unitversity, Changchun l30023
  • Received:1994-08-22 Revised:1995-03-30 Online:1995-06-24 Published:1995-06-24

PDF (PC)

被引次数

10

摘要： 用水热法合成出系列化合物MSn2(PO4)3(M=Na,K,NH4).该化合物具有NASICON型三维骨架结构,测得其晶胞参数为:(l)NaSn2(PO4)3,a=0.8526(2)nm,c=2.247(4)nm;(2)KSn2(PO4)3,a=0.8366(1)nm,c=2.356(4)nm;(3)NH4Sn2(PO4)3,a=0.8330(l)nm,c=2.390(5)nm.热分析结果表明,在较低温度下水热晶化出的钠和钾磷酸锡盐可稳定存在,在1100℃高温下不分解,而NH4Sn2(PO4)3在769℃以上发生分解,测定了产物在室温下的电导率.

关键词: 水热合成, 磷酸盐, 结构与性质

Abstract: Hydrothermal synthesis of MSn2(PO4)3(M=Na, K, NH4)compounds has been carried out at lower temperature,and their pure phases were easily obtained by hydrothermal crystallization. The compounds crystallize in rho. mbohedral form with a=0.8526(2)nm and c=2.247(4) nm for NaSn2(PO4)3, a=0.8366(1) nm and c=2.356(4) nm for KSn2(PO4)3, a=0.8330(l) nm and c=2.390(5)nm for NH4Sn2(PO4)3.The results of thermal analysis show that for Na and Kanalogues neither decomposition nor condensation took place up to ll00℃, whereas NH4Sn2(PO4)3could exist stably below 769℃,above this temperature it could be transformed to HSn2(PO4)3LiSn2(PO4)3and HSn2(PO4)3could not be prepared directly by hydrothermal method. Apossible explanation for this is given.

Key words: Hydrothermal synthesis, Phosphates, Structure and property

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