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低温 (2 80℃ )条件下 ,通过二甲苯中AlCl3 和NaN3 的反应制备出了AlN纳米微粒。 70 0℃退火 4 8h后 ,得到了纯的立方相AlN纳米晶。通过XRD、FTIR和定域电子衍射分析 ,验证了立方相AlN纳米晶的生成。经XRD和TEM分析 ,纳米晶的平均粒度约为 3nm。色质联 (GC MS)检测结果显示 ,由于AlN纳米颗粒对二甲苯的催化作用 ,使二甲苯发生聚合和杂化环反应 ,得到了二联苯、萘、蒽、三甲基咔唑及咔唑胺等多环芳烃。作为对比实验 ,分别研究了NaN3 和AlCl3 对二甲苯的催化性能 ,发现没有多环芳烃的生成
AlN nanoparticles were prepared by the reaction of AlCl3 and NaN3 in xylene at low temperature (280 ℃). After annealing at 70 ℃ for 48 h, pure cubic AlN nanocrystals were obtained. The formation of cubic AlN nanocrystals was verified by XRD, FTIR and localized electron diffraction. By XRD and TEM analysis, the average size of nanocrystals is about 3nm. The results of GC-MS showed that xylene was polymerized and hybridized by the catalysis of para-xylene by AlN nanoparticles to obtain biphenyl, naphthalene, anthracene, trimethyl carbazole and carbazole Azole amine and other polycyclic aromatic hydrocarbons. As a comparative experiment, respectively, the catalytic performance of NaN3 and AlCl3 p-xylene and found no polycyclic aromatic hydrocarbons