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通过超临界相和液相条件下苯烃化反应的实验研究和催化剂的测试分析，发现Ｙ型分子筛催化剂的失活是由于副反应的存在，在催化剂表面上生成了多环大分子物质（称为焦前物）。实验结果表明，超临界反应可以抑制催化剂的结焦，超临界相催化剂活性与液相催化剂活性相比在四倍以上。本文研究超临界流体中的分子扩散传质行为，以并四苯、并五苯和并六苯为焦前物的代表物，建立超临界苯烃化反应过程中焦前物的粗硬球分子扩散模型。
Through the experimental research of benzene alkylation reaction and the catalyst test under supercritical and liquid phase conditions, it was found that the deactivation of the Y zeolite catalyst was due to the presence of side reactions and the formation of polycyclic macromolecules on the catalyst surface For the focal material). The experimental results show that the supercritical reaction can suppress the coking of the catalyst, and the supercritical phase catalyst activity is more than four times that of the liquid phase catalyst. In this paper, the molecular diffusion and mass transfer behaviors of supercritical fluid are studied. The tetrabenzene, pentacene and hexacene are the precursors of the precursors. model.