纳米2,4-二羟基苯甲酸铜的制备及其催化RDX热分解研究  

Preparation of Nano Copper 2,4-Dihyoxybenzoicacid Catalyst and Its Catalytic Performance on the Decomposition of RDX

作　　者：雷若辰 柳宛彤 张明 金红晓[1] 金顶峰[1] LEI Ruo-chen;LIU Wan-tong;ZHANG Ming;JIN Hong-xiao;JIN Ding-feng(College of Materials and Chemistry,China Jiliang University,Hangzhou 310018,China;Science and Technology on Combustion and Explosion Laboratory,Xi′an Modern Chemistry Research Institute,Xi′an 710065,China)

机构地区：[1]中国计量大学材料与化学学院,浙江杭州310018 [2]西安近代化学研究所燃烧与爆炸技术重点实验室,陕西西安710065

出　　处：《火炸药学报》2022年第6期835-840,共6页Chinese Journal of Explosives & Propellants

基　　金：西安近代化学研究所开放合作创新基金(No.SYJJ20210417)。

摘　　要：为考察微反应器对纳米燃烧催化剂合成的影响,采用硝酸铜和2,4-二羟基苯甲酸为原料,利用星型微流混合器合成了纳米2,4-二羟基苯甲酸铜催化剂;利用激光粒度分析仪(LSA)、X射线衍射(XRD)、氮气吸脱附、扫描电子显微镜(SEM)和热重分析技术(TG)表征了催化剂的物理化学性质,考察了微流反应时间对催化剂晶型、比表面积、形貌等的影响。结果表明,在室温环境、进样流速为1mL/min,混合时间为15min的实验条件下,所制备出的催化剂形貌为规则的片状结构,平均粒径为100nm,比表面积为21.6265m^(2)/g;将燃烧催化剂与RDX混合后的DSC结果表明,2,4-二羟基苯甲酸铜-15使得RDX的分解峰温度由242.3℃降低到239.1℃,催化热分解效果最佳。To investigate the influence of microreactor on the synthesis of nano-combustion catalysts,the nano copper 2,4-dihyoxybenzoicacid catalysts were synthesized with Cu(NO3)2and 2,4-dihyoxybenzoicacid as primary substances by using a star-type microreactor.The obtained samples were characterized by laser size analysis(LSA),X-ray diffraction(XRD),N2adsorption-desorption,scanning electronic microscopy(SEM),and thermogravimetric analysis(TG).The effects of the preparation conditions on the average particle size,crystal type,SBET and morphology of the catalysts were also studied.The results show that the morphology of the catalyst presents a regular-shaped sheet when the preparation conditions are at room temperature,and the better velocity of flow of the microreactor is 1 mL/min,and the mixed time is 15 min.The catalyst sheet with a size of 100 nm and a specific surface area of 21.6265 m^(2)/g was obtained.The DSC results showed that the copper 2,4-dihydroxybenzoate-15 with the mixing time of 15 min reduced the peak temperature decomposition of RDX from 242.3℃to 239.1℃,which indicates that the catalyst exhibits better catalytic efficiency for thermal decomposition of RDX.

关 键 词：物理化学 燃烧催化剂 2 4-二羟基苯甲酸铜 微反应器 硝酸铜 星型混合器 纳米催化剂 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] TQ261.2[化学工程—有机化工]