Upgrading pyrolysis bio-oils by hydrodeoxygenation over non-sulfided NiMo/Al 2O 3 catalysts using guaiacol as a model compound

Zhong He, Xianqin Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pyrolysis oils are considered as reasonable and promising second-generation biofuels. However, the high oxygen content (26-47 wt.%) in bio-oils leads to a lower energy density than traditional fuels and the strong acidity (pH∼2-3) makes them enormously unstable. Herein, we evaluated hydrodeoxygenation (HDO) of guaiacol (GUA) as a bio-oil model compound over non-sulfide NiMo/Al 2O 3 under conditions close to those of conventional hydrotreatment process (300°C and 7.1 MPa), and the results were compared to those obtained with non-sulfided commercial catalyst CoMo/Al 2O 3. NiMo/Al 2O 3 was found to be superior to the commercial catalyst CoMo/Al 2O 3 with respect to conversion of GUA and HDO level in the liquid product mixture (O/C and H/C molar ratios). The main products for HDO of guaiacol were cyclohexane, methane, cyclohexanol, methyl-cyclohexane, and methyl-cyclopentane. The updated liquid products with C/H and C/O molar ratios close to those of gasoline and diesel were produced. Thus, non-sulfided NiMo/Al 2O 3 are promising catalysts for the treatment of bio-oils.

Original languageEnglish (US)
Title of host publication11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
StatePublished - Dec 1 2011
Event2011 AIChE Annual Meeting, 11AIChE - Minneapolis, MN, United States
Duration: Oct 16 2011Oct 21 2011

Publication series

Name11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings

Other

Other2011 AIChE Annual Meeting, 11AIChE
Country/TerritoryUnited States
CityMinneapolis, MN
Period10/16/1110/21/11

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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