化工矿物与加工2025，Vol.54Issue(3)：1-9,9.DOI:10.16283/j.cnki.hgkwyjg.2025.03.001
无水乙醇辅助下制备无水碳酸镁晶体试验研究
Experimental study on the preparation of anhydrous magnesium carbonate crystal with the aid of anhydrous ethanol
摘要
Abstract
Anhydrous magnesium carbonate crystals,as a high value-added inorganic functional material,have attracted much attention in the industrial production field.This article used magnesite as raw material to prepare anhy-drous magnesium carbonate crystals with the assistance of anhydrous ethanol.A three factor four level orthogonal experiment was designed to determine the optimal experimental conditions.The product was characterized by particle size analysis,X-ray diffraction(XRD)analysis,scanning electron microscopy(SEM)analysis,and other methods to explore the influence of anhydrous ethanol on the composition and morphology of anhydrous magnesium carbonate crystals and their synthesis mechanism.The activation energy of the synthesis reaction was also calculated.The results show that under the conditions of hydrothermal temperature of 200℃,hydrothermal time of 12 h,and a volume ratio of anhydrous ethanol to heavy magnesium water of 1∶1,pure phase cubic anhydrous magnesium carbonate crystals with an average particle size of 18.74 μm and good dispersion are obtained.The activation energy of the synthesis reaction is 0.573 kJ/mol.Anhydrous ethanol promote the generation of MgCO3,reduce the surface free energy of the crystal,increased the reaction rate,and accelerate the phase transition process.关键词
菱镁矿/无水碳酸镁/无水乙醇/正交试验/粒度分析/相转化/合成反应Key words
magnesite/anhydrous magnesium carbonate/anhydrous ethanol/orthogonal test/granularity analysis/phase transformation/synthesis reaction分类
化学工程引用本文复制引用
李克卿,张志彬,李孟强,王余莲,李刚,孙浩然,张一帆,于航欢,胡彦,苏峻樟,韩会丽..无水乙醇辅助下制备无水碳酸镁晶体试验研究[J].化工矿物与加工,2025,54(3):1-9,9.基金项目
国家自然科学基金项目(52374271) （52374271）
辽宁省重点研发计划-应用基础研究项目(2022JH2/101300111) （2022JH2/101300111）
沈阳市科技局项目(22-322-3-03) （22-322-3-03）
沈阳市中青年科技创新人才支持计划(RC220104) （RC220104）
辽宁省菱镁矿高值利用工程研究中心基金项目(LMKK20240101) （LMKK20240101）
辽宁省教育厅科研项目(SYLUGXRC+12). （SYLUGXRC+12）
