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四环庚烷是一种具有高张力笼状结构的液态燃料。采用气相色谱质谱联用仪、傅里叶变换红外光谱仪和核磁共振波谱仪表征光敏异构化合成的四环庚烷分子结构,采用热裂解-气相色谱质谱联用仪研究了四环庚烷300~800℃的裂解产物,结果表明合成的四环庚烷的分子结构和理论结构一致,气相色谱归一化法测得纯度为94%。四环庚烷在400℃以下不发生裂解,只有部分气化产物和其同分异构体;500~650℃的裂解产物以环状烯烃为主;随着温度的升高,裂解产物由环状烯烃向苯类化合物转变,高于750℃时裂解产物转变成联苯及多环芳烃化合物。
Tetracycloheptane is a liquid fuel with a high tensile cage structure. The molecular structure of tetracycloheptane synthesized by photoisomerization was characterized by gas chromatography-mass spectrometry, Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The thermal decomposition-gas chromatography-mass spectrometry ~ 800 ℃. The results showed that the molecular structure and the theoretical structure of the synthesized tetracycloheptane were the same. The purity was 94% by gas chromatography normalization method. Tetracycloheptane does not cleave below 400 ℃, only partial vaporization products and its isomers; the cracking products at 500-650 ℃ are mainly cyclic alkenes; with the increase of temperature, the cleavage products consist of rings Alkene to benzene compounds transition, higher than 750 ° C pyrolysis products into biphenyl and polycyclic aromatic compounds.