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[1]叶平,鲁月文,许鹏飞,等.纳米CoFe2O4@C复合催化剂的制备及其对AP的催化性能[J].火炸药学报,2019,42(4):358-362.[doi:10.14077/j.issn.1007-7812.2019.04.007]
 YE Ping,LU Yue-wen,XU Peng-fei,et al.Preparation of CoFe2O4@C Nano-composites and Their Catalytic Performance for the Thermal Decomposition of Ammonium Perchlorate[J].,2019,42(4):358-362.[doi:10.14077/j.issn.1007-7812.2019.04.007]
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纳米CoFe2O4@C复合催化剂的制备及其对AP的催化性能()
     
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《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
42卷
期数:
2019年第4期
页码:
358-362
栏目:
出版日期:
2019-08-31

文章信息/Info

Title:
Preparation of CoFe2O4@C Nano-composites and Their Catalytic Performance for the Thermal Decomposition of Ammonium Perchlorate
作者:
叶平 鲁月文 许鹏飞 胡枭 何杰鑫 王茜 郭长平
西南科技大学四川省新型含能材料军民融合协同创新中心, 四川 绵阳 621010
Author(s):
YE Ping LU Yue-wen XU Peng-fei HU Xiao HE Jie-xin WANG Qian GUO Chang-ping
Sichuan Co-Innovation Center for New Energetic Materials, Southwest University of Science and Technology, Mianyang Sichuan 621010, China
关键词:
物理化学高氯酸铵AP海藻酸钠SA纳米铁酸钴
Keywords:
physical chemistryammonium perchlorateAPsodium alginateSAnanometer cobalt ferrate
分类号:
TJ55;TQ426
DOI:
10.14077/j.issn.1007-7812.2019.04.007
文献标志码:
-
摘要:
为了降低高氯酸铵(AP)的热分解温度,基于离子交换原理,通过喷雾法将海藻酸钠(SA)的钠离子与铁钴离子进行交换制备出海藻酸铁钴(FeCo/SA)复合物,经高温煅烧得到铁酸钴@碳(CoFe2O4@C)复合催化剂;采用XRD、FT-IR、SEM等对CoFe2O4@C形貌结构进行了表征;将复合催化剂加至AP中,通过DSC法考察了铁钴离子质量比和煅烧温度对AP热分解催化效果的影响。结果表明,通过离子交换,SA转变为FeCo/SA,常温常压下该复合物为无定型结构,煅烧后原位生成纳米铁酸钴(CoFe2O4)颗粒并负载在碳化后的碳骨架上,有效阻止了纳米CoFe2O4颗粒的团聚;在煅烧温度分别为300、400和600℃,铁钴离子的质量比为1:2、1:1和2:1时,煅烧产物均为CoFe2O4@C;其中铁钴离子质量比为2:1的FeCo/SA,经300℃煅烧得到的CoFe2O4@C使AP的高温分解峰温降低最多达到96.5℃,表明所制备的CoFe2O4@C复合催化剂能有效降低AP的热分解温度。
Abstract:
In order to reduce the thermal decomposition temperature of ammonium perchlorate (AP), an iron-cobalt alginate complex was prepared through the substitution of sodium ions in sodium alginate (SA) with iron and cobalt ions based on the ion exchange principle via spraying, and CoFe2O4@C composite catalyst was obtained by high temperature calcination. The morphology of CoFe2O4@C was characterized by XRD, FT-IR and SEM. The effects of iron-cobalt ion ratio and calcination temperature on the catalytic decomposition of AP were investigated by DSC method when the CoFe2O4@C was added into AP. The results show that SA is converted into iron-cobalt alginate after ion substitute and this composite is amorphous at ambient temperature and pressure. Nano-CoFe2O4 particles are generated in situ after calcination and supported on the carbonized carbon skeleton, which effectively prevents agglomeration of nano-CoFe2O4 particles. When the calcination temperatures are 300, 400 and 600℃, and the mass ratios of iron to cobalt ions are 1:2, 1:1 and 2:1, respectively, all the calcined products are CoFe2O4@C. When the iron-cobalt ion mass ratio of FeCo/SA is 2:1, CoFe2O4@C obtained by calcination at 300℃ reduces the pyrolysis peak of AP by 96.5℃, indicating that the prepared CoFe2O4@C composite catalyst can effectively reduce the thermal decomposition temperature of AP.

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备注/Memo

备注/Memo:
收稿日期:2018-08-11;改回日期:2019-01-10。
基金项目:中国工程物理研究院横向项目(No.18zh0056)
作者简介:叶平(1995-),男,硕士研究生,从事含能材料研究。E-mail:18781662182@163.com
通讯作者:郭长平(1982-),男,博士,从事含能材料改性研究。E-mail:guochangping001@163.com
更新日期/Last Update: 1900-01-01