Catalytic upgrading of bio-oil by HZSM-5 in sub- and super-critical ethanol

Peng, Jun; Chen, Ping; Liu, Hui; Zheng, Xiaoming

doi:10.1016/j.biortech.2009.02.007

Cited by 185 publications

(106 citation statements)

References 17 publications

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“…A number of recent studies have examined acid catalysed esterification of bio-oils in alcohols [162,[164][165][166][167]. The main advantage here compared to simple solvent addition is much higher conversion of undesirable compounds, thus resulting in biooils with significantly improved properties.…”

Section: Developments In Acid-catalysed Esterificationmentioning

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

252

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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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Section: Developments In Acid-catalysed Esterificationmentioning

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

252

View full text Add to dashboard Cite

show abstract

“…Use of these alcohols in the supercritical regime has also been considered, exploiting superior fluid properties, the same rationale for hydrothermal liquefaction. Peng et al [111] compared the subcritical and supercritical upgrading of rice husk pyrolysis bio-oil with ethanol and HZSM-5 and reported the supercritical process as being more effective. The researchers observed that residue after vacuum distillation of unprocessed bio-oil and upgraded product was reduced from 38% to 15%.…”

Section: Esterificationmentioning

confidence: 99%

A Review of Hydrothermal Liquefaction Bio-Crude Properties and Prospects for Upgrading to Transportation Fuels

2015

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Hydrothermal liquefaction (HTL) presents a viable route for converting a vast range of materials into liquid fuel, without the need for pre-drying. Currently, HTL studies produce bio-crude with properties that fall short of diesel or biodiesel standards. Upgrading bio-crude improves the physical and chemical properties to produce a fuel corresponding to diesel or biodiesel. Properties such as viscosity, density, heating value, oxygen, nitrogen and sulphur content, and chemical composition can be modified towards meeting fuel standards using strategies such as solvent extraction, distillation, hydrodeoxygenation and catalytic cracking. This article presents a review of the upgrading technologies available, and how they might be used to make HTL bio-crude into a transportation fuel that meets current fuel property standards.

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“…(Mahfud et al, 2007) Most environmental catalysts applied in bio-oil upgrading are heterogeneous catalysts. Solid acid catalysts, solid base catalysts (Zhang et al, 2006), ionic liquid catalysts (Xiong et al, 2009), HZSM-5, and aluminum silicate catalysts were investigated for esterification of bio-oils (Peng et al, 2008(Peng et al, , 2009. Considering the simplicity, the low cost of some solvents such as methanol and their beneficial effects on the oil, this method seems to be the most practical approach for bio-oil quality upgrading.…”

Section: Solvent Addition / Etherificationmentioning

confidence: 99%