A series of Mo₂N/HZSM-5 and transition metal modified Mo₂N/HZSM-5 catalysts were prepared for the catalytic upgrading of pine wood-derived pyrolytic vapors for the selective production of monocyclic aromatic hydrocarbons (MAHs), while restraining the formation of polycyclic aromatic hydrocarbons (PAHs). Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were performed to determine the effects of several factors on selective MAHs production, including Mo₂N loading on HZSM-5, transition metal (Fe, Ce, La, Cu, Cr) modification of Mo₂N/HZSM-5, pyrolysis temperature, and catalyst-to-biomass ratio. In addition, quantitative experiments were conducted to determine the actual yields of major aromatic hydrocarbons and the source of aromatic hydrocarbons from basic biomass components. Results indicated that among the various catalysts, the Ce-10%Mo₂N/HZSM-5 exhibited the best performance on promoting the formation of MAHs and restraining the generation of PAHs. Under the optimal conditions, the actual yields of MAHs and PAHs from Ce-10%Mo₂N/HZSM-5 catalytic process were 99.8 mg/g and 7.5 mg/g, while those from HZSM catalyst were only 77.2 mg/g and 23.7 mg/g respectively. Furthermore, the possible catalytic mechanism of the Ce-Mo₂N/HZSM-5 catalyst was proposed based on the catalyst characterization.

制备了一系列Mo ₂ N / HZSM-5和过渡金属改性的Mo ₂ N / HZSM-5催化剂，用于催化改性松木衍生的热解蒸气，以选择性生产单环芳烃（MAH），同时抑制多环芳烃（PAHs）的形成。进行了热解气相色谱/质谱（Py-GC / MS）实验，以确定几种因素对选择性MAHs产生的影响，包括HZSM-5上的Mo ₂ N负载，过渡金属（Fe，Ce，La，Cu， Cr）对Mo _2的改性N / HZSM-5，热解温度和催化剂生物量比。此外，进行了定量实验，以确定主要芳香烃的实际产量以及来自基本生物质组分的芳香烃的来源。结果表明，在各种催化剂中，Ce-10％Mo ₂ N / HZSM-5在促进MAHs生成和抑制PAHs生成方面表现出最佳性能。在最佳条件下，Ce-10％Mo ₂ N / HZSM-5催化过程的MAHs和PAHs的实际产率分别为99.8 mg / g和7.5 mg / g，而HZSM催化剂的实际产率仅为77.2 mg / g和23.7毫克/克。此外，Ce-Mo ₂可能的催化机理基于催化剂的表征，提出了N / HZSM-5催化剂。