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无机材料学报

无机材料学报

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微波场下纳米Mg-Al-LDHs及PO43-,P2O74-柱撑Mg-Al层状双氢氧化物的合成

张泽江1; 兰彬2; 冯良荣1; 吕绍洁1; 邱发礼1   

  1. 1.中国科学院成都有机化学研究所, 成都 610041; 2. 公安部四川消防研究所, 成都 611830
  • 收稿日期:2003-06-16 修回日期:2003-07-07 出版日期:2004-07-20 网络出版日期:2004-07-20

Syntheses of Nanocrystalline Mg-Al-LDHs and PO43-, P2O74- Anion-Pillared Layered Double Hydroxides under the Conditions of Microwave

ZHANG Ze-Jiang1; LAN Bin2; FENG Liang-Rong1; LU Shao-Jie1; QIU Fa-Li1   

  1. 1.Chengdu Institute of Organic Chemistry; Chinese Academy of Sciences; Chengdu 610041; China; 2.Fire Research Institute of Public Safety Ministry; Chengdu 611830; China
  • Received:2003-06-16 Revised:2003-07-07 Published:2004-07-20 Online:2004-07-20

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摘要： 用微波加热反应-变速滴加共沉淀法合成了[Mg-Al-CO3]纳米层状双氢氧化物,并以[Mg-Al-CO3]纳米层状双氢氧化物为前体,用微波加热反应-离子交换法制备了PO43-,P2O74-柱撑Mg-Al层状双氢氧化物。该法合成的[Mg-Al-CO3]纳米层状双氢氧化物的粒径约为10-40nm。讨论了微波和变速滴加碱液的速度对纳米层状双氢氧化物的合成的影响。用FT-IR、TEM与XRD对产物进行了表征,结果表明在微波加热反应的条件下可在短时间内用PO43-,P2O74-彻底交换CO32-。

关键词: 纳米, 离子交换, 微波, 层状双氢氧化物

Abstract: Nanocrystalline [Mg-Al-CO3] layered double hydroxides were prepared by using microwave irradiation and varied rate of dripping alkali. Then [Mg-Al-PO4] and [Mg-Al-P2O7] layered
double hydroxides were successfully synthesized by the direct reaction of free PO3-4 and P2O4-7 with [Mg-Al-CO3] layered double hydroxides precursor using microwave technique
and the anion-intercalation method. By using this method [Mg-Al-CO3] layered double hydroxides with a particle size of about 10nm to 40nm were produced. The effect of microwave and
the rate of dripping alkali on [Mg-Al-CO3] layered double hydroxides was discussed. And the samples thus obtained were characterized by FT-IR, TEM and XRD. The results show that the initial
interlayer carbonate ions can be completely replaced by PO3-4 and P2O4-7 under the controlled microwave conditions employed in a short time.

Key words: nanocrystalline, the anion-intercalation method, microwave, layered double hydroxides

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