The gas phase selective hydrocracking process of tetralin (biomass tar model chemical compound) into benzene, toluene and xylenes (BTX) was carried out over the H-Beta, H-Mordenite, H-USY, H-Y, and H-ZSM-5 zeolite catalysts in a packed bed reactor under applied atmospheric pressure. To the best of our scientific knowledge, this performed work presents the first systematic investigation, focused on tetralin, cracking to BTX under ambient 1 bar. The highest catalytic activity and carbon deposition resistance were established over the H-ZSM-5 (SiO₂/Al₂O₃ = 30) with the selectivity to the BTX of 52.2 mol.% in intermediates’ liquid phase, 88.7 mol.% of total conversion yield after the 4 h time on stream, 370 °C and gas hourly space velocity (GHSV) = 530 h^–1, and limited site deactivation. The gas phase was analyzed and ethylene, propane, ethane and methane were identified as main gas products in the product mixture at different reaction conditions. All catalysts were characterized by BET, ICP-AES, XRD, HRSEM, NH₃-TPD, and pyridine-DRIFT technique. This high catalytic performance of the H-ZSM-5 catalyst is attributed to the presence the high mesopore volume and mesopore surface area, the mild acidity and the highest Brönsted to Lewis acid sites ratio (BAS/LAS) comparing with other studied zeolite catalysts. Based on the experimental results, the reaction pathway of tetralin transformation into BTX was proposed. Hydrocracking, ring opening, ring contraction, dehydrogenation/hydrogenation, alkylation/dealkylation, isomerization, and overcracking reactions were involved. Results were consistent with the occurrence of the monomolecular reaction mechanism.

在H-Beta，H-丝光沸石，H-USY，HY和H-ZSM-5沸石上进行四氢化萘（生物质焦油模型化合物）气相选择性加氢裂化为苯，甲苯和二甲苯（BTX）的过程。在施加的大气压下，在填充床反应器中使用催化剂。据我们所知，该研究工作是首次系统研究，重点是四氢化萘，在环境1  bar下裂化为BTX 。在H-ZSM-5（SiO ₂ / Al ₂ O ₃  =  30）上建立了最高的催化活性和抗碳沉积性， 在中间体液相中对BTX的选择性为52.2摩尔％，在中间体液相中对BTX的选择性为88.7 摩尔％。 4之后的总转化率 上电时间，370  °C和气时空速（GHSV） =  530  h ^–1，并且站点失活受限。分析气相并在不同反应条件下将乙烯，丙烷，乙烷和甲烷鉴定为产物混合物中的主要气体产物。所有催化剂均通过BET，ICP-AES，XRD，HRSEM，NH _3进行表征-TPD和吡啶-DRIFT技术。H-ZSM-5催化剂的这种高催化性能归因于与其他研究过的沸石催化剂相比，存在高的中孔体积和中孔表面积，适度的酸度和最高的布朗斯台德与路易斯酸位比（BAS / LAS）。根据实验结果，提出了四氢化萘转化为BTX的反应途径。涉及加氢裂化，开环，环收缩，脱氢/氢化，烷基化/脱烷基，异构化和过度裂化反应。结果与单分子反应机理的发生是一致的。