Palladium-Nafion SAC-13 catalysed depolymerisation of lignin to phenols in formic acid and water

Liguori, Lucia; Barth, Tanja

doi:10.1016/j.jaap.2011.09.004

Cited by 89 publications

(48 citation statements)

References 25 publications

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“…Methoxyphenol, catechol, and phenol were the major components when the reaction temperature was raised from 360 to 400 ∘ C. The maximum yields occurred at reaction time below 200 minutes. Other attempts were carried out using acid/ethanol solution system but associated with metallic catalyst enhancers [23,24]. These researches were summarized in the section of metallic catalyzed lignin depolymerization.…”

Section: Acid-catalyzed Lignin Depolymerizationmentioning

confidence: 99%

“…An obvious increase of the guaiacol derivatives yield was observed in presence of metallic enhancer. Another attempt of optimizing the formic acidcatalyzed system was carried out by Liguori and Barth [24]. Pd catalyst and Nafion SAC-13 were used in treatment of both lignin mode compounds and spruce dry lignin pretreated by different methods in water medium at 300 ∘ C. Guaiacol, pyrocatechol, and resorcinol were isolated, but the yields were all lower than 5 wt.%.…”

Section: Metallic Catalyzed Lignin Depolymerizationmentioning

confidence: 99%

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Recent Development in Chemical Depolymerization of Lignin: A Review

Wang

Tucker

Yun

2013

Journal of Applied Chemistry

215

110

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This article reviewed recent development of chemical depolymerization of lignins. There were five types of treatment discussed, including base-catalyzed, acid-catalyzed, metallic catalyzed, ionic liquids-assisted, and supercritical fluids-assisted lignin depolymerizations. The methods employed in this research were described, and the important results were marked. Generally, base-catalyzed and acid-catalyzed methods were straightforward, but the selectivity was low. The severe reaction conditions (high pressure, high temperature, and extreme pH) resulted in requirement of specially designed reactors, which led to high costs of facility and handling. Ionic liquids, and supercritical fluids-assisted lignin depolymerizations had high selectivity, but the high costs of ionic liquids recycling and supercritical fluid facility limited their applications on commercial scale biomass treatment. Metallic catalyzed depolymerization had great advantages because of its high selectivity to certain monomeric compounds and much milder reaction condition than base-catalyzed or acid-catalyzed depolymerizations. It would be a great contribution to lignin conversion if appropriate catalysts were synthesized.

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Section: Acid-catalyzed Lignin Depolymerizationmentioning

confidence: 99%

Section: Metallic Catalyzed Lignin Depolymerizationmentioning

confidence: 99%

Recent Development in Chemical Depolymerization of Lignin: A Review

Wang

Tucker

Yun

2013

Journal of Applied Chemistry

215

110

View full text Add to dashboard Cite

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“…The molar H/C ratio of the product oil ranged between 1.3 and 1.8, and the O/C ratio between 0.05 and 0.1, indicative for a substantial reduction in the oxygen content. Recent research by Liguori et al showed that the reaction times and temperature can be reduced dramatically when using a heterogeneous catalyst (Pd/C) in water (Table 1) [19]. Major products were guaiacols (4.6% mass on lignin intake) and catechols (4.7% mass on lignin intake).…”

Section: Introductionmentioning

confidence: 99%

Catalytic hydrodeoxygenation and hydrocracking of Alcell ® lignin in alcohol/formic acid mixtures using a Ru/C catalyst

Kloekhorst

Shen

Yie

et al. 2015

Biomass and Bioenergy

106

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“…Using these mixtures improves the lignin solubility and may prevent cross-linking reactions [60]. Thus, water-phenol [66][67][68], water-ethanol [69][70][71], water-acetone [72], and water-formic acid [73] mixtures were used. 50/50 (v/v) water-ethanol co-solvent was proven to be the most effective solvent mixture for degradation of the lignin in terms of yield.…”

Section: Hydrothermal Processing (In Water)mentioning

confidence: 99%

Thermochemical Conversion of Lignin for Fuels and Chemicals: A Review

Joffres

Laurenti

Charon

et al. 2013

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Re´sume´-Conversion thermochimique de la lignine en carburants et produits chimiques : une revue -La lignine est une des composantes de la biomasse lignocellulosique potentiellement valorisable comme ressource renouvelable pour la production de carburants ou de produits chimiques. Apre`s se´paration de la matrice lignocellulosique, cette macromole´cule est de nos jours essentiellement utilise´e comme combustible dans l'industrie papetie`re. Outre cette filie`re papetie`re, la production d'e´thanol de seconde ge´ne´ration a`partir de la cellulose aura comme conse´quence la mise a`disponibilite´d'encore plus grandes quantite´s de lignine. De nouvelles applications pourront donc eˆtre propose´es pour l'utilisation de cette bio-ressource. Les diffe´rentes voies thermochimiques : pyrolyse, solvolyse, conversion hydrothermale et hydroconversion envisage´es pour la valorisation de la lignine sont de´crites dans cet article.Abstract -Thermochemical Conversion of Lignin for Fuels and Chemicals: A Review -Lignin is one of the biomass components potentially usable as renewable resource to produce fuels or chemicals. After separation from the lignocellulosic matrix, this macromolecule is nowadays essentially valorized by combustion in paper mills. If second generation ethanol is produced in the future from lignocellulosic biomass, some increasing reserves of lignin will be available in addition to the ones coming from the paper industry. The main thermochemical ways such as pyrolysis, solvolysis, hydrothermal conversion and hydroconversion considered for the valorization of the lignin are reviewed in this article.

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Palladium-Nafion SAC-13 catalysed depolymerisation of lignin to phenols in formic acid and water

Cited by 89 publications

References 25 publications

Recent Development in Chemical Depolymerization of Lignin: A Review

Recent Development in Chemical Depolymerization of Lignin: A Review

Catalytic hydrodeoxygenation and hydrocracking of Alcell ® lignin in alcohol/formic acid mixtures using a Ru/C catalyst

Thermochemical Conversion of Lignin for Fuels and Chemicals: A Review

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