纳米铁酸铜的制备及对RDX热分解的催化作用

推进技术 ›› 2003, Vol. 24 ›› Issue (6): 560-562.

纳米铁酸铜的制备及对RDX热分解的催化作用

洪伟良,刘剑洪,田德余,赵凤起,王芳

圳大学师范学院化学生物系;广东深圳518060;圳大学师范学院化学生物系;广东深圳518060;国防科技大学航天与材料工程学院;湖南长沙410073;西安近代化学研究所;陕西西安710065;圳大学师范学院化学生物系;广东深圳518060

发布日期:2021-08-15
基金资助:
国家重点实验室基金项目 (0 0JS3 5 3 2 QT51 0 1 )。

Synthesis of nanometer-CuFe₂O₄ and its catalysis on thermal decomposition of RDX

Dept. of Chemistry and Biology, Normal Coll., Shenzhen Univ., Shenzhen 518060, China;Dept. of Chemistry and Biology, Normal Coll., Shenzhen Univ., Shenzhen 518060, China;Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;Xi’an Modern Chemistry Research Inst., Xi’an 710065, China;Dept. of Chemistry and Biology, Normal Coll., Shenzhen Univ., Shenzhen 518060, China

Published:2021-08-15

摘要/Abstract

摘要： 以CuCl2·2H2O和Fe(NO3)3·9H2O为原料,采用室温固相化学反应法制备出三种不同铜、铁摩尔质量比的纳米CuFe2O4粉体,产物的粒径约为5nm。采用差示扫描量热法(DSC)测试了纳米CuFe2O4对RDX热分解的催化作用。结果表明:纳米CuFe2O4对RDX热分解有明显的催化效果。在三种纳米CuFe2O4中,铜、铁摩尔质量比为1∶1的纳米CuFe2O4的催化效果最好,它使RDX的分解峰温前移了17 8℃,放热量增加了250J/g,活化能降低了21 9kJ/mol。纳米CuFe2O4的用量增加对RDX热分解的催化效果显著增大。

关键词: 固体推进剂;纳米CuFe2O4+;硝胺推进剂;热分解;燃烧催化剂

Abstract: Nanometer CuFe₂O₄ with different mole mass ratio of Cu and Fe was synthesized by solid-state reaction method using CuCl₂·2H₂O and Fe（NO₃）₃·9H₂O with NaOH at room temperature. The particle size, crystal form, and phase were determined with XRD and TEM. Average particle size of nanometere CuFe₂O₄ were about 5nm. The catalytic performance of nanometer CuFe₂O₄ on the thermal decomposition of RDX was investigated by DSC. The results show that among the three nanometer CuFe₂O₄, the catalytic performance of nanometer CuFe₂O₄ with mole mass ratio of 1∶1 for Cu and Fe is the best. The peak temperature of thermal decomposition of RDX shifts 17.8℃ downward under the effect of nanometer CuFe₂O₄ （1∶1） and the decomposition enthalpy of RDX increases by 250J/g as well as the apparent activation energy of the thermal decomposition of RDX decreases by 21.9kJ/mol. Its catalytic performance enhances greatly with increasing CuFe₂O₄ （1∶1） content.

Key words: Solid propellant;Nanometer-CuFe₂O₄⁺;Nitramine propellant;Thermal decomposition;Combustion catalyst

洪伟良,刘剑洪,田德余,赵凤起,王芳. 纳米铁酸铜的制备及对RDX热分解的催化作用[J]. 推进技术, 2003, 24(6): 560-562.