链状纳米碳酸钙合成  

Synthesis of Chain-shaped Nano-grade Calcium Carbonate

作　　者：秦勇利[1] 吴秋芳[1] 李福清[1] 陈雪梅[1] 陈建定[1] 

机构地区：[1]华东理工大学国家超细粉末工程研究中心,上海200237

出　　处：《非金属矿》2004年第5期9-11,共3页Non-Metallic Mines

摘　　要：采用以CaO和CO2 为原料的碳化法 ,在晶形控制剂———柠檬酸盐存在的条件下 ,制备出纳米链状碳酸钙 ,链直径约 10nm ,长径比大 ,粒径分布均匀 ,分散性好。同时利用TEM和XRD分析手段研究了反应温度、晶形控制剂量。Carbonation technique in which CaO and CO 2 is adopted as raw material was used to synthesize chain-like nanometer calcium carbonate with citrates as additives. The synthesized calcium carbonate has great aspect ratio(>5)and good dispersibility and its diameter is about 10nm.TEM and XRD was used to study the effect of temperature (10～80℃), amount of additives(1%～15%) and agitation rate (300～1500r/min)on the morphology and dispersibility of the calcium carbonate.

关 键 词：链状 合成 晶形控制剂 柠檬酸盐 纳米碳酸钙 

分 类 号：TB383[一般工业技术—材料科学与工程]