Hydrodeoxygenation of crude bio-oil in situ in the bio-oil aqueous phase with addition of zero-valent aluminum

Yang, Tianhua; Shi, Linping; Li, Rundong; Li, Bingshuo; Xing, Kai

doi:10.1016/j.fuproc.2018.10.025

Cited by 39 publications

(17 citation statements)

References 42 publications

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“…The Ni/Al 2 O 3 catalyst in either NiO or NiO(OH) (Ni 2+ ) form from the XPS and XRD results promoted the generation of a substantial amount of 2-methyl-phenol, which was possibly due to methylation of phenol. Similar findings were reported on the decrease of guaiacol and 1,2-benzenediol after HDO since they were converted into cyclohexanone and aromatic HCs such as biphenyl, 1,2,3,4-tetrahydro-5,6-dimethyl-naphthalene, hexamethyl benzene, and 1,3-dimethyl-1-cyclohexene via CH 3 -substitution, dehydration, or methyltransfer reactions . An enhancement of H 2 availability in the reaction liquid by augmenting H 2 pressure or the addition of a H 2 donor solvent significantly promotes the transformation of guaiacol into fully deoxygenated products via HDO with high efficiency …”

Section: Resultssupporting

confidence: 81%

“…It was found that the oxygen content decreased from 42.3 to 38.9%, corresponding to 7.9% oxygen removal after the HDO catalyzed by the NiMo/Al 2 O 3 catalyst at 350 °C. The decreased oxygen content is the result of decarbonylation/decarboxylation to generate steam, CO, and CO 2 In addition, it was found that after the HDO process in all conditions, the hydrogen content was increased.…”

Section: Resultsmentioning

confidence: 98%

“…The decreased oxygen content is the result of decarbonylation/decarboxylation to generate steam, CO, and CO 2 In addition, it was found that after the HDO process in all conditions, the hydrogen content was increased. This shows that the hydrogenation/hydrogenolysis of bio-oil occurs during the HDO process.…”

Section: Resultsmentioning

confidence: 98%

See 2 more Smart Citations

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

et al. 2021

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Hydrodeoxygenation (HDO) of bio-oil derived from liquefaction of a palm empty fruit bunch (EFB) in glycerol was investigated. To enhance the heating value and reduce the oxygen content of upgraded bio-oil, hydrodeoxygenation of light bio-oil over Ni- and Co-based catalysts on an Al2O3 support was performed in a rotating-bed reactor. Two consecutive steps were conducted to produce bio-oil from EFB including (1) microwave-assisted wet torrefaction of EFB and (2) solvothermolysis liquefaction of treated EFB in a Na2CO3/glycerol system. The HDO of as-prepared bio-oil was subsequently performed in a unique design reactor possessing a rotating catalyst bed for efficient interaction of a catalyst with bio-oil and facile separation of the catalyst from upgraded bio-oil after the reaction. The reaction was carried out in the presence of each mono- or bimetallic catalyst, namely, Co/Al2O3, Ni/Al2O3, NiMo/Al2O3, and CoMo/Al2O3, packed in the rotating-mesh host with a rotation speed of 250 rpm and kept at 300 and 350 °C, 2 MPa hydrogen for 1 h. From the results, the qualities of upgraded bio-oil were substantially improved for all catalysts tested in terms of oxygen reduction and increased high heating value (HHV). Particularly, the NiMo/Al2O3 catalyst exhibited the most promising catalyst, providing favorable bio-oil yield and HHV. Remarkably greater energy ratios and carbon recovery together with high H/O, C/O, and H/C ratios were additionally achieved from the NiMo/Al2O3 catalyst compared with other catalysts. Cyclopentanone and cyclopentene were the main olefins found in hydrodeoxygenated bio-oil derived from liquefied EFB. It was observed that cyclopentene was first generated and subsequently converted to cyclopentanone under the hydrogenation reaction. These compounds can be further used as a building block in the synthesis of jet-fuel range cycloalkanes.

