水热时间对中空球形薄水铝石微观结构的影响  

Effect of hydrothermal treatment time on microstructure of hollow sphere boehmite

作　　者：王晶[1] 李媛媛[1] 种丽娟[1] 刘岩[1] 

机构地区：[1]大连交通大学辽宁省无机超细粉体制备及应用重点实验室,辽宁大连116028

出　　处：《化工学报》2011年第7期2075-2079,共5页CIESC Journal

基　　金：国家自然科学基金项目(50974026);辽宁省教育厅计划项目(2008S035)~~

摘　　要：引言目前特殊形貌微纳米材料成为材料制备领域的研究热点,主要是由于微纳米材料的性质不但取决于其化学成分和组成,而且其形貌、尺寸和晶相结构等都有重大影响[1-2]。随着人们对特殊形貌微纳米材料关注度的提升,各种形貌微纳米材料已见诸报道,如花状FeO[3],海胆状MnO[4]、By using aluminum sulfate as precursor and urea as precipitator,hollow sphere boehmite was synthesized by hydrothermal treatment at 140℃ for 24 h.The time effect on the as-synthesized product was studied by XRD,SEM and TG.The results showed that with increasing hydrothermal treatment time the product＇s phase was transformed from basic aluminum sulfate to boehmite.After 24 h hydrothermal treatment,the product could be completely changed to boehmite.With increasing hydrothermal treatment time,the micromorphology of the hydrolysis product experienced the evolution of smooth dense globe to core-shell sphere to hollow sphere.

关 键 词：中空球 薄水铝石 水热 硫酸铝 

分 类 号：TQ050.421[化学工程]