用流变相-前驱物热分解法制备R₂O₃（R=La,Y,Gd）纳米粉体

用流变相-前驱物热分解法制备R 2 O 3 （R=La,Y,Gd）纳米粉体 Preparing of Nano-Sized Powder R 2 O 3 （R=La,Y,Gd） bythe Rheological Phase-Precursor Pyrolying Method 周享春 ZHOU Xiang-chun~1 1 2 3 first-author 李良超 LI Liang-chao~2 1 2 3 长江大学化学与环境工程学院 长江大学化学与环境工程学院 College of Chemistry and Environmental Engineering, Yangtze University College of Chemistry and Environmental Engineering, Yangtze University 浙江师范大学化学与生命科学学院,湖北,荆州,434020 浙江师范大学化学与生命科学学院,湖北,荆州,434020 Chemistry and Life Science College, Zhejiang Normal University Chemistry and Life Science College, Zhejiang Normal University ,浙江,金华,321004 ,浙江,金华,321004 用流变相反应法合成了La,Y和Gd的水杨酸盐前驱物,通过元素分析、热重分析确定的前驱物组成为R（HSal）3（R=La,Y和Gd,HSal=o OHC6H4COO）,并对其物相、结构及热分解行为进行了表征.结果显示:在空气中于800℃热分解前驱物,得到的固相残余物为纳米级R2O3粉末;R2O3基本上均为球形的纳米粒子;R2O3的中位粒径（d50）分别为19.3nm（La2O3）,53.8nm（Y2O3）和28.6nm（Gd2O3）,与X 射线粉末衍射及透射扫描电镜的结果比较吻合. Precursors of rare earth salicylate R（HSal） 3 (R=La,Y,Gd;HSal=o-OHC 6 H 4 COO )were synthesized by the rheological phase reaction method. Their constitution, substance phase and structure were characterized by elemental analysis, infrared spectra （IR）, X-ray powder diffraction （XRD） and thermalgravitity （TG）. Spherical R 2 O 3 nano-sized particles were prepared by pyrolysing the precursors in air on 800 ℃. The middle level diameter (d 50 ) of the particles are 19.3 nm(La 2 O 3 ),53.8 nm(Y 2 O 3 )and 28.6 nm (Gd 2 O 3 ) respectively, which are well in agreement with results of XRD and TEM. 流变相 稀土氧化物 纳米粉体 rheological phase rare earth oxide nano-sized powder TB383 湖北省教育厅重点科研项目（2003A010）;浙江师范大学引进人才基金资助（KYJ03Y02023） 2004-06-01 2021-04-01 6