Effects of nano-structured CoMo catalysts on hydrodeoxygenation of fast pyrolysis oil in supercritical ethanol

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)182-194
Journal / PublicationCatalysis Today
Volume269
Publication statusPublished - 1 Jul 2016
Externally publishedYes

Abstract

Effects of in-house prepared CoMo catalysts supported on various nano-structured materials (activated carbon, γ-alumina, HZSM-5, MCM-41 and SBA-15) and a commercial catalyst of Ru/C were compared for hydrodeoxygenation (HDO) of fast pyrolysis oil (PO) in supercritical ethanol at 300 and 350 °C. All catalysts proved to be effective for significantly reducing the molecular weight of the PO by HDO treatment at 350 °C. Although Ru/C catalyst produced the highest oil yield at both temperatures (66.6 wt% at 300 °C and 61.0 wt% at 350 °C) with the lowest and negligible coke formation (<1 wt%), the catalyst is very expensive and difficult for regeneration, so it is not a viable catalyst for bio-oil upgrading on a large scale. Among all the supported CoMo catalysts, CoMo/MCM-41 produced the highest yield of oil products (light oil (OL) + heavy oil (HO)) of the highest H/C molar ratio. With this catalyst, the oil yield attained 61.9 wt% at 300 °C and 57.8 wt% at 350 °C, and the spent catalyst after regeneration produced almost the same oil yields as the fresh one. In addition, CoMo catalysts supported on MCM-41 and SBA showed better resistance to coke/carbon deposition in the HDO process, compared with CoMo catalysts supported on HZSM-5 and Al2O3. © 2015 Elsevier B.V. All rights reserved.

Research Area(s)

  • Bio-oil, CoMo catalysts, Hydrodeoxygenation, Mesoporous materials, Nano-structured catalysts, Supercritical ethanol

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

Effects of nano-structured CoMo catalysts on hydrodeoxygenation of fast pyrolysis oil in supercritical ethanol. / Ahmadi, Shima; Yuan, Zhongshun; Rohani, Sohrab et al.
In: Catalysis Today, Vol. 269, 01.07.2016, p. 182-194.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review