文献类型：期刊文献

中文题名：共沉淀法低温合成β-CaSiO_3纳米粉体

英文题名：Low Temperature Preparation of β-CaSiO_3 Nanopowder viaCoprecipitation Process

作者：刘孟彬[1];李蔚[1];杨爱霞[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2011

卷号：37

期号：3

起止页码：315

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：共沉淀法;β-CaSiO3;纳米粉体

外文关键词：coprecipitation process; β-CaSiO3; nanopowders

摘要：以正硅酸乙酯和硝酸钙为原料,采用共沉淀法低温制备了β-CaSiO3纳米粉体。系统讨论了沉淀剂、滴加方式、合成体系温度及溶剂等因素对粉体合成的影响;采用XRD,SEM和BET等手段对β-CaSiO3粉体的物相、颗粒的形貌及粉体的比表面积进行了表征。结果表明:在25℃下,用NaOH溶液做沉淀剂,乙醇做溶剂,采用逐滴加入NaOH溶液的方式合成的沉淀前驱体比较均匀,该沉淀前驱体经过680℃煅烧便可以得到纯的β-CaSiO3;扫描照片显示,在700℃下可得到β-CaSiO3纳米颗粒结晶完整棒状粉体。
β-CaSiO3 powders were synthesized through a chemical coprecipitation process by using Ca（NO3）2·4H2O and Si（OC2H5）4 as raw materials.The effects of the precipitating agent,dropping way of precipitant,temperature and solvent on the preparation of β-CaSiO3 powders were investigated systematically.The morphology and specific surface area of β-CaSiO3 powders were characterized by means of XRD,SEM and BET.The results showed that well-distributed intermediate products were obtained by using NaOH as precipitant,ethanol as solvent and adding NaOH solution drop by drop at 25 °C.Pure β-CaSiO3 was obtained by heating the intermediate product at 680 °C for 2 h.Rod-like β-CaSiO3 crystals were obtained at 700 °C as observed by SEM.