碳酸镁晶须的制备、表征与分析方法  

The Preparation,Characterization and Analysis Method Study of Magnesium Carbonate

作　　者：邵明浩[1] 史永刚[1] 胡泽善[1] 

机构地区：[1]后勤工程学院军事油料应用与管理工程系,重庆400016

出　　处：《后勤工程学院学报》2008年第1期37-40,共4页Journal of Logistical Engineering University

摘　　要：摘要采用溶液法在MgCl2-Na2CO3-NaHCO3溶液中制备出了碳酸镁晶须，分析了pH值对晶须生长的影响，运用热重分析和XRD对晶须形貌和晶相结构进行了表征，建立了简便快速的化学分析方法对晶须的化学组成进行了分析。结果表明：pH值在9．5以下制得的碳酸镁晶须的光滑性、长径比最好，晶须长约100μm，直径10～20μm，长径比在5—10。反应中碳酸氢钠不消耗，可通过连续添加碳酸钠制备碳酸镁晶须。所制得的碳酸镁晶须化学式为MgCO3·H2O。MgCO3 whisker was prepared with MgCl2 - NaCO3 - NaHCO3. The effect of pH on the growth of whisker was analyzed. The morphology and structure of the whisker were characterized using thermal weight analysis （TG） and X-ray diffraction（XRD）. A simple and rapid chemical analysis method was designed. Chemical composition of the whisker was analysized. The results indicated that the pH lower than 9.5 can give smooth whisker product with 5 - 10 in aspect ratio and about 100 μm in length as well as 10 -20 μm in diameter. The whisker possesses a chemical composition of MgCO32· H2O

关 键 词：碳酸镁 晶须 制备 表征 分析方法 

分 类 号：O784[理学—晶体学]