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 98%

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Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

et al. 2021

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“…The oxygen content decreased significantly from original 44.87 wt.% in pine sawdust to 15.29 wt.% for upgraded bio-oil [28]. After the same strategy, zero-valent aluminium (ZV-Al) and bio-oil aqueous phase were used as hydrogen source in Yang's study [29]. As a result, the degree of deoxygenation of crude bio-oil reached 76.38%.…”

Section: Combined Metal Hydrolysis and Hdo Processmentioning

confidence: 99%

Cost-effective routes for catalytic biomass upgrading

Jin

Pastor‐Pérez

et al. 2020

Current Opinion in Green and Sustainable Chemistry

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Catalytic hydrodeoxygenation (HDO) is a fundamental and promising route for bio-oil upgrading to produce petroleum-like hydrocarbon fuels or chemical building blocks. One of the main challenges of this technology is the demand of high-pressure H 2 , which poses high costs and safety concerns. Accordingly, developing cost-effective routes for biomass or bio-oil upgrading without the supply of commercial H 2 is essential to implement the HDO at commercial scale. This article critically reviewed the very recent studies relating to the novel strategies for upgrading the biofeedstocks with 'green' H 2 generated from renewable sources. More precisely, catalytic transfer hydrogenation/hydrogenolysis, combined reforming and HDO, combined metal hydrolysis and HDO, water-assisted in-situ HDO and nonthermal plasma technology and self-supported hydrogenolysis are reviewed herein. Current challenges and research trends of each strategy are also proposed aiming to motivate further improvement of these novel routes to become competitive alternatives to conventional HDO technology.

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“…4,5 These oxygen groups are considered undesirable since they bring some properties such as acidity, corrosion and thermal instability. 6 Different upgrade processes such as cracking, 7 decarboxylation, 8 decarbonylation, 9 hydrodeoxygenation 10 have been investigated to decrease the oxygen content to convert bio-oil into fuel, 11 adhesives 12 and chemicals. 13 On the other hand, very few studies [14][15][16] have taken advantage of the oxygen and acidic properties of bio-oil.…”

Section: Introductionmentioning

confidence: 99%

New Magnetic Fe Oxide-Carbon Based Acid Catalyst Prepared from Bio-Oil for Esterification Reactions

Ballotin¹,

Almeida²,

Ardisson³

et al. 2020

J. Braz. Chem. Soc.

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In this work, bio-oil (an organic matrix rich in oxygen functionalities) was used to efficiently dissolve and disperse Fe 3+ which upon thermal treatment produced a carbon containing dispersed and encapsulated Fe oxide magnetic nanoparticles. These materials were prepared by dissolution of 8, 16 and 24 wt.% Fe 3+ salt in bio-oil followed by treatment at 400, 450, 500 or 600 °C in N 2 atmosphere. X-ray diffraction (XRD), scanning (SEM) and transmission electron microscopies (TEM), elemental analysis, thermogravimetric-mass spectrometry (TG-MS), potentiometric titration, Raman and Mössbauer spectroscopies showed that Fe 3+ species in bio-oil is reduced to produce magnetic nanoparticles phases: magnetite Fe 3 O 4 and maghemite γ-Fe 2 O 3. At low temperatures, the iron phases were less protected, and the carbon matrix was more reactive, while in temperatures above 500 °C, the iron phases were more stable, however, the carbon matrix was less reactive. Reaction of these magnetic carbon materials with concentrated H 2 SO 4 produced surface sulfonic acidic sites (ca. 1 mmol g −1), especially for the materials obtained at 400 and 450 °C. The materials were used as catalysts on esterification reaction of oleic acid with methanol at 100 °C and conversions of 90% were reached, however, after 2 consecutive uses, the conversion decreased to 30%, being required more studies to improve the material stability.

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Hydrodeoxygenation of crude bio-oil in situ in the bio-oil aqueous phase with addition of zero-valent aluminum

Cited by 39 publications

References 42 publications

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

Cost-effective routes for catalytic biomass upgrading

New Magnetic Fe Oxide-Carbon Based Acid Catalyst Prepared from Bio-Oil for Esterification Reactions

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Hydrodeoxygenation of crude bio-oil in situ in the bio-oil aqueous phase with addition of zero-valent aluminum

Cited by 39 publications

References 42 publications

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al2O3 or CoMo/Al2O3 Catalysts

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al2O3 or CoMo/Al2O3 Catalysts

Cost-effective routes for catalytic biomass upgrading

New Magnetic Fe Oxide-Carbon Based Acid Catalyst Prepared from Bio-Oil for Esterification Reactions

Contact Info

Product

Resources

About

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts

Upgrading of Light Bio-oil from Solvothermolysis Liquefaction of an Oil Palm Empty Fruit Bunch in Glycerol by Catalytic Hydrodeoxygenation Using NiMo/Al₂O₃ or CoMo/Al₂O₃ Catalysts