This work investigated the impact of pyrolysis medium and catalyst on the production of bio-BTX (benzene, toluene, and xylene) from Quercus Mongolica (Q. Mongolica) via catalytic pyrolysis. Two different pyrolysis media (N₂ and CH₄) and five different zeolite catalysts (HY, HBeta, HZSM-5, 1 wt.% Ni/HZSM-5, and 1 wt.% Ga/HZSM-5) were considered for the Q. Mongolica pyrolysis. The HZSM-5 yielded more BTX than the HY and HBeta due to its strong acidity. The employment of CH₄ as the pyrolysis medium improved the BTX yield (e.g., 2.7 times higher total BTX yield in CH₄ than in N₂) and resulted in low coke yield (e.g., 5.27% for N₂-pyrolysis and 2.57% for CH₄-pyrolysis) because the CH₄-drived hydrogen simulated a hydropyrolysis condition and facilitated dehydroaromatization reaction. CH₄ also led to direct coupling, Diels-Alder, and co-aromatization reactions during the pyrolysis, contributing to enhancing the BTX yield. The addition of Ga to the HZSM-5 could further increased the BTX yield by means of facilitating hydrocracking/demethylation and methyl radical formation from CH₄ assisting the generation of >C2 alkenes that could be further converted into BTX on acid sites of the HZSM-5.

这项工作研究了热解介质和催化剂对蒙古栎（Q. Mongolica）通过催化热解生产生物BTX（苯，甲苯和二甲苯）的影响。考虑使用两种不同的热解介质（N ₂和CH ₄）和五种不同的沸石催化剂（HY，HBeta，HZSM-5、1 wt。％Ni / HZSM-5和1 wt。％Ga / HZSM-5）。问：蒙古热解。由于HZSM-5具有强酸性，因此它比HY和HBeta产生更多的BTX。使用CH ₄作为热解介质可提高BTX产量（例如，CH _4中的总BTX产量比N ₂高2.7倍）并导致焦炭产量低（例如，N的5.27％）_2个-pyrolysis和CH 2.57％₄ -pyrolysis），因为CH ₄ -drived氢模拟了加氢条件以及易化脱氢反应。CH ₄在热解过程中还导致直接偶联，Diels-Alder和共芳构化反应，从而有助于提高BTX产量。在HZSM-5中添加Ga可以通过促进CH _4的加氢裂化/去甲基化和形成甲基来进一步提高BTX收率，协助生成> C2烯烃，并在HZSM-酸性位点进一步转化为BTX。 5，