人工晶体学报2017，Vol.46Issue(3)：495-500,6.
硫酸钠熔盐制备片状α-Al2O3的研究
Preparation of Alpha-alumina Platelets by Sodium Sulfate Molten Salt
摘要
Abstract
The alpha-alumina platelets were prepared in sodium sulphate molten salt by dry method mixing molten salt and different source γ-Al2O3 respectively.The γ-Al2O3 was prepared with aluminum sulfate octadecahydrate and aluminum hydroxide respectively.The results indicate that the alumina platelets cannot be prepared in sodium sulphate molten salt with aluminum hydroxide as the source of γ-Al2O3.The decomposed aluminum hydroxide remaine pseudomorph of the spherical polyhedron.A small amount of alumina platelet is grown and inserted in the spherical polyhedron through dissolution-precipitation due to molten salt could only dissolved alumina in the spherical polyhedron surface.The dispersed alumina platelets could be obtained in sodium sulphate molten salt with aluminum sulfate octadecahydrate as the source of γ-Al2O3.The well dispersed γ-Al2O3, decomposed from aluminum sulfate octadecahydrate, completely dissolve in molten salt, then alumina platelets precipitated out in molten salt when the molar ratio of γ-Al2O3∶Na2SO4 is 1∶4.关键词
十八水合硫酸铝(Al2(SO4)3·18H2O)/硫酸钠(Na2SO4)/熔盐法/片状氧化铝Key words
aluminum sulfate octadecahydrate/sodium sulphate/molten salt method/alumina platelets分类
化学化工引用本文复制引用
王雪竹,吴锋,张明旺,孙娜娜,房卉,薛宗伟,李心慰..硫酸钠熔盐制备片状α-Al2O3的研究[J].人工晶体学报,2017,46(3):495-500,6.基金项目
2015年鞍山市科学技术计划项目(2946) （2946）
2015年辽宁科技大学青年教师科研基金项目(2015QN06) （2015QN06）
辽宁科技大学大学生创新创业训练计划项目(DC2016278) （DC2016278）
