两种稀土元素对纳米碳酸钙结晶的影响  

Effects of Two Rare Earth Elements on Crystallization of Nano Calcium Carbonate

作　　者：钱德全 徐大瑛 耿文娟 薛瑞 QIAN Dequan;XU Daying;GENG Wenjuan;XUE Rui(College of Chemistry and Chemical Engineering,Lanzhou City University,Provincial Key Laboratory of Gansu Higher Education for City Environmental Pollution Control,Lanzhou 730070,China)

机构地区：[1]兰州城市学院化学化工学院,城市环境污染控制甘肃省高校省级重点实验室,甘肃兰州730070

出　　处：《化学与生物工程》2021年第3期26-28,39,共4页Chemistry & Bioengineering

基　　金：国家自然科学基金项目(21765013)。

摘　　要：分别以三氯化镧、三氯化钕为晶型控制剂,采用复分解法制备了纳米碳酸钙,通过红外光谱仪(FTIR)、扫描电子显微镜(SEM)、X-射线衍射仪(XRD)等对其进行了表征,研究了两种稀土元素的加入对纳米碳酸钙结晶的影响。结果表明,三氯化镧、三氯化钕的加入对纳米碳酸钙结晶的影响较明显,出现了多种不同形状的微晶颗粒,晶型以方解石型和球霰石型为主。Using lanthanum trichloride and neodymium trichloride as crystal control agents,respectively,we prepared nano calcium carbonate by a double decomposition method,characterized the structure by infrared spectrometer(FTIR),scanning electron microscope(SEM),and X-ray diffractometry(XRD),and studied the effects of the addition of two rare earth elements on the crystallization of nano calcium carbonate.The results show that the addition of lanthanum trichloride and neodymium trichloride has a significant effect on the crystallization of nano calcium carbonate,and the nano calcium carbonate obtained is calcite type and aragonite type microcrystals with a variety of different shapes.

关 键 词：纳米碳酸钙 晶型控制 三氯化镧 三氯化钕 

分 类 号：TQ132.32[化学工程—无机化工]