天冬氨酸对碳酸钙形貌和晶型的控制  

Control of DL-Aspartic Acid on Morphology and Structure of Calcium Carbonate

作　　者：陈传宝[1] 张群[2] 方亮[1] 

机构地区：[1]安徽师范大学化学与材料科学学院,安徽芜湖241000 [2]安庆师范学院化学与化工学院,安徽安庆246011

出　　处：《安庆师范学院学报（自然科学版）》2008年第2期45-47,共3页Journal of Anqing Teachers College(Natural Science Edition)

基　　金：国家自然科学基金(20171001);安徽省教育厅自然科学基金(2005KJ369ZC)资助

摘　　要：用DL-天冬氨酸作为碳酸钙结晶的有效调控剂,对所得到的产物进行扫描电子显微镜(SEM),红外吸收光谱(FT-IR),X-射线粉末衍射仪(XRD),热重分析表征,结果显示,当DL-天冬氨酸的浓度为0.005 mol.L-1时,所得碳酸钙是方解石型,但当浓度增大到0.05或0.2 mol.L-1时,得到的却是方解石和球霰石的混合体系。这一结果表明,DL-天冬氨酸在碳酸钙的晶体生长过程中起着十分重要的影响。In this paper, DL-Aspartie Acid （DL-Asp） was used as effective modifier to mediate the crystallization of CaCO3. The obtained crystals were characterized by scanning electron microscopy （SEM）, Fourier transform infrared spectroscopy （FT-IR）, X-ray diffraction （XRD）, Thermogravimetric analysis. As the results have shown, when the concentration of DL-Asp was 0. 005 mol·L^-1, the CaCOa particles were calcite, while both calcite and spherical vaterire with various morphologies were produced with the 0. 05 mol·L^-1 or 0. 2 mol·L^-1. It indicated that DL-Asp acids played an important role in the process of crystal growth of CaCO3.

关 键 词：天冬氨酸 碳酸钙 晶体生长 形貌 

分 类 号：O614.231[理学—无机化学]