柠檬酸铋的制备、结构表征及其在固体推进剂中的催化作用  

Synthesis of Bismuth Citrate and Its Effect on Combustion of Double-base Propellant and RDX-CMDB Propellant

作　　者：宋秀铎[1] 赵凤起[1] 张蕊娥[1] 高红旭[1] 郝海霞[1] 李上文[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《兵工学报》2006年第4期643-647,共5页Acta Armamentarii

基　　金：国防科技重点实验室基金资助项目(51455030205ZS3505)

摘　　要：以柠檬酸、氧化铋为原料,制备了柠檬酸铋(CIT-Bi),收率达到80%,采用FT-IR、元素分析和X荧光衍射法对其结构进行了表征。研究了柠檬酸铋对双基和RDX-CMDB推进剂燃烧的催化作用,结果表明,柠檬酸铋对双基系推进剂燃烧有良好的催化作用,能显著提高推进剂的燃速,降低压力指数,特别是与少量炭黑复合后,对推进剂的催化效率更高。用热重-微商热重分析(TG-DTG)、X荧光衍射法和FT-IR研究了柠檬酸铋催化剂的催化作用机理。Using citric acid and Bi203 as raw materials, bismuth citrate （CIT-Bi） was synthesized m 80% yield. Its chemical structure was characterized using FT-IR, X-ray fluorescence diffraction and elementary analysis. The catalytic performance of CIT-Bi in the combustion of double-base propellant and RDX-CMDB propellant was investigated. The result shows that CIT-Bi possesses good catalytic effect on combustion of double-base propellant and RDX-CMDB propellant and excellent ability to reduce pressure exponent. Especially, when CIT-Bi together with a little carbon black （CB） is used, the catalytic efficiency is higher. And the catalytic mechanism of CIT-Bi was studied by TG-DTG, X-ray fluorescence diffraction and FT-IR.

关 键 词：物理化学 柠檬酸铋 燃烧催化剂 RDX-CMDB推进剂 双基推进剂 催化作用机理 

分 类 号：V512.2[航空宇航科学与技术—航空宇航推进理论与工程]