Vapor-phase hydrodeoxygenation of guaiacol on Al-MCM-41 supported Ni and Co catalysts

Tran, Nga T.T.; Uemura, Yoshimitsu; Chowdhury, Sujan; Ramli, Anita

doi:10.1016/j.apcata.2015.12.021

Cited by 123 publications

(69 citation statements)

References 47 publications

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“…Phenol was also the main product in guaiacol HDO at 400 • C under atmospheric conditions over Co/Al-MCM-41 [34]. These results clearly show that both the metal type and reaction conditions, i.e., pressure and temperature, are decisive for the product distribution, for example, towards ring hydrogenation or HDO products.…”

Section: Kinetic Studies Elucidating the Reaction Pathways During Hdomentioning

confidence: 50%

“…Methanation was also observed in HDO of guaiacol over CoMo/ZrO 2 catalyst at 300 • C under 50 bar hydrogen [46] and Co/Al-MCM-41 at 400 • C under 1 bar [34]. In the latter work it was concluded that demethylation occurs only on the acid sites especially with high catalyst weight to flow rate [34]. Methanation could however, be inhibited in guaiacol HDO via transalkylation increasing the carbon efficiency [34,50].…”

Section: Different Reactions and Their Thermodynamic Feasibility In Hmentioning

confidence: 84%

“…In the latter work it was concluded that demethylation occurs only on the acid sites especially with high catalyst weight to flow rate [34]. Methanation could however, be inhibited in guaiacol HDO via transalkylation increasing the carbon efficiency [34,50]. On the other hand, a very low methanation activity occurred in HDO of anisole at 320 • C under 1 bar using MoO 3 /ZrO 2 catalyst [51].…”

Section: Different Reactions and Their Thermodynamic Feasibility In Hmentioning

confidence: 99%

“…Demethoxylation of 1,3,5-trimethoxybenzene followed by ring hydrogenation occurred over Rh/MCM-36 at 250 °C under 40 bar hydrogen in decane [26]. It was concluded in [34] that demethoxylation was catalyzed by metal sites using Co-and Ni-catalysts supported with Al-MCM-41 at 400 °C under atmospheric pressure [34]. Cyclopentanone formation occurred during HDO of guaiacol over Pt/C catalyst at 300 °C under …”

Section: Different Reactions and Their Thermodynamic Feasibility In Hmentioning

confidence: 99%

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Hydrodeoxygenation of Lignin-Derived Phenols: From Fundamental Studies towards Industrial Applications

Mäki‐Arvela

Murzin

2017

Catalysts

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Hydrodeoxygenation (HDO) of bio-oils, lignin and their model compounds is summarized in this review. The main emphasis is put on elucidating the reaction network, catalyst stability and time-on-stream behavior, in order to better understand the prerequisite for industrial utilization of biomass in HDO to produce fuels and chemicals. The results have shown that more oxygenated feedstock, selection of temperature and pressure as well as presence of certain catalyst poisons or co-feed have a prominent role in the HDO of real biomass. Theoretical considerations, such as density function theory (DFT) calculations, were also considered, giving scientific background for the further development of HDO of real biomass.

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Section: Kinetic Studies Elucidating the Reaction Pathways During Hdomentioning

confidence: 50%

Section: Different Reactions and Their Thermodynamic Feasibility In Hmentioning

confidence: 84%

Section: Different Reactions and Their Thermodynamic Feasibility In Hmentioning

confidence: 99%

Section: Different Reactions and Their Thermodynamic Feasibility In Hmentioning

confidence: 99%

See 2 more Smart Citations

Hydrodeoxygenation of Lignin-Derived Phenols: From Fundamental Studies towards Industrial Applications

Mäki‐Arvela

Murzin

2017

Catalysts

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“…Alumina acidic support was deactivated faster than inert supports such as SiO 2 due to its relatively high acidity and strong interaction with the coke precursors [117,148]. A high density of Brønsted acid sites resulted in condensation of precursors adsorbed on adjacent sites and faster coke formation [149].…”

Section: Catalyst Deactivation In Bio-oil Hdomentioning

confidence: 99%

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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BTX from Lignin

Gong¹

2023

Industrial Arene Chemistry

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Vapor-phase hydrodeoxygenation of guaiacol on Al-MCM-41 supported Ni and Co catalysts

Cited by 123 publications

References 47 publications

Hydrodeoxygenation of Lignin-Derived Phenols: From Fundamental Studies towards Industrial Applications

Hydrodeoxygenation of Lignin-Derived Phenols: From Fundamental Studies towards Industrial Applications

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

BTX from Lignin

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