【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。更多还原

【Abstract】 Using citric acid and Bi₂O₃ 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.更多还原