爆轰灰中sp^(3)/sp^(2)碳比调控与性能研究  

Research on Regulation and Characterization of sp^(3)/sp^(2)Carbon Ratio in Detonation Soot

作　　者：商士远 王志超 宗韧哲 仝毅[1] 黄风雷[1] SHANG Shiyuan;WANG Zhichao;ZONG Renzhe;TONG Yi;HUANG Fenglei(State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《北京理工大学学报》2024年第12期1225-1232,共8页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(11572047)。

摘　　要：纳米碳的sp^(3)/sp^(2)碳比对其催化性能、导电性、生物相容性等性能及应用有重要影响.本文借助高氯酸对爆轰灰中sp^(3)/sp^(2)碳比进行调控,对纯化后的爆轰灰(purified detonation soot,PDS)的元素组成、物相构成、sp^(3)/sp^(2)碳比进行表征,制备具有不同sp^(3)/sp^(2)碳比的爆轰灰负载金属钌催化剂(Ru/PDS),探究Ru/PDS在苯二甲酸二甲酯(DMT)加氢制备1,4-环己烷二甲酸二甲酯(DMCD)的反应中的催化性能.结果表明:纯化后的爆轰灰较为纯净,主要物质是纳米金刚石为核心多层石墨烯为壳的纳米碳结构,sp^(3)/sp^(2)比值范围为0.991~1.483,I_(Dia)/I_(G)比值范围为0.447~0.856.DMT转化率最高可达66.67%,DMCD选择性均在81.93%以上,研究发现金属−载体相互作用是影响DMT转化率的重要因素.具有不同sp^(3)/sp^(2)碳比的爆轰灰将在工业催化、含能材料燃烧性能调节和润滑油改性方面具有广阔的发展前景.The sp^(3)/sp^(2)carbon ratio of nanocarbon has an important effect on its catalytic property,electrical con-ductivity,biocompatibility and other properties and its applications.In this paper,the sp^(3)/sp^(2)carbon ratio in the detonation soot was regulated by perchloric acid.The elemental composition,phase composition,and sp^(3)/sp^(2)car-bon ratio of the purified detonation soot(PDS)were characterized.Ruthenium(Ru)catalysts supported by PDS(Ru/PDS)with different sp^(3)/sp^(2)carbon ratios were prepared to investigate the catalytic performance of Ru/PDS in the hydrogenation of dimethyl terephthalate(DMT)to dimethyl 1,4-cyclohexanedicarboxylate(DMCD).The results showed that the PDS was relatively pure,and the main component was nano carbon structure with nan-odiamond as core and multilayer graphene as shell.The range of sp^(3)/sp^(2)ratio was 0.991~1.483,and the range of I_(Dia)/I_(G) was 0.447~0.856.The DMT conversion was up to 66.67%and the DMCD selectivity was above 81.93%.It is found that metal-support interaction is an important factor affecting DMT conversion.Detonation soot with different sp^(3)/sp^(2)carbon ratios will have a broad development prospect in industrial catalysis,combustion per-formance regulation of energetic materials and modification of lubricating oil.

关 键 词：爆轰灰 紫外-拉曼(UV-Raman) X射线光电子能谱(XPS) sp^(3)/sp^(2)碳比 高氯酸(HClO_(4)) 催化 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]