Naphthalene and Alkyl Naphthalene from Catalytic Fast Pyrolysis of Biomass Over ZSM-5 Aggregates

Abstract

Seed-induced synthesis of ZSM-5 aggregates was carried out without organic templates. The prepared ZSM-5 aggregates were used upgrading polar sawdust-derived pyrolytic vapors for the selective production of naphthalene and alkyl naphthalene. Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were conducted to analyze the pyrolytic product distribution and evaluate the catalyst performance. Due to the mesopores and proper acidities of ZSM-5 aggregates, the yield of naphthalene and methylnaphthalene over ZSM-5 aggregates were 36.0 and 123.7 mg/g, which were 2.7 and 2.6 times of those respectively over the commercial ZSM-5. The total selectivities of naphthalene and alkyl naphthalene could reach 61.56%.