Hydrodeoxygenation of guaiacol with CoMo catalysts. Part I: Promoting effect of cobalt on HDO selectivity and activity

Bui, Van Ngoc; Laurenti, D.; Afanasiev, P.; Geantet, Christophe

doi:10.1016/j.apcatb.2010.10.025

Cited by 456 publications

(326 citation statements)

References 26 publications

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“…For guaiacol, which is one OF the most studied model molecule, containing both methoxy and hydroxyl group, it is possible to obtain complete conversion under either high temperatures [50] or at slightly lower temperatures under high hydrogen pressure ( Table 1, entry 1) [46]. However, in most of the cases lower conversion levels have been obtained [26,33,38,58].…”

Section: Conversion and Main Products In The Hdo Of Lignin-derived Momentioning

confidence: 96%

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: Conversion and Main Products In The Hdo Of Lignin-derived Momentioning

confidence: 96%

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

Mäki‐Arvela

Murzin

2017

Catalysts

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“…Bui et al investigated the effect of cobalt on MoS 2 catalyst during the conversion of guaiacol. With addition of cobalt, the direct deoxygenation pathway involved in guaiacol conversion was obviously enhanced compared to the non-promoted MoS 2 , resulting in higher selectivity of aromatic hydrocarbons [62]. Yoosuk et al compared the HDO activities of MoS 2 , NiMoS 2 and NiS 2 using phenol as a model substrate.…”

Section: Transition Metal Sulfide Catalystsmentioning

confidence: 99%

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

et al. 2017

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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.

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“…In recent years, the catalytic behaviors of metals [5], nitrides [6] and sulfides [7,8,9,10,11,12,13] for the conversion of guaiacol have been studied. Bui et al [13] studied the effect of support of MoS 2 catalysts on the activity and selectivity of the HDO of guaiacol.…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF MO CONTENT IN MO(X)/γ-AL2O3 CATALYSTS OVER THE CONVERSION OF 2-METHOXYPHENOL AS LIGNIN-DERIVATES COMPONENTS

Leiva¹,

Sepúlveda²,

Garcı́a³

et al. 2013

J. Chil. Chem. Soc.

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The effect of Mo loading (10, 12, 15, 17 and 20 wt.%) on the physicochemical properties and reactivities of Mo(x)/g-Al 2 O 3 sulfide catalysts for the conversion of 2-methoxyphenol at 573 K and 5 MPa of hydrogen pressure were studied. The catalysts were characterized by specific area (S BET ), electrophoretic migration (EM), X-ray photoelectron spectroscopy (XPS) and surface acidity techniques. The highest conversion observed for the catalyst with a Mo loading of 15 wt.% was attributed to an increase in the number of active sites due to highly dispersed Mo species. At higher Mo loadings, the formation of Mo aggregates led to lower guaiacol conversion. The differences in the phenol/catechol ratio were explained by the acid strengths of the sulfided catalysts.

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Hydrodeoxygenation of guaiacol with CoMo catalysts. Part I: Promoting effect of cobalt on HDO selectivity and activity

Cited by 456 publications

References 26 publications

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

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

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

EFFECT OF MO CONTENT IN MO(X)/γ-AL2O3 CATALYSTS OVER THE CONVERSION OF 2-METHOXYPHENOL AS LIGNIN-DERIVATES COMPONENTS

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Hydrodeoxygenation of guaiacol with CoMo catalysts. Part I: Promoting effect of cobalt on HDO selectivity and activity

Cited by 456 publications

References 26 publications

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

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

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

EFFECT OF MO CONTENT IN MO(X)/&#947;-AL2O3 CATALYSTS OVER THE CONVERSION OF 2-METHOXYPHENOL AS LIGNIN-DERIVATES COMPONENTS

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EFFECT OF MO CONTENT IN MO(X)/γ-AL2O3 CATALYSTS OVER THE CONVERSION OF 2-METHOXYPHENOL AS LIGNIN-DERIVATES COMPONENTS