在缓冲液中制备Mg_6Al2(OH)13-SO4-CO3-Br·5.5H_2O及其结构分析

吴健松; 魏文君; 蓝晓欣

doi:10.13568/j.cnki.651094.2019.01.007

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在缓冲液中制备Mg_6Al₂(OH)₁₃-SO₄-CO₃-Br·5.5H_2O及其结构分析

数理科学 | 更新时间：2026-01-21

- 在缓冲液中制备Mg_6Al₂(OH)₁₃-SO₄-CO₃-Br·5.5H_2O及其结构分析
- 在缓冲液中制备Mg_6Al₂(OH)₁₃-SO₄-CO₃-Br·5.5H_2O及其结构分析
- 新疆大学学报（自然科学版中英文） 2019年36卷第1期页码：44-48
- 作者机构：
  
  1. 岭南师范学院化学化工学院
  2. 岭南师范学院生物科学与技术学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金(51272207);广东省科技计划(2013B021100019);岭南师范学院博士专项
- DOI：10.13568/j.cnki.651094.2019.01.007
  中图分类号： O784
- 纸质出版：2019
- 稿件说明：
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[1]吴健松,魏文君,蓝晓欣.在缓冲液中制备Mg_6Al_2(OH)_(13)-SO_4-CO_3-Br·5.5H_2O及其结构分析[J],2019,36(01):44-48.
[1]吴健松,魏文君,蓝晓欣.在缓冲液中制备Mg_6Al_2(OH)_(13)-SO_4-CO_3-Br·5.5H_2O及其结构分析[J],2019,36(01):44-48. DOI： 10.13568/j.cnki.651094.2019.01.007.

DOI：10.13568/j.cnki.651094.2019.01.007.

摘要

以MgBr2·6H_2O、Al2(SO4)3·18H_2O为原料

Na_2CO3-NaHCO3缓冲对为沉淀剂

合成了优质的Mg_6Al2(OH)13-SO4-CO3-Br·5.5H_2O晶须.样品用XRD、SEM、N2吸附-解吸进行了物相、粒度、晶体形貌结构分析.分析了缓冲对体积分数对LDH-SO4-CO3-Br晶须晶形及晶胞参数的影响.结果发现

缓冲对用量在体系中含量的大小对其规整性、板层结构有较大的影响.当缓冲液用量为40%

反应温度T=75?C

反应时间t=212h时可获得晶形好、板层结构显著、规整性好、分散性好的优质LDH-SO4-CO3-Br晶须.

Abstract

High-quality Mg6 Al2(OH)13-SO4-CO3-Br ·5.5 H2 O whiskers were synthesized via liquid precipitation method using MgBr2 · 6 H2 O and Al(NO)3 · 6 H2 O as raw materials and Na2 CO3-NaHCO3 buffer solution as precipitant. The influence of buffer solution concentration on the characteristics of the samples were investigated. The as-grown whiskers were characterized by X-ray diffraction

scan electron microscopy and elemental analysis. The results show that the buffer solution concentration in the system had a greater impact on whisker defined shape and crystal cell parameter LDH-Br whisker with well-defined shape

distinct intercalated structure

regular quality

and well-dispersing capability could be obtained under the following conditions: buffer solution volume ratio of 40%

reaction temperature of 75 °C

and reaction time of 212 h.The whisker obtained was well-crystallized and had the morphology of homogeneous and fiber bar.

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