摘要
使用程序升温（２９８－８４３Ｋ）和等温（５２３Ｋ、５７３Ｋ和６２３Ｋ）热失重分析研究了多种方法制备的尖晶石结构铁酸盐ＭＦｅ２Ｏ４（Ｍ＝Ｆｅ、Ｍｎ、Ｃｏ、Ｎｉ）的还原行为，讨论了铁酸盐的制备方法、粒径和比表面积对其还原性能的影响。根据程序升温过程中和等温还原下铁酸盐的失重量分别定量地测定了其活化速度和失氧速度，得出了制备氧缺位铁酸盐ＭＦｅ２Ｏ４－δ（０＜δ≤１）的最佳温度和时间。
Reduction Behavior of ferrite MFe 2O 4(M=Fe, Mn, Co, Ni) with spinel structure prepared by various methods were studied by non isothermal reduction (298 843K) and isothermal reduction thermal weight loss analysis The effect of the preparation methods, the particle size and the specific surface area on the reduction behavior were also discussed The velocity of activating and oxygen loss were measured quantitatively according to the weight loss of ferrite during the process of non isothermal and isothermal reduction The optimum temperature and time of preparation of ferrite MFe 2O 4 δ (0< δ <1) were obtained
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1999年第2期211-217,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金
