氨基酸调控无水碳酸镁晶体结晶试验研究

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (8): 2904-2909.

氨基酸调控无水碳酸镁晶体结晶试验研究

崔万顺, 文伟翔, 闫平科, 高玉娟, 白阳

山东理工大学资源与环境工程学院,淄博 255000

收稿日期:2022-01-09 修回日期:2022-05-01 出版日期:2022-08-15 发布日期:2022-08-30
通讯作者: 闫平科,博士,教授。E-mail:yanpingke@126.com
作者简介:崔万顺(1996—),男,硕士研究生。主要从事无机粉体材料的研究。E-mail:15689061898@163.com
基金资助:
国家自然科学基金面上项目(51674137);河北省自然科学基金面上项目(E2019508097)

Experimental Study on Crystallization of Anhydrous Magnesium Carbonate Crystals Regulated by Amino Acids

CUI Wanshun, WEN Weixiang, YAN Pingke, GAO Yujuan, BAI Yang

School of Resources and Environmental Engineering, Shandong University of Technology, Zibo 255000, China

Received:2022-01-09 Revised:2022-05-01 Online:2022-08-15 Published:2022-08-30

摘要/Abstract

摘要： 无水碳酸镁晶体作为一种新型无机功能材料引起了研究者们的广泛关注。以氯化镁为原料,碳酸钠为沉淀剂,合成了无水碳酸镁晶体,再以甘氨酸、组氨酸、丙氨酸及L-天门冬氨酸四种不同种类氨基酸作为添加剂,调控其结晶的粒度及形貌。采用X射线衍射仪、扫描电子显微镜、激光粒度分析仪对合成产物进行表征,分析不同种类氨基酸对合成的无水碳酸镁晶体物相结构和形貌的影响。结果表明:在组氨酸调控下合成的无水碳酸镁结晶纯度高,生成的产物中n(Mg²⁺)∶n(CO^2-₃)为1∶0.94;L-天门冬氨酸调控合成的晶体纯度次之;甘氨酸和丙氨酸调控合成的晶体中掺杂大量碱式碳酸镁晶体。在组氨酸、L-天门冬氨酸、甘氨酸及丙氨酸四种氨基酸调控作用下,晶体结晶形貌依次呈凸面球三角形状、近球状、球状及不规则状,且无水碳酸镁晶体粒径分布均呈先上升后振荡下降最后小粒径拖尾的趋势。以上研究结果为无水碳酸镁晶体的仿生合成提供了参考。

关键词: 氨基酸, 官能团, 无水碳酸镁, 粒度分布, 水热合成, 微观结构

Abstract: Anhydrous magnesium carbonate crystal as a new inorganic functional material has attracted the attention of researchers. In this paper, anhydrous magnesium carbonate crystal was synthesized by using magnesium chloride as raw material and sodium carbonate as precipitant. And four different kinds of amino acids, named glycine, histidine, alanine, and L-aspartate, were used as additives to regulate the particle size and crystalline morphology of anhydrous magnesium carbonate crystals. The synthesized products were characterized by X-ray diffractometer, scanning electron microscope, and laser particle size analyzer, and the effects of different amino acids on the physical structure and morphology ofanhydrous magnesium carbonate powder were analyzed. The results show that the anhydrous magnesium carbonate regulated by histidine has highly degree of crystallinity, and the n(Mg²⁺)∶n(CO^2-₃) of the synthesized product is 1∶0.94. The purity of crystals regulated by L-aspartate is second. Partial magnesium carbonate hydroxides are grown in the crystals synthesized under the requlation of glycine and alanine. The crystalline morphologies of anhydrous magnesium carbonate crystals under the regulation of histidine, L-aspartate, glycine, and alanine are convex spherical triangular shape, ellipsoidal shape, spherical shape, and irregular shape, respectively. The particle size distribution of anhydrous magnesium carbonate crystals shows a trend of rising first and then oscillating down and trailing slightly particle size. These results provide reference to the bionic synthesis of anhydrous magnesium carbonate crystal.

Key words: amino acid, functional group, anhydrous magnesium carbonate, particle size distribution, hydrothermal synthesis, microstructure

中图分类号:

TQ132.2

崔万顺, 文伟翔, 闫平科, 高玉娟, 白阳. 氨基酸调控无水碳酸镁晶体结晶试验研究[J]. 硅酸盐通报, 2022, 41(8): 2904-2909.

CUI Wanshun, WEN Weixiang, YAN Pingke, GAO Yujuan, BAI Yang. Experimental Study on Crystallization of Anhydrous Magnesium Carbonate Crystals Regulated by Amino Acids[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(8): 2904-2909.

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