共沉淀法合成Mg-Al-类水滑石影响因素研究

J4 ›› 2011, Vol. 46 ›› Issue (3): 18-22.

共沉淀法合成Mg-Al-类水滑石影响因素研究

王冬青,李丽芳*,王建伟

山东农业大学化学与材料化学学院, 山东泰安 271018

收稿日期:2010-11-05 发布日期:2011-04-21
通讯作者: 李丽芳(1968- ), 女, 博士, 副教授, 研究方向为超细颗粒及水基农药制剂研究. Email:fangll@sdau.edu.cn
作者简介:王冬青(1985- ), 女, 硕士研究生, 研究方向为超细分散体系的制备与应用. Email:douchong-0920@163.com
基金资助:
山东省优秀中青年科学家科研奖励基金资助项目(2008BS07016)

Study of the effects on synthesis Mg-Al-hydrotalcite-like compounds

WANG Dong-qing, LI Li-fang*, WANG Jian-wei

College of Chemistry and Material Science, Shandong Agriculture University, Tai’an 271018, Shandong, China

Received:2010-11-05 Published:2011-04-21

摘要/Abstract

摘要：

混合共沉淀法制备类水滑石(HTlc)纳米粒子时,其粒径及粒径分布会受到多种因素的影响。本文采用正交设计法研究了Mg-Al-HTlc纳米粒子的合成,比较了胶溶时间、胶溶温度、碱用量及老化时间对晶胞参数、粒径及粒度分布的影响及作用。各因素对平均粒径影响顺序为:胶溶温度>老化时间>胶溶时间>碱用量。各因素对粒度分布影响顺序为:碱用量>胶溶温度>老化时间>胶溶时间。单分散HTlc纳米粒子最佳制备条件为:胶溶时间48h,胶溶温度100℃,碱用量nNH₃·H₂O／(2n(Mg²⁺ )+3n(Al³⁺ ))=1, 老化时间45min。

关键词: 类水滑石;合成;纳米粒子;正交设计

Abstract:

The size and size distribution will be affected by many factors in the process to synthesize Mg-Al-HTlc (hydrotalcite-like compounds, HTlc) nanoparticles using the mixed co-precipitation method. Orthogonal design was used in this study to synthesize Mg-Al-HTlc nanoparticles and to estimate the factors (such as peptizing time, peptizing temperature, aging time and alkali dosage) effect on the unit cell parameters, size and size distribution in the monodispersed Mg-Al-HTlc nanopartical preparation process. The result showed that the order of factors influencing HTlc mean size was: peptizing temperature> aging time> peptizing time> alkali dosage. The order of factors influencing HTlc size distribution was: alkali dosage> peptizing temperature> aging time> peptizing time. The optimal condition for preparing monodispersed HTlc was: peptizing time 48h, peptizing temperature 100℃, and alkali dosage nNH₃·H₂O／(2n(Mg²⁺ )+3n(Al³⁺ ))=1, aging time 45min.

Key words: hydrotalcite-like compounds; syntheses; nanoparticle; orthogonal design

王冬青,李丽芳*,王建伟. 共沉淀法合成Mg-Al-类水滑石影响因素研究[J]. J4, 2011, 46(3): 18-22.

WANG Dong-qing, LI Li-fang*, WANG Jian-wei. Study of the effects on synthesis Mg-Al-hydrotalcite-like compounds[J]. J4, 2011, 46(3): 18-22.

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