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Characterization of analytical fast pyrolysis vapors of medium-density fiberboard (mdf) using metal-modified HZSM-5

2018; Elsevier BV; Volume: 136; Linguagem: Inglês

10.1016/j.jaap.2018.10.019

1873-250X

Francieli Martins Mayer, Camila M. Teixeira, José Geraldo A. Pacheco, Cláudia Telles de Souza, Deiverti de Vila Bauer, Elina Bastos Caramão, Juliana da Silveira Espíndola, Jorge Otávio Trierweiler, Oscar W. Perez‐Lopez, Cláudia Alcaraz Zini,

Flame retardant materials and properties

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.