摘要
用DSC和TG研究了Al2O3、Fe2O3、TiO2、SnO24种纳米燃速催化剂对7-氨基-6-硝基-4,5-二氧化呋咱(CL-18)热分解特性的影响。结果发现它们均使CL-18的起始反应温度降低、终止反应温度升高;Fe2O3、TiO2、SnO2不仅提高了反应放热量而且使整个反应变得相对平稳,随催化剂含量的增加最大失重速率温度先升高后降低,但CL-18的固态残留物量随催化剂含量的增加却一直减少;SnO2和Al2O3对CL-18的两个活化能影响较大,使CL-18的第一活化能分别降低了13.18kJ/mol和16.25kJ/mol,第二活化能分别降低了40.49kJ/mol和43.96kJ/mol;然而Fe2O3仅仅对第二活化能有较大影响,降低了40.41kJ/mol。
The effect of nano-catalyists (Al2O3, Fe2O3, TiO2, SnO2) on the decomposition of aminonitrobenzodifuroxane is studied by DSC and TG. The results show that four nano-catalysts all decrease its onset decomposition temperature and increase its end temperature. Fe2O3, TiO2 and SnO2 not only improve quantity of releasing heat of CL-18, but make the reaction relatively stable. With the increase of their content, the temperature of the most themogravimetric rate firstly increases and then decreases, but the quantity of the last solid residual always decreases. SnO2 and Al2O3 respectively make the first activation energy decrease 13.18 kJ/mol and 16.25 kJ/mol, and make the second activation energy decrease 40.49 kJ/mol and 43.96 kJ/mol. However, Fe2O3 only has an effect on the second activation energy and make it decrease 40.41 kJ/mol.
出处
《火炸药学报》
EI
CAS
CSCD
2004年第2期48-51,59,共5页
Chinese Journal of Explosives & Propellants
基金
兵器预研基金资助(40406030502)
