Gas-phase hydrodeoxygenation of guaiacol over Fe/SiO2 catalyst

Olcese, Roberto N.; Bettahar, M.M.; Petitjean, D.; Malaman, B.; Giovanella, F.; Dufour, Anthony

doi:10.1016/j.apcatb.2011.12.005

Cited by 307 publications

(230 citation statements)

References 56 publications

Supporting

Mentioning

207

Contrasting

Unclassified

Order By: Relevance

“…The phenolic compounds catalyzed by NiFe/HBeta could be converted to both cycloalkanes and aromatic hydrocarbons due to the synergistic effect between Ni and Fe. Olcese et al compared the activity of Fe/SiO 2 and Co/Kieselguhr for the gas phase HDO of guaiacol at 623-723 K [96]. They found that Fe/SiO 2 showed good selectivity to form aromatic hydrocarbons but did not exhibit activity for the hydrogenation of the aromatic ring.…”

Section: Non-noble Metal Catalystsmentioning

confidence: 99%

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

et al. 2017

View full text Add to dashboard Cite

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.

show abstract

Section: Non-noble Metal Catalystsmentioning

confidence: 99%

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

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The major reaction pathway was the cleavage of C-O rather than C-C during the bio-oil HDO process. Fe/SiO 2 was an active and selective catalyst for HDO upgrading of guaiacol to produce aromatic hydrocarbons, and it exhibited a good selectivity for BT (benzene, toluene) production [139].…”

Section: Transition Metal Catalystsmentioning

confidence: 99%

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

et al. 2016

View full text Add to dashboard Cite

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.

show abstract

“…Given that carbon nanofibers and carbon nanotubes are respectively grown using Ni and Fe catalysts and that the hydrodeoxygenation of guaiacol has been reported to proceed over both Ni [19][20][21] and Fe [22][23][24] catalysts, the activity of the bare supports could conceivably be caused by the residual presence of these metals. Indeed, the Ni and Fe content of the carbon supports was measured by means of Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) and determined to be non-negligible, as shown in Table 4.…”

Section: Catalyst Evaluation In Dodecanementioning

confidence: 99%

Activated Carbon, Carbon Nanofiber and Carbon Nanotube Supported Molybdenum Carbide Catalysts for the Hydrodeoxygenation of Guaiacol

et al. 2015

View full text Add to dashboard Cite

Abstract:Molybdenum carbide was supported on three types of carbon support-activated carbon; multi-walled carbon nanotubes; and carbon nanofibers-using ammonium molybdate and molybdic acid as Mo precursors. The use of activated carbon as support afforded an X-ray amorphous Mo phase, whereas crystalline molybdenum carbide phases were obtained on carbon nanofibers and, in some cases, on carbon nanotubes. When the resulting catalysts were tested in the hydrodeoxygenation (HDO) of guaiacol in dodecane, catechol and phenol were obtained as the main products, although in some instances significant amounts of cyclohexane were produced. The observation of catechol in all reaction mixtures suggests that guaiacol was converted into phenol via sequential demethylation and HDO, although the simultaneous occurrence of a direct demethoxylation pathway cannot be discounted. Catalysts based on carbon nanofibers generally afforded the highest yields of phenol; notably, the only crystalline phase detected in these samples was Mo2C or Mo2C-ζ, suggesting that crystalline Mo2C is particularly selective to phenol. At 350 °C, carbon nanofiber supported Mo2C afforded near quantitative guaiacol conversion, the selectivity to phenol approaching 50%. When guaiacol HDO was performed in the presence of acetic acid and furfural, guaiacol conversion decreased, although the selectivity to both catechol and phenol was increased. OPEN ACCESSCatalysts 2015, 5 425

show abstract

Gas-phase hydrodeoxygenation of guaiacol over Fe/SiO2 catalyst

Cited by 307 publications

References 56 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

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

Activated Carbon, Carbon Nanofiber and Carbon Nanotube Supported Molybdenum Carbide Catalysts for the Hydrodeoxygenation of Guaiacol

Contact Info

Product

Resources

About