α-FeOOH和α-Fe_(2)O3纳米棒的制备及其对高氯酸铵热分解的催化作用  

Preparation ofα-FeOOH andα-Fe_(2)O_(3)Nanorods and Their Catalytic Effect on Thermal Decomposition of Ammonium Perchlorate

作　　者：陈丽娟[1] 黄惠[2] CHEN Lijuan;HUANG Hui(School of Safety Technology and Environmental Engineering,Fujian Chuanzheng Communications College,Fuzhou 350007,China;School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350002,China)

机构地区：[1]福建船政交通职业学院安全与环境学院,福州350007 [2]福州大学机械工程及自动化学院,福州350002

出　　处：《机械工程材料》2023年第4期28-32,共5页Materials For Mechanical Engineering

基　　金：国家自然科学基金资助项目(52105053);福建省自然科学基金资助项目(2020J01452,2022J01389);校级科技服务团队环境污染及治理研究项目(20200202)。

摘　　要：以FeSO_(4)·7H_(2)O和CH_(3)COONa·3H_(2)O为原料,采用水热方法制备α-FeOOH纳米棒,将所得α-FeOOH纳米棒于250℃烧结2 h制备α-Fe_(2)O3纳米棒,采用差热-热重分析法研究了制备的α-FeOOH和α-Fe_(2)O3纳米棒对高氯酸铵热分解的催化性能。结果表明:在100℃水热反应6 h可制备得到平均直径为18 nm的纯相α-FeOOH纳米棒,再于250℃烧结2 h后获得平均直径为16 nm的纯六方相α-Fe_(2)O3纳米棒;α-Fe_(2)O3和α-FeOOH纳米棒对高氯酸铵热分解的催化效果显著,添加质量分数2%的α-Fe_(2)O3纳米棒和α-FeOOH纳米棒可使高氯酸铵的结束分解温度分别降低40,54℃,高温分解峰值温度分别降低51.1,61.6℃;当α-Fe_(2)O3纳米棒添加质量分数达到10%时,高氯酸铵的高温分解峰值温度降低约90.9℃。α-FeOOH nanorods were prepared by hydrothermal method with FeSO_(4)·7H_(2)O and CH_(3)COONa·3H_(2)O as raw materials,and thenα-Fe_(2)O_(3)nanorods were obtained by sintering the synthesizedα-FeOOH nanorods at 250℃for 2 h.The catalytic performance ofα-FeOOH andα-Fe_(2)O3 nanorods on the thermal decomposition of ammonium perchlorate was investigated by differential thermal and thermogravimetric analysis.The results show that pure phaseα-FeOOH nanorods with an average diameter of 18 nm were prepared by hydrothermal reaction at 100℃for 6 h.After sintering the synthesizedα-FeOOH nanorods at 250℃for 2 h,the pure hexagonal phaseα-Fe_(2)O_(3)nanorods with an average diameter of 16 nm were obtained.The catalytic effect ofα-Fe_(2)O_(3)andα-FeOOH nanorods on the thermal decomposition of ammonium perchlorate was significant;after adding 2 mass%α-FeO_(3)nanorods and 2 mass%α-FeOOH nanorods,the end decomposition temperature of ammonium perchlorate decreased by 40℃and 54℃,and the high temperature decomposition peak temperature decreased by 51.1℃and 61.6℃,respectively.When the mass fraction ofα-Fe_(2)O_(3)nanorods reached 10%,the high temperature decomposition peak temperature was reduced by about 90.9℃.

关 键 词：α-Fe_(2)O_(3)纳米棒 α-FeOOH纳米棒 高氯酸铵 热分解 

分 类 号：O642[理学—物理化学]