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Title: Hydrodeoxygenation of the aqueous fraction of bio-oil with Ru/C and Pt/C catalysts

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Publication Date:
Sponsoring Org.:
OSTI Identifier:
Grant/Contract Number:
FG36-08GO18212; EP/F012098/21
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Applied Catalysis. B, Environmental
Additional Journal Information:
Journal Volume: 165; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-05-30 15:34:38; Journal ID: ISSN 0926-3373
Country of Publication:

Citation Formats

Sanna, Aimaro, Vispute, Tushar P., and Huber, George W. Hydrodeoxygenation of the aqueous fraction of bio-oil with Ru/C and Pt/C catalysts. Netherlands: N. p., 2015. Web. doi:10.1016/j.apcatb.2014.10.013.
Sanna, Aimaro, Vispute, Tushar P., & Huber, George W. Hydrodeoxygenation of the aqueous fraction of bio-oil with Ru/C and Pt/C catalysts. Netherlands. doi:10.1016/j.apcatb.2014.10.013.
Sanna, Aimaro, Vispute, Tushar P., and Huber, George W. 2015. "Hydrodeoxygenation of the aqueous fraction of bio-oil with Ru/C and Pt/C catalysts". Netherlands. doi:10.1016/j.apcatb.2014.10.013.
title = {Hydrodeoxygenation of the aqueous fraction of bio-oil with Ru/C and Pt/C catalysts},
author = {Sanna, Aimaro and Vispute, Tushar P. and Huber, George W.},
abstractNote = {},
doi = {10.1016/j.apcatb.2014.10.013},
journal = {Applied Catalysis. B, Environmental},
number = C,
volume = 165,
place = {Netherlands},
year = 2015,
month = 4

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.apcatb.2014.10.013

Citation Metrics:
Cited by: 40works
Citation information provided by
Web of Science

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  • Aqueous-phase hydrodeoxygenation of sugar and sugar-derived molecules can be used to produce a range of alkanes and oxygenates. In this paper, we have identified the reaction intermediates and reaction chemistry for the aqueous-phase hydrodeoxygenation of sorbitol over a bifunctional catalyst (Pt/SiO2–Al2O3) that contains both metal (Pt) and acid (SiO2–Al2O3) sites. A wide variety of reactions occur in this process including Csingle bondC bond cleavage, Csingle bondO bond cleavage, and hydrogenation reactions. The key Csingle bondC bond cleavage reactions include: retro-aldol condensation and decarbonylation, which both occur on metal catalytic sites. Dehydration is the key Csingle bondO bond cleavage reaction andmore » occurs on acid catalytic sites. Sorbitol initially undergoes dehydration and ring closure to produce cyclic C6 molecules or retro-aldol condensation reactions to produce primarily C3 polyols. Isosorbide is the major final product from sorbitol dehydration. Isosorbide then undergoes ring opening hydrogenation reactions and a dehydration/hydrogenation step to form 1,2,6-hexanetriol. The hexanetriol is then converted into hexanol and hexane by dehydration/hydrogenation. Smaller oxygenates are produced by Csingle bondC bond cleavage. These smaller oxygenates undergo dehydration/hydrogenation reactions to produce alkanes from C1–C5. The results from this paper suggest that hydrodeoxygenation chemistry can be tuned to make a wide variety of products from biomass-derived oxygenates.« less
  • The present work corresponds to part of a program aimed at upgrading oil obtained by pyrolysis of biomass by hydrotreatment (hydrodeoxygenation HDO). CoMo sulfide catalysts, nonsupported, supported on different supports (alumina, carbon, silica), or modified by K or Pt, were used. The authors used a model reacting mixture containing compounds representative of the molecules that must react to permit a primary stabilisation of the pyrolytic oil: 4-methy lacetophenone (4-MA), diethylsebacate (DES), and guaiacol (GUA). In the reaction of the carbonyl group of the 4-MA it is shown that no important role is played by any acid-base mechanism; dispersion determines themore » activity. Acidity of the support influences the formation of active sites for decarboxylation and hydrogenation of the carboxyl group of DES. It was confirmed that guaiacol-type molecules lead to coking reactions. The role of acidity in the mechanism of these reactions is confirmed, but the modifications made in the catalysts in this work are still not sufficient to control coke deposition. The catalysts supported on carbon lead to the direct elimination of the methoxyl group of the guaiacol. Carbon, on the whole, seems to be a promising support. This work suggests that appropriate modifications of the hydrotreating catalysts can lead to a more effective process for stabilisation of the bio-oils by reaction with hydrogen. 55 refs., 3 figs., 5 tabs.« less