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人工晶体学报 ›› 2017, Vol. 46 ›› Issue (9): 1703-1708.

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L-天门冬氨酸对三水碳酸镁晶体合成的影响研究

闫平科;白扬;孙得智;魏浩然;高玉娟;张旭   

  1. 辽宁工程技术大学矿业学院,阜新,123000
  • 出版日期:2017-09-15 发布日期:2021-01-20
  • 基金资助:
    国家自然科学基金(5167040842,51674137,51474121)

Effect of L-Aspartic Acid on the Crystallization of Magnesium Sulfate

YAN Ping-ke;BAI Yang;SUN De-zhi;WEI Hao-ran;GAO Yu-juan;ZHANG Xu   

  • Online:2017-09-15 Published:2021-01-20

摘要: 依据仿生合成的原理,选择无水MgCl2和无水Na2CO3作为反应原料,通过L-天门冬氨酸和五种无机表面活性剂分别对晶体生长进行调控,应用XRD、SEM对晶体的物相组成以及形貌结构进行表征.试验结果表明当表面活性剂为L-天门冬氨酸时,晶体生长效果最佳.又通过以L-天门冬氨酸添加量和体系pH值为参数变量进行研究,结果表明L-天门冬氨酸质量分数为0.15;,体系pH为9.5为最佳条件,有毫米级束状三水碳酸镁晶体的生成,并对L-天门冬氨酸在仿生合成三水碳酸镁过程中的作用机理进行了初步探讨.

关键词: 仿生合成;三水碳酸镁;表面活性剂;L-天门冬氨酸

Abstract: Based on the principle of biomimetic synthesis , anhydrous MgCl 2 and anhydrous Na 2 CO3 were selected as the reaction materials .The growth of crystals was controlled by L-aspartic acid and five inorganic surfactants respectively . XRD、SEM were used to analyze the phase Composition and morphology of the structure .The results show that when the surfactant is L-aspartic acid , the crystal growth is the best .The results show that when the mass fraction of L-aspartic acid is 0 .15;and the pH is 9.5, crystallization of magnesium sulfate with millimeter is formated .The formation mechanism of L-aspartic acid crystals in the process of bionic synthesis of magnesium carbonate was discussed .

Key words: Based on the principle of biomimetic synthesis , anhydrous MgCl 2 and anhydrous Na 2 CO3 were selected as the reaction materials .The growth of crystals was controlled by L-aspartic acid and five inorganic surfactants respectively . XRD、SEM were used to analyze the phase Composition and morphology of the structure .The results show that when the surfactant is L-aspartic acid , the crystal growth is the best .The results show that when the mass fraction of L-aspartic acid is 0 .15;and the pH is 9.5, crystallization of magnesium sulfate with millimeter is formated .The formation mechanism of L-aspartic acid crystals in the process of bionic synthesis of magnesium carbonate was discussed .

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