碳酸镁晶体演变过程研究(Ⅱ)  

Process of Magnesium Carbonate Crystal Evolution(Ⅱ)

作　　者：高玉娟[1] 夏雪[1,2] 闫平科[1] 费野 赵永帅[1] 张旭[1] 

机构地区：[1]辽宁工程技术大学矿业学院,阜新123000 [2]东北煤田地质局一0七勘探队,阜新123000

出　　处：《硅酸盐通报》2016年第5期1470-1474,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51004064,51204091);辽宁省高等学校优秀人才资助计划项目(LJQ2014035)

摘　　要：本文采用低温水溶液法制备出棒状三水碳酸镁晶体,通过对制备产品进行恒温水浴加热,研究制备产物的物相及形貌的演变过程,发现晶体物相由三水碳酸镁向四水碱式碳酸镁转变,同时,晶体形貌经历了棒状—片状的变化过程。在此基础上,进一步从晶体结构、晶体稳定性及能量角度分别分析了三水碳酸镁晶体向四水碱式碳酸镁晶体演变的本质。Low temperature liquid phase method was adopted to synthetize rod nesquehonite crystal.Through being heated in constant temperature water bath,the process of phase and morphology evolution of the product was researched. And crystal transformation from nesquehonite to magnesium carbonate hydroxide tetrahydrate was discovered. Meanwhile, crystal morphology has experienced the change process of the rod to flake shaped. Based on this,essence of crystal transformation from nesquehonite to magnesium carbonate hydroxide tetrahydrate was analyzed further from the point of crystal structure,crystal stability and energy.

关 键 词：三水碳酸镁 四水碱式碳酸镁 晶体微观结构 演变 

分 类 号：TQ132[化学工程—无机化工]