Catalytic hydrotreatment of fast pyrolysis oil: Model studies on reaction pathways for the carbohydrate fraction

Wildschut, J.; Arentz, J.; Rasrendra, Carolus Borromeus; Venderbosch, R. H.; Heeres, Hero J.

doi:10.1002/ep.10390

Cited by 97 publications

(77 citation statements)

References 36 publications

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“…In addition to hydrogenation, a thermal pathway proceeded to form hydromethylfurfural, levulinic acid and humins. Furthermore, the study demonstrated that the acetic acid added in this system increased solids formation by promoting the thermal route [42].…”

Section: Hdo Of Other Oxygenatesmentioning

confidence: 85%

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

et al. 2017

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Abstract:Pyrolysis is considered the most promising way to convert biomass to fuels. Upgrading biomass pyrolysis oil is essential to produce high quality hydrocarbon fuels. Upgrading technologies have been developed for decades, and this review focuses on the hydrodeoxygenation (HDO). In order to declare the need for upgrading, properties of pyrolysis oil are firstly analyzed, and potential analysis methods including some novel methods are proposed. The high oxygen content of bio-oil leads to its undesirable properties, such as chemical instability and a strong tendency to re-polymerize. Acidity, low heating value, high viscosity and water content are not conductive to making bio-oils useful as fuels. Therefore, fast pyrolysis oils should be refined before producing deoxygenated products. After the analysis of pyrolysis oil, the HDO process is reviewed in detail. The HDO of model compounds including phenolics monomers, dimers, furans, carboxylic acids and carbohydrates is summarized to obtain sufficient information in understanding HDO reaction networks and mechanisms. Meanwhile, investigations of model compounds also make sense for screening and designing HDO catalysts. Then, we review the HDO of actual pyrolysis oil with different methods including two-stage treatment, co-feeding solvents and in-situ hydrogenation. The relative merits of each method are also expounded. Finally, HDO catalysts are reviewed in order of time. After the summarization of petroleum derived sulfured catalysts and noble metal catalysts, transitional metal carbide, nitride and phosphide materials are summarized as the new trend for their low cost and high stability. After major progress is reviewed, main problems are summarized and possible solutions are raised.

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Section: Hdo Of Other Oxygenatesmentioning

confidence: 85%

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

et al. 2017

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“…Repeated use of the Ru/C catalyst in hydrotreating experiments resulted in decreased liquid yield, increased solids, a reduction in H/C and less methane in the gas phase. Hydrodeoxygenation of model bio-oil compounds were investigated by Wildschut et al [135] under conditions of 250˚C, 10 MPa for 4.3 hours with an Ru/C catalyst. Two parallel reaction pathways were observed, a thermal non-catalysed pathway and a hydrogenation pathway leading to smaller polyols and gaseous hydrocarbons such as methane and ethane.…”

Section: 212european Research In Hydroprocessingmentioning

confidence: 99%

A review of recent laboratory research and commercial developments in fast pyrolysis and upgrading

Butler

Devlin

Meier³

et al. 2011

Renewable and Sustainable Energy Reviews

429

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Publication date 2011-10 Publication informationRenewable and Sustainable Energy Reviews, 15 (8): 4171-4186Publisher Elsevier Item record/more information http://hdl.handle.net/10197/5976 Publisher's statementThis is the author's version of a work that was accepted for publication in Renewable and Sustainable Energy Reviews. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Renewable and Sustainable Energy Reviews (VOL 15, ISSUE 8, (2011) ABSTRACT Robust alternative technology choices are required in the paradigm shift from the current crude oil-reliant transport fuel platform to a sustainable, more flexible transport infrastructure. In this vein, fast pyrolysis of biomass and upgrading of the product is deemed to have potential as a technology solution. The objective of this review is to provide an update on recent laboratory research and commercial developments in fast pyrolysis and upgrading techniques. Fast pyrolysis is a relatively mature technology and is on the verge of commercialisation. While upgrading of biooils is currently confined to laboratory and pilot scale, an increased understanding of upgrading processes has been achieved in recent times.

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“…Heeres et al performed fundamental studies on hydrotreatment of bio-oils and model compounds using a Ru/C catalyst [28]. Different levels of upgrading were studied from stabilisation with low levels of oxygen removal through mild hydrotreatment to two-stage hydrotreatment with substantial oxygen removal.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenation of bio-oil into higher alcohols over Ru/Fe3O4-SiO2 catalysts

Cherkasov

Jadvani

Mann

et al. 2017

Fuel Processing Technology

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Permanent WRAP URL:http://wrap.warwick.ac.uk/91922 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. AbstractLiquid-phase hydrogenation of a solution of furfural, phenol and acetic acid has been studied in the 50-235 o C range over magnetic Ru/Fe3O4-SiO2 catalyst targeting the renewable production of second generation biofuels with minimum hydrogen consumption.Phenol was fully hydrogenated to cyclohexanol in the entire temperature range. Below 150 o C, furfural was mainly hydrogenated to tetrahydrofurfuryl alcohol while hydrogenolysis to cyclopentanol was the main reaction pathway above 200 o C. The hydrogenation rate was doubled in an acidic solution (pH=3) as compared to that at a pH 6. The spent catalyst was regenerated and reused in subsequent catalytic runs.

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Catalytic hydrotreatment of fast pyrolysis oil: Model studies on reaction pathways for the carbohydrate fraction

Cited by 97 publications

References 36 publications

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

An Overview on Catalytic Hydrodeoxygenation of Pyrolysis Oil and Its Model Compounds

A review of recent laboratory research and commercial developments in fast pyrolysis and upgrading

Hydrogenation of bio-oil into higher alcohols over Ru/Fe3O4-SiO2 catalysts

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