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| 纳米铁酸铜的制备及对RDX热分解的催化作用 |
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洪伟良1,2, 刘剑洪1,2, 田德余3,4, 赵凤起5,6, 王芳1,2
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1.圳大学师范学院化学生物系;2.广东深圳518060;3.国防科技大学航天与材料工程学院;4.湖南长沙410073;5.西安近代化学研究所;6.陕西西安710065
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| 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 |
| DOI： |
| 分类号:V512 |
| 基金项目:国家重点实验室基金项目 (0 0JS3 5 3 2 QT51 0 1 )。 |
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| Synthesis of nanometer-CuFe2O4 and its catalysis on thermal decomposition of RDX |
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HONG Wei-liang,LIU Jian-hong,TIAN De-yu,ZHAO Feng-qi,WANG Fang
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1.Dept. of Chemistry and Biology, Normal Coll., Shenzhen Univ., Shenzhen 518060, China;2.Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;3.Xi’an Modern Chemistry Research Inst., Xi’an 710065, China
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| 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 |
