摘要
为了给采用机械化学法从Fe2O3或粗粒Fe3O4获得单相Fe3O4纳米颗粒提供理论参考,探讨了机械力储能对铁氧化物机械化学反应热力学的影响规律。结果表明,在空气中,铁氧化物的机械化学分解温度随储能的增加而线性下降,导致反应体系中的各物相在热力学上稳定存在的温度范围发生变化。据此,在储能-温度坐标系上确定了以Fe2O3或Fe3O4为起始反应物的机械化学反应体系中期望物相Fe3O4的热力学稳定区,从而得出了获得单相Fe3O4颗粒的热力学条件。
With the purpose of giving theoretical insight for preparation of single phase of Fe304 particles from Fe203 or coarse Fe304 using mechanoehemical method, the impact of stored energy on the thermodynamics of the mechanoehemi- cal reaction of iron oxides was discussed. Results showed that the mechanochemieal decomposition temperature of iron ox- ides in air decreases linearly with the increase of stored energy, and subsequently the phases in the reaction system changes within the temperature ranges in thermodynamically stable. On these ground, the thermodynamically stable region for Fe3 O4 in the mechanochemical reaction system with Fe203 （or Fe304 ） as the starting reactant were drawn in the stored energy- temperature coordinate system, and thereby the the^nodynamic condition for preparation of single phase of Fe304 from ei- ther Fe203 or F% O4 were clarified.
出处
《金属矿山》
CAS
北大核心
2013年第10期54-57,共4页
Metal Mine
基金
国家自然科学基金项目(编号:51164026
50704021)
内蒙古自然科学基金项目(编号:2012MS0710)
