Abstract The high total worldwide production of MDF residues represents a concern due to its low value applications, disposal, and toxic potential. Catalytic and thermal fast pyrolyses of MDF wastes were studied using analytical pyrolysis-GC/MS. HZSM-5S impregnated with 5 metals were synthesized, characterized and designated as Co5S, Fe5S, Nb5S, Ni5S and Zn5S. All catalysts improved the percentage of monoaromatic hydrocarbons (MAH, 23.77–47.61%) and of PAH (0.66–5.07%), while they were not detected in thermal pyrolyses of the 4 MDF residues. Among catalysts, Ni5S improved the selectivity of BTX compared to HZSM-5S (26.22–37.90%), followed by Fe5S (31.40%). Performance of Co5S and Nb5S was similar to HZSM-5S, while Zn5S provided a lower MAH content (23.77%). The increase in hydrocarbons turned bio-oil into a product that more closely resembles fuel composition, while thermal pyrolyses provided mainly oxygenated compounds that can be used in other uses.

中文翻译：

---

使用金属改性 HZSM-5 对中密度纤维板 (MDF) 的分析快速热解蒸汽进行表征

摘要 由于中密度纤维板残留物的低价值应用、处置和毒性潜力，其在全球范围内的高总产量令人担忧。使用分析型热解-GC/MS 研究了 MDF 废物的催化和热快速热解。合成了浸渍 5 种金属的 HZSM-5S，表征并命名为 Co5S、Fe5S、Nb5S、Ni5S 和 Zn5S。所有催化剂都提高了单芳烃 (MAH, 23.77–47.61%) 和 PAH (0.66–5.07%) 的百分比，而在 4 种 MDF 残留物的热裂解中未检测到它们。在催化剂中，与 HZSM-5S 相比，Ni5S 提高了 BTX 的选择性（26.22-37.90%），其次是 Fe5S（31.40%）。Co5S 和 Nb5S 的性能与 HZSM-5S 相似，而 Zn5S 提供较低的 MAH 含量 (23.77%)。