The Upgrading of Bio‐Oil via Hydrodeoxygenation

Oyedun, Adetoyese Olajire; Patel, Madhumita; Kumar, M. Dinesh; Kumar, Amit

doi:10.1002/9783527814794.ch2

Cited by 11 publications

(5 citation statements)

References 118 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Condensable species, which form the bio-oil, include mainly phenols, alcohols, ketones, aldehydes, lignin-derived acids, sugar derivatives, water, and aromatics, according to data reported by other analytics [30][31][32][33].…”

Section: Pyrolysismentioning

confidence: 99%

Biomass Polygeneration System for the Thermal Conversion of Softwood Waste into Hydrogen and Drop-In Biofuels

et al. 2023

View full text Add to dashboard Cite

In order to keep the +1.5 °C over-temperature, previously predicted with high confidence by IPPC Sixth Assessment, as minimal as feasible, it is more than vital to achieve a low-emission energy system. Polygeneration systems based on thermochemical processes involve biomass conversion in multi-output of bioenergy carriers and chemicals. Due to reduced energy input and input/output diversification, polygeneration energy systems are considered interesting pathways that can increase competitiveness of biomass-derived products. The proposed route of fast pyrolysis, sorption-enhanced biochar gasification and crude bio-oil hydrodeoxygenation to produce drop-in biofuel and hydrogen is examined. Both kinetic and equilibrium approaches were implemented in Aspen Plus to take into account the effect of the major operating parameters on the process performance and then validated against the literature data. Results show how the process integration leads to improved mass conversion yield and increases overall energy efficiency up to 10%-points, reaching the maximum value of 75%. Among the various parameters investigated, pyrolysis temperature influences mainly the products distribution while Steam/Biochar and Sorbent/Biochar affect the energy conversion efficiency.

show abstract

Section: Pyrolysismentioning

confidence: 99%

Biomass Polygeneration System for the Thermal Conversion of Softwood Waste into Hydrogen and Drop-In Biofuels

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Furthermore, the high oxygen content in bio-oils reduces their heating value. Therefore, catalytic processes, such as HDO, have been employed to obtain upgraded biofuels and reduce the oxygen content . Given the rich diversity of organic compounds in bio-oils and the aforementioned issues, various analytical speciation methods have been reported to date, including gas chromatography (GC), comprehensive two-dimensional gas chromatography (GC × GC), flash chromatography, high-performance liquid chromatography (HPLC), , gel permeation chromatography (GPC), and detection systems, such as ultraviolet–visible (UV–vis), refractive index detector (RID), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), , mass spectrometry (MS) system, and high-resolution mass spectrometry (HRMS). ,− …”

Section: Focus On Bio-oilsmentioning

confidence: 99%

Bio-oil Inorganic Analysis: A Minireview of Current Trends, Challenges, and Future Perspectives

et al. 2023

View full text Add to dashboard Cite

The analysis of the inorganic content of bio-oils has not been widely reported in the literature. In this work, the analytical methods employed for the quantification and speciation of inorganic species in bio-oils are summarized. Total inorganic analysis of bio-oils is commonly performed using inductively coupled plasma optical emission spectrometry and inductively coupled plasma mass spectrometry techniques; however, other quantitation techniques are compiled and discussed in this review. Additionally, the few studies that have recently been reported on the inorganic speciation of bio-oils by supercritical fluid chromatography−inductively coupled plasma mass spectrometry, gel permeation chromatography−inductively coupled plasma highresolution mass spectrometry, and electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry are also addressed. Cumulatively, the reports suggest that the lack of standard analytical methods in the total inorganic analysis of bio-oils is a major contributor to inaccurate results. Thus, future research with analytical methodologies already applied in crude oils should be adapted to account for the unique bio-oil(s) matrix. Such a strategy offers a path toward more accurate inorganic speciation/quantitation of inorganics in bio-oils, which might be the key to the understanding of production problems, storage stability, and upgrading processes commonly encountered with such samples.

show abstract

“…Many catalysts have been tested in HDO of bio-oils, including noble metals such as Pt or Pd, ,, or non-noble metals such as Mo, Co, , or Ni − and presulfided NiMo or CoMo, ,, which are typically supported on alumina . These catalysts were tested in numerous studies using model compounds ,,− and actual feedstocks. − …”

Section: Bio-oil Upgrading Processesmentioning

confidence: 99%

“…190 The use of hydrogen and catalysts based on rare earths in hydrodeoxygenation of oxygenated compounds imposes high operation costs. 55,135,141,191,192 This fact has promoted the search for alternative processes, focused on the transfer of hydrogen from donor compounds to oxygenated compounds, also considering that the donor could be an oxygenated species to avoid the use of hydrogen. Usually, simple compounds with an alcohol function −OH have been considered as the donors, with their cracking providing the hydrogen which migrate to the oxygenated receptor (Figure 18).…”

Section: Bimolecular Dehydration (Condensation)mentioning

confidence: 99%

Review on Reaction Pathways in the Catalytic Upgrading of Biomass Pyrolysis Liquids

et al. 2021

View full text Add to dashboard Cite

Bio-oils are the liquid products from the pyrolysis of biomass, which captured pronounced attention and showed relevance as an alternative source of fuels and chemicals. Bio-oils are complex mixtures of a large number of components, mostly oxygenated compounds, including many different chemical functionalities, which require upgrading (removal of oxygen) to be useful as fuels. As acid or bifunctional metal/acid catalysts are used in upgrading, the components in the mixture will be subjected to many different chemical reactions, including, among others, decarboxylation, decarbonylation, dehydration, demethoxylation, hydrogenation, dehydrogenation, cracking, isomerization, and hydrogen transfer. Purely thermal reactions are also to be produced in upgrading processes. Thus, the set of chemical reactions is exceptionally intricate. This review provides broad information about the mechanisms of numerous reactions which can take place, based on a transversal view, that is, the emphasis is posed on the reactions and the corresponding descriptions embrace the different chemical groups.

show abstract

The Upgrading of Bio‐Oil via Hydrodeoxygenation

Cited by 11 publications

References 118 publications

Biomass Polygeneration System for the Thermal Conversion of Softwood Waste into Hydrogen and Drop-In Biofuels

Biomass Polygeneration System for the Thermal Conversion of Softwood Waste into Hydrogen and Drop-In Biofuels

Bio-oil Inorganic Analysis: A Minireview of Current Trends, Challenges, and Future Perspectives

Review on Reaction Pathways in the Catalytic Upgrading of Biomass Pyrolysis Liquids

Contact Info

Product

Resources

About