尖晶石型铁酸盐的制备及表征研究  

STUDIES ON PREPARATION AND CHARACTERIZATION OF THE SPINEL FERRITE

作　　者：王力军[1,2] 张春雷[1,2] 李爽 吴通好[1,2] 

机构地区：[1]渝州大学化学系 [2]吉林大学化学系

出　　处：《无机化学学报》1996年第4期377-381,共5页Chinese Journal of Inorganic Chemistry

摘　　要：本文采用空气氧化的湿法制备了尖晶石型铁酸盐，得到最佳生成条件为：在空气流速为２００ｍｌ／ｍｉｎ和配料比Ｒ＝２ＯＨ－／（Ｍ２＋＋Ｆｅ２＋）≥１．０，Ｍ２＋／Ｆｅ２＋＝０．５（摩尔比）下氧化温度和时间分别为３４３－３５８Ｋ和１０－２５ｈ。使用ＸＲＤ、ＴＰＲ和ＴＰＤ等方法对所制备的铁酸盐进行了表征，研究了其结构特征及氧化－还原活性，并讨论了该活性与化学组成及结构的关系。The spinel ferrites were prepared by the wet method of air oxidation,which have the optimal conditions: R =2OH -/(M 2+ +Fe 2+ )≥1.0; M 2+ /Fe 2+ =0.5 mole rate, oxidation temperature of 343 385K, oxidation time of 10 25 hours.Through the methods of the XRD,TPR and TPD, their structure characteristics and redox properties were studied. And the relationships among activity, composition and structure were discussed.

关 键 词：尖晶石型 铁酸盐 制备 晶体结构 氧化 还原 湿法 

分 类 号：O614.811[理学—无机化学]