Catalytic hydrotreatment of fast-pyrolysis oil using non-sulfided bimetallic Ni-Cu catalysts on a δ-Al2O3 support

Ardiyanti, A. R.; Хромова, С. А.; Venderbosch, R. H.; Yakovlev, V. А.; Heeres, Hero J.

doi:10.1016/j.apcatb.2011.12.032

Cited by 210 publications

(139 citation statements)

References 40 publications

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“…The addition of Mo as a promoter benefited nickel species uniformity and inhibited NiAl 2 O 4 spinel formation in MoNi/γ-Al 2 O 3 catalyst. Bimetallic Ni-Cu/δ-Al 2 O 3 catalysts were more active and outperformed monometallic Ni/δ-Al 2 O 3 or Cu/δ-Al 2 O 3 for the HDO of fast pyrolysis oil [137]. This was due to the smaller size and increased number of active Ni x Cu 1−x clusters in the catalyst.…”

Section: Transition Metal Catalystsmentioning

confidence: 75%

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

et al. 2016

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Abstract:The massive consumption of fossil fuels and associated environmental issues are leading to an increased interest in alternative resources such as biofuels. The renewable biofuels can be upgraded from bio-oils that are derived from biomass pyrolysis. Catalytic cracking and hydrodeoxygenation (HDO) are two of the most promising bio-oil upgrading processes for biofuel production. Heterogeneous catalysts are essential for upgrading bio-oil into hydrocarbon biofuel. Although advances have been achieved, the deactivation and regeneration of catalysts still remains a challenge. This review focuses on the current progress and challenges of heterogeneous catalyst application, deactivation, and regeneration. The technologies of catalysts deactivation, reduction, and regeneration for improving catalyst activity and stability are discussed. Some suggestions for future research including catalyst mechanism, catalyst development, process integration, and biomass modification for the production of hydrocarbon biofuels are provided.

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Section: Transition Metal Catalystsmentioning

confidence: 75%

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

et al. 2016

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“…The reaction conducted at 150 and 180°C for 2 h with H2 purge. The HDO products analysed by GC-MS and gave hydrocarbons (4-5) and oxy-compounds (6)(7)(8) in respective yield (Scheme 1 , Fig, 4). According to Scheme 1, the hydrocarbon derivatives is octane (4) and trideca-1,3,5-triene (5), which may be obtained from HDO reaction of 2 and 3, respectively.…”

Section: Sequential Condensation and Hydrodeoxygenation (Hdo) Reactionmentioning

confidence: 99%

“…was also reported the HDO of guaiacol using Pt/HZSM converted to cyclohexane [3]. The used of non-noble metal catalyst, such as Ni, Cu and Fe supported on SiO2 was mainly reported for hydrogenolysis [4][5], pyrolysis reaction [6] and methane decomposition [7]. In my knowledge, there is a limited publication using Ni/SiO2 or Cu/SiO2 catalyst for HDO in liquid phase except the used of Ni-Cu/SiO2 alloy reacted at high temperature and high pressure [1,8].…”

Section: Introductionmentioning

confidence: 99%

Sequential Condensation and Hydrodeoxygenation Reaction of Furfural-Acetone Adduct over Mix Catalysts Ni/SiO<sub>2</sub> and Cu/SiO<sub>2</sub> in Water

2018

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“…However, only few groups tested their catalysts with raw pyrolysis oil [23,26,27]. For this reason the systematic testing of nickel-based catalysts on raw pyrolysis oil was the objective of a previous work conduced in our institute [28].…”

Section: Introductionmentioning

confidence: 99%

Catalytic hydrodeoxygenation of pyrolysis oil over nickel-based catalysts under H2/CO2 atmosphere

Olbrich

Boscagli

Raffelt

et al. 2016

Sustain Chem Process

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Background: Renewable feedstocks and bio-refinery concepts are the key to a successful transition to a sustainable chemical industry. One conceivable refinery concept is based on pyrolysis oils from biomass, though these oils are quite difficult to handle. A well investigated approach to upgrade pyrolysis oil and turn it into a valuable products is catalytic hydrodeoxygenation (HDO). However, this process has to be optimized and new ideas are needed to make the hydrodeoxygenation process attractive sustainable and economically competitive. With regard to the many successful applications of gas-expanded liquids in heterogeneous catalysis, the expansion of pyrolysis oil with carbon dioxide was applied in the context of a hydrodeoxygenation reaction. The catalyst used for HDO was Ni/Al 2 O 3 (nickel loading 20 %wt). Results:The influence of CO 2 on the viscosity was found to be quite strong at low temperature. At 52 °C and a CO 2 pressure of 0.5 MPa the viscosity is reduced by 30 %. With 4.0 MPa of CO 2 the viscosity decreases by 60 %. With supercritical CO 2 a volume expansion of 5 % was observed. The hydrodeoxygenation showed best results at 340 °C and autogenous pressure. The experiments were started at a total pressure of 8.0 MPa at room temperature (H 2 + CO 2 ), with a respective partial pressure of CO 2 of 0 MPa, 2.0 MPa or 4.0 MPa. A deoxygenation degree of around 70 % could be reached (dry basis) under each atmosphere. The analysis of the upgraded products by different techniques indicated a slight decrease of hydrogenation with increasing the pressure of CO 2 .Conclusions: Despite we observed a change in the physical properties when expanding the pyrolysis oil with CO 2 , no real improvement of the catalytic hydrodeoxygenation reaction (e.g. deoxygenation degree) could be found yet. Possible reasons for the absence of gas-expanded liquid effects could be the polar nature of the used pyrolysis oil and the high temperature. We assume that a viscous and more tar-like, but less polar pyrolysis oil will be more influenced. Gas-expansion with CO 2 tends to be less effective with polar liquids due to the unpolar nature of CO 2 . The only observed effect in our actual system was a decrease of the hydrogenation with decreasing partial pressure of hydrogen.

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Catalytic hydrotreatment of fast-pyrolysis oil using non-sulfided bimetallic Ni-Cu catalysts on a δ-Al2O3 support

Cited by 210 publications

References 40 publications

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

Sequential Condensation and Hydrodeoxygenation Reaction of Furfural-Acetone Adduct over Mix Catalysts Ni/SiO<sub>2</sub> and Cu/SiO<sub>2</sub> in Water

Catalytic hydrodeoxygenation of pyrolysis oil over nickel-based catalysts under H2/CO2 atmosphere

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