本文選題：碳酸鈣　切入點：晶體形貌　出處：《人工晶體學報》2016年07期 　論文類型：期刊論文

【摘要】：利用碳酸氫鈣水熱分解制備了具有不同形貌和晶相的碳酸鈣。在水熱情況下,得到了多種形貌的方解石和霰石碳酸鈣,研究了碳酸氫鈣濃度、添加劑氯化鎂濃度、反應時間和溫度等對碳酸鈣形貌和晶相的影響。以X射線衍射(XRD)和掃描電鏡(SEM)對制備的碳酸鈣進行了表征。研究發(fā)現(xiàn),水熱條件對碳酸鈣形貌和晶相的形成以及演化過程有重要影響。水熱條件下發(fā)現(xiàn)了穩(wěn)定的碳酸鈣晶相向亞穩(wěn)定相轉化的反常相變,對相關的形成及轉化機理進行了相應的闡述。
[Abstract]:Calcium carbonate with different morphologies and crystalline phases was prepared by hydrothermal decomposition of calcium bicarbonate. Calcite and aragonite calcium carbonate with various morphologies were obtained under hydrothermal conditions. The concentration of calcium bicarbonate and the additive magnesium chloride were studied. The effects of reaction time and temperature on the morphology and crystal phase of calcium carbonate were studied. The prepared calcium carbonate was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Hydrothermal conditions have an important influence on the morphology of calcium carbonate and the formation and evolution of crystalline phase. The abnormal phase transition from stable calcium carbonate to metastable phase has been found under hydrothermal conditions, and the related formation and transformation mechanism have been explained accordingly.
【作者單位】： 河南師范大學化學化工學院;
【基金】：河南省高等學校重點科研項目基金(15A150058) 國家自然科學基金(21303044,21303043)
【分類號】：TQ132.32

【相似文獻】

相關期刊論文 前5條

1 李國棟;水熱條件下化學激發(fā)低等級粉煤灰的研究[J];粉煤灰;2003年03期

2 吳興才;由稻殼提取高純SiO_2水熱條件的研究[J];硅酸鹽通報;1996年04期

3 胡秀蘭,柳澤和道,恩田步武,h斗己貧，

本文編號：1621964