Carbon Nanofiber Supported Transition-Metal Carbide Catalysts for the Hydrodeoxygenation of Guaiacol

A. Jongerius, R.W. Gosselink, J. Dijkstra, J.H. Bitter, P.C.A. Bruijnincx, B.M. Weckhuysen

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Abstract

Hydrodeoxygenation (HDO) studies over carbon nanofiber-supported (CNF) W2C and Mo2C catalysts were performed on guaiacol, a prototypical substrate to evaluate the potential of a catalyst for valorization of depolymerized lignin streams. Typical reactions were executed at 55 bar hydrogen pressure over a temperature range of 300–375¿°C for 4 h in dodecane, using a batch autoclave system. Combined selectivities of up to 87 and 69¿% to phenol and methylated phenolics were obtained at 375¿°C for W2C/CNF and Mo2C/CNF at >99¿% conversion, respectively. The molybdenum carbide-based catalyst showed a higher activity than W2C/CNF and yielded more completely deoxygenated aromatic products, such as benzene and toluene. Catalyst recycling experiments, performed with and without regeneration of the carbide phase, showed that the Mo2C/CNF catalyst was stable during reusability experiments. The most promising results were obtained with the Mo2C/CNF catalyst, as it showed a much higher activity and higher selectivity to phenolics compared to W2C/CNF.
Original languageEnglish
Pages (from-to)2964-2972
JournalChemCatChem
Volume5
Issue number10
DOIs
Publication statusPublished - 2013

Keywords

  • molybdenum nitride catalysts
  • lignin model compounds
  • reaction network
  • aromatic chemicals
  • organosolv lignin
  • vegetable-oils
  • fast pyrolysis
  • depolymerization
  • conversion
  • hydrogenolysis

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    Jongerius, A., Gosselink, R. W., Dijkstra, J., Bitter, J. H., Bruijnincx, P. C. A., & Weckhuysen, B. M. (2013). Carbon Nanofiber Supported Transition-Metal Carbide Catalysts for the Hydrodeoxygenation of Guaiacol. ChemCatChem, 5(10), 2964-2972. https://doi.org/10.1002/cctc.201300280