Liquid-phase Hydrodeoxygenation of 4-Propylphenol to Propylbenzene : Reducible Supports for Pt Catalysts

Eveliina Mäkelä*, José Luis González Escobedo, Jouni Neuvonen, Jouko Lahtinen, Marina Lindblad, Ulla Lassi, Reetta Karinen, Riikka L. Puurunen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
53 Downloads (Pure)

Abstract

Pyrolysis and liquefaction biocrudes obtained from lignocellulose are rich in phenolic compounds that can be converted to renewable aromatics. In this study, Pt catalysts on reducible metal oxide supports (Nb2O5, TiO2), along with irreducible ZrO2 as a reference, were investigated in the liquid-phase hydrodeoxygenation (HDO) of 4-propylphenol (350 °C, 20 bar H2, organic solvent). The most active catalyst was Pt/Nb2O5, which led to the molar propylbenzene selectivity of 77 %, and a yield of 75 % (98 % conversion). Reducible metal oxide supports provided an increased activity and selectivity to the aromatic product compared to ZrO2, and the obtained results are among the best reported in liquid-phase. The reusability of the spent catalysts was also studied. The spent Pt/Nb2O5 catalyst provided the lowest conversion, while the product distribution of the spent Pt/ZrO2 catalyst changed towards oxygenates. The results highlight the potential of pyrolysis or liquefaction biocrudes as a source of aromatic chemicals.

Original languageEnglish
Pages (from-to)4090-4104
Number of pages15
JournalChemCatChem
Volume12
Issue number16
Early online date20 May 2020
DOIs
Publication statusPublished - 20 Aug 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • hydrodeoxygenation
  • platinum
  • propylbenzene
  • propylphenol
  • reducible support

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