Direct catalytic conversion of cellulose to liquid straight-chain alkanes

Beeck, Beau Op de; Dusselier, Michiel; Geboers, Jan; Holsbeek, Jensen; Morré, Eline; Oswald, Steffen; Giebeler, Lars; Sels, Bert F.

doi:10.1039/c4ee01523a

Cited by 208 publications

(182 citation statements)

References 83 publications

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“…Dumesic and co-workers produced alkanes from aqueous-phase conversion of carbohydrates using Pt catalysts [7,8]. Alkanes can also be prepared from cellulose using IrARe and Ru catalysts [9,10]. Ru and Pt catalysts have been used for aqueous-phase hydrogenation of carbohydrates and organic acids [11][12][13].…”

Section: Introductionmentioning

confidence: 98%

Stabilizing cobalt catalysts for aqueous-phase reactions by strong metal-support interaction

Lee

Burt

Carrero

et al. 2015

Journal of Catalysis

115

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a b s t r a c tHigh-temperature calcination and reduction treatments of cobalt particles (17-20 nm) supported on TiO 2 create cobalt particles covered with a TiO y layer. The layer thickness ranges from 2.8 to 4.0 nm. These phenomena, commonly called strong metal-support interaction (SMSI), can be used to improve the catalyst stability and change the catalyst selectivity. For example, non-overcoated cobalt catalysts leached during aqueous-phase hydrogenation (APH) of furfuryl alcohol, losing 44.6% of the cobalt after 35 h time-on-stream. In contrast, TiO y -overcoated cobalt catalysts did not lose any measurable cobalt by leaching and the cobalt particle size remained constant after 105 h time-on-stream. The 1,5-pentanediol selectivity from furfuryl alcohol hydrogenolysis increased with increasing TiO y layer thickness. The stabilized cobalt catalyst also had high yields for APH of xylose to xylitol (99%) and APH of furfural to furfuryl alcohol (95%). These results show that the SMSI effect produces a catalyst with a similar structure as catalysts prepared by atomic layer deposition, thereby opening up a cheaper and more industrially relevant method of stabilizing base-metal catalysts for aqueous-phase biomass conversion reactions. In addition, the SMSI effect can be used to tune catalyst selectivity, thus allowing the more precise atomic scale design of supported metal catalysts.

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Section: Introductionmentioning

confidence: 98%

Stabilizing cobalt catalysts for aqueous-phase reactions by strong metal-support interaction

Lee

Burt

Carrero

et al. 2015

Journal of Catalysis

115

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“…The main constituents of raw lignocellulose are cellulose, hemi-cellulose, and lignin. While today many useful chemicals can be derived from (hemi-)cellulose, [2][3][4][5][6][7][8][9][10][11] the valorization of lignin is of high relevance as it is the only of the three types that comprises a substantial amount of aromatics (ca. 40 wt.% benzene units).…”

Section: Introductionmentioning

confidence: 99%

Alkylphenols to phenol and olefins by zeolite catalysis: a pathway to valorize raw and fossilized lignocellulose

2016

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Selective conversion of alkylphenols to phenol and olefins is presented as a challenging key step in upgrading raw and fossilized lignocellulose. An exceptional and stable dealkylation performance is achieved by application of an acidic ZSM-5 zeolite, in which co-feeding of water is crucial to maintain catalytic activity. The role of water is attributed to competitive adsorption of water and phenol. The lignin-first pathway towards phenol yields a tenfold of phenol compared to the stateof-the-art single-step lignocellullosic depolymerization techniques.

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“…Two recent publications report the chemocatalytic conversion of cellulosic biomass to hexane and hexanols. 57,58 These hexanols are identified as intermediates in the reaction pathway to hexane, with n-hexanol being the most stable isomer. Thus, careful tuning of reaction conditions and catalyst composition can facilitate the selective formation of n-hexanol and other C 6 alcohols, opening up an interesting route to bio-based hexanol.…”

Section: -36mentioning

confidence: 99%

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization

Gabriëls

Hernández

Sels

et al. 2015

Catal. Sci. Technol.

243

233

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The Guerbet condensation reaction is an alcohol coupling reaction that has been known for more than a century. Because of the increasing availability of bio-based alcohol feedstock, this reaction is of growing importance and interest in terms of value chains of renewable chemical and biofuel production. Due to the specific branching pattern of the alcohol products, the Guerbet reaction has many interesting applications. In comparison to their linear isomers, branched-chain Guerbet alcohols have extremely low melting points and excellent fluidity. This review provides thermodynamic insights and unravels the various mechanistic steps involved. A comprehensive overview of the homogeneous, heterogeneous and combined homogeneous and heterogeneous catalytic systems described in published reports and patents is also given. Technological considerations, challenges and perspectives for the Guerbet chemistry are discussed.

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Direct catalytic conversion of cellulose to liquid straight-chain alkanes

Abstract: A novel one-pot catalytic approach is presented that is able to directly transform cellulose into straight-chain alkanes (mainly n-hexane).

Cited by 208 publications

References 83 publications

Stabilizing cobalt catalysts for aqueous-phase reactions by strong metal-support interaction

Stabilizing cobalt catalysts for aqueous-phase reactions by strong metal-support interaction

Alkylphenols to phenol and olefins by zeolite catalysis: a pathway to valorize raw and fossilized lignocellulose

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization

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