柠樣酸铋的制备、结构表征及其在固体推进剂中的催化作用

以柠檬酸、氧化铋为原料，制备了柠檬酸铋(CIT-Bi)，收率达到80%，釆用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届，能显著提高推进剂的燃速，降低压カ指数,特别是与少量炭黑复合后，对推进刹的催化效率更高。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。

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

Using citric acid and Bi_2O_3 as raw materials,bismuth citrate(CIBi) was synthesized in 80% yield.Its chemical structure was characterized using FIR,X-ray fluorescence diffraction and elementary analysis.The catalytic performance of CIBi in the combustion of double-base propellant and RDCMDB propellant was investigated.The result shows that CIBi possesses good catalytic effect on combustion of double-base propellant and RDCMDB propellant and excellent ability to(reduce) pressure exponent.Especially,when CIBi together with a little carbon black(CB) is used,the catalytic efficiency is higher.And the catalytic mechanism of CIBi was studied by TDTG,X-ray fluorescence diffraction and FIR.