不同形貌纳米α-Fe2O3粉体水热合成及其催化高氯酸铵热分解研究  

Hydrothemal Synthesis of Nanostructure α-Fe_2O_3 Powders with Different Morphologies and Their Catalytic Effect for the Ammonium Perchlorate

作　　者：李小红[1] 江向平[1] 文思逸[1] 展红全[1] 涂娜[1] 

机构地区：[1]景德镇陶瓷学院,江西省先进陶瓷材料重点实验室,景德镇333001

出　　处：《人工晶体学报》2013年第6期1132-1137,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51062005,91022027);江西省自然科学基金(20122BAB203019,2010GQW0038);江西省高等学校“先进陶瓷材料”科技创新团队;江西省主要学科学术和技术带头人培养对象计划项目(2010DD00800);江西省教育厅项目(GJJ11196,GJJ11197,GJJ10226,GJJ111204)

摘　　要：以Fe2(SO4)3为原料,在不同温度和时间进行水热反应,产物经过600℃下热处理6 h,得到了不同形貌的纳米α-氧化铁。通过XRD、SEM、TEM对α-Fe2O3的物相组成、形貌和微观结构进行表征。结果表明,花片状、海胆状、草莓状和哑铃状等多种形貌的产物均由纳米α-Fe2O3颗粒组装而成,纳米颗粒大小为10～50 nm。采用DTA分析了赤铁矿α-Fe2O3对高氯酸铵(AP)的催化性能。结果表明水热反应条件140℃保温4 h获得的花片状α-Fe2O3,使得高氯酸铵(AP)热分解温度提前了67.2℃,较其它形貌,催化效果明显。The nanostructure α-Fe2O3 powders with different morphologies have been synthesized by the hydrothermal method through the iron sulfate and then fired under 600 ℃ for 6 h.The effect of the hydrothermal temperature and holding time have been investigated,and the resultant powders have been observed by XRD,SEM,TEM and DTA.The results show that the flower-like,the sea urchins-like,the strawberry-like and dumbbell sheet-like powders synthesized under different hydrothermal parameters are assemblyed by 10-50 nm nanoparticles.The catalytic properties of different morphologies α-Fe2O3 powders have been studied by the decomposition of the ammonium perchlorate(AP),and it has been found that flower sheet like α-Fe2O3 powders that prepared under 140 ℃ for 4 h have significant decreased the thermal decomposition temperature by 67.2 ℃,showing a excellent catalytical property.

关 键 词：纳米α-Fe2O3粉体 催化性能 水热反应 高氯酸铵(AP) 

分 类 号：O641[理学—物理化学]