中文摘要：

以Fe（NO）3·9H2O和KOH为原料,在100℃下水热反应6h制备了α-FeOOH纳米棒,并在不同温度下对其进行热处理,得到具有一维纳米孔结构的α-Fe2O3单晶.用XRD和TEM对α-FeOOH和热处理产物α-Fe2O3的物相、形貌进行表征,并结合TGA和FT-IR研究了α-FeOOH的热处理过程.结果表明,α-FeOOH在239～295℃温度区间发生脱水相变α-FeOOH→α-Fe2O3.纳米α-Fe2O3很好地保持棒状,但在其表面出现了孔洞,随着温度的升高孔洞趋于愈合.采用DTA考察了α-Fe2O3纳米棒对高氯酸铵（AP）的催化作用.不同温度下热处理得到的α-Fe2O3均使AP的高温分解温度显著降低,其中350℃热处理得到的α-Fe2O3纳米棒使AP高温分解温度最大降幅达71.4℃.

英文摘要：

The α-FeOOH nanorods were prepared via hydrothermal reaction of Fe（NO3）3·9H2O and KOH at 100℃ for 6h. Then the a-FeOOH nanords were heat treated at different temperautres, and single crystalline and multiporous α-Fe2O3 nanorods were obtained. The phase and morphology of the samples were characterized by XRD and TEM. The heat treatment process was investigated by TGA and FT-IR. The results show that the phase transition of α-FeOOH →α-Fe2O3 occurrs between 239℃ and 259.1℃. The α-Fe2O3 still keeps in rod shape and lots of holes appear on the surface which disappear with the temperature increasing. The catalytic performance of α-Fe2O3 nanorods was studied by decomposition of ammonium perchlorate（AP） based on DTA. The higher-temperature of exothermic peak of AP shifts towards low temperature when α-Fe2O3 nanorods are introduced into the reaction, and the largest decrement reaches 71.4℃ for the α-Fe2O3 nanorods heat treated at 350℃.