固相法制备Cr_2O_3微粒子  

Preparation of Cr_2O_3 fine powder by solid-phase reaction

作　　者：张西军[1] 袁伟[1] 

机构地区：[1]北京化工大学理学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2002年第1期71-74,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：以铬酸酐热分解制备Cr2 O3 工艺为基础 ,研究了反应温度、时间以及硼化物、氧化物、铬化合物、可燃性粉末添加物对产品性能的影响 ,发现在可燃性粉末质量分数为 2 %～ 3 %、适量水、温度为 70 0℃、时间为 90min的条件下 ,可得到平均粒径为 2 0 0nm ,分散性良好的Cr2 O3The preparation of Cr 2O 3 fine powder by calcining CrO 3 was reported. The effects of the temperature, time and the additives including the borate, oxides, dichromate and the combustible powder were researched. Under the conditions of 700 ℃ and 90 minutes, when 2%～3% of the combustible powder and the adequate water were added, it showed that the size of Cr 2O 3 powder was about 200 nm and its dispersivity was good.

关 键 词：固相法 制备 CR2O3 铬酸酐 热分解 三氧化二铬 微粒子 

分 类 号：TQ136.11[化学工程—无机化工] O614.611[理学—无机化学]