均匀沉淀法制备锡酸锌与锡酸锌包覆纳米碳酸钙的研究  

Preparation of zinc stannate and zinc stannate coated nano-sized calcium carbonate by homogeneous precipitation method

作　　者：徐建中[1] 刘建州[1] 谢吉星[1] 屈红强[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《无机盐工业》2009年第5期28-30,共3页Inorganic Chemicals Industry

摘　　要：以均匀沉淀法制备了羟基锡酸锌和羟基锡酸锌包覆纳米碳酸钙,利用超声分散和共沸蒸馏对所得产物处理后,经高温煅烧得锡酸锌包覆纳米碳酸钙粉体。采用XRD,TG-DTA对羟基锡酸锌及羟基锡酸锌包覆纳米碳酸钙的煅烧产物进行分析,确定合成锡酸锌和锡酸锌包覆纳米碳酸钙的最佳煅烧温度为500℃,最佳煅烧时间为3h。X射线光电子能谱(XPS)分析表明,锡酸锌已包覆在纳米碳酸钙表面,透射电子显微镜(TEM)结果表明,锡酸锌包覆纳米碳酸钙的粒径在40～60nm。Zinc hydroxystannate and zinc hydroxystannate coated nano-sized calcium carbonate were synthesized as precursors by homogeneous precipitation method. Then zinc stannate coated nano-sized calcium carbonate was obtained by calcining the precursors with ultrasonic and azeotropic techniques. The calcined products of zinc hydroxystannate and zinc hydroxystannate coated nano-sized calcium carbonate were characterized by XRD and TG/DTA. Optimum condition of calcining for preparation of zinc stannate and zinc stannate coated nano-sized calcium carbonate was under 500 ℃ for 3 h. XPS results showed that zinc stannate had been coated on nano-sized calcium carbonate surface. And TEM results showed that the size of zinc stannate coated nano-sized calcium carbonate was about 40 - 60 nm.

关 键 词：羟基锡酸锌 锡酸锌 纳米碳酸钙 均匀沉淀法 

分 类 号：TQ132.32[化学工程—无机化工]