Catalytic Conversion of Ethanol into an Advanced Biofuel: Unprecedented Selectivity for <i>n</i>‐Butanol

Dowson, George; Haddow, Mairi F.; Lee, Jason; Wingad, Richard L.; Wass, Duncan F.

doi:10.1002/anie.201303723

Cited by 198 publications

(137 citation statements)

References 25 publications

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“…47,48 The potential importance of Guerbet chemistry in bio-renewable transformations has been underlined recently, as a method of transforming bio-ethanol to bio-butanol. 56 The application of ionic liquid solvents and alteration of the concentration of amine were later shown to enable control over the reaction selectivity.…”

mentioning

confidence: 99%

Combining bio- and chemo-catalysis for the conversion of bio-renewable alcohols: homogeneous iridium catalysed hydrogen transfer initiated dehydration of 1,3-propanediol to aldehydes

et al. 2016

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Abstract.Combining whole cell biocatalysis and chemocatalysis in a single reaction sequence avoids unnecessary separations, and the associated waste and energy consumption. Bacterial fermentation has been employed to convert waste glycerol from biodiesel production into 1,3-propanediol. This 1,3-propanediol can be extracted selectively from the aqueous fermentation broth using ionic liquids. 1,3-propanediol in ionic liquid solution was converted to propionaldehyde by hydrogen transfer initiated dehydration (HTID) catalysed by a Cp*IrCl 2 (NHC) (Cp* = pentamethylcyclopentadienyl; NHC = carbene ligand) complex. The use of an ionic liquid solvent enabled the reaction to be performed under reduced pressure, facilitating the isolation of the product, and improving the reaction selectivity. The Ir(III) catalyst in ionic liquid was found to be highly recyclable.Introduction.

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confidence: 99%

Combining bio- and chemo-catalysis for the conversion of bio-renewable alcohols: homogeneous iridium catalysed hydrogen transfer initiated dehydration of 1,3-propanediol to aldehydes

et al. 2016

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“…Many publications focus on the Guerbet selfcondensation of ethanol for the production of n-butanol and higher alcohols. [65][66][67][68][69][70][71][72][73][74][75][76][77][78] Just like ethanol, n-butanol can be used as a renewable fuel, yet in comparison with ethanol, it has a higher energy density, a lower volatility and a lower propensity to absorb water. Methanol on the other hand lacks a second carbon atom and cannot self-condensate by Guerbet condensation.…”

mentioning

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.

239

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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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“…In fact, butanol can be produced from bio-ethanol, via the Guerbet process, where higher alcohols can be formed, upon condensation of two primary alcohols [68]. For this purpose, basic oxides, such as MgO and hydrotalcites have been active in ethanol conversion into butanol, reaching 85% selectivity [69]. N-butanol can also be produced through fermentation; several companies (e.g., Versalis -San Donato Milanese, Italy, Global Bioenergies -Evry, France) have already developed biochemical processes for the production of C 4 alcohols.…”

Section: Propylene (C3h6)mentioning

confidence: 99%

Olefins from Biomass Intermediates: A Review

2017

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Over the last decade, increasing demand for olefins and their valuable products has prompted research on novel processes and technologies for their selective production. As olefins are predominately dependent on fossil resources, their production is limited by the finite reserves and the associated economic and environmental concerns. The need for alternative routes for olefin production is imperative in order to meet the exceedingly high demand, worldwide. Biomass is considered a promising alternative feedstock that can be converted into the valuable olefins, among other chemicals and fuels. Through processes such as fermentation, gasification, cracking and deoxygenation, biomass derivatives can be effectively converted into C 2 -C 4 olefins. This short review focuses on the conversion of biomass-derived oxygenates into the most valuable olefins, e.g., ethylene, propylene, and butadiene.

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Catalytic Conversion of Ethanol into an Advanced Biofuel: Unprecedented Selectivity for n‐Butanol

Cited by 198 publications

References 25 publications

Combining bio- and chemo-catalysis for the conversion of bio-renewable alcohols: homogeneous iridium catalysed hydrogen transfer initiated dehydration of 1,3-propanediol to aldehydes

Combining bio- and chemo-catalysis for the conversion of bio-renewable alcohols: homogeneous iridium catalysed hydrogen transfer initiated dehydration of 1,3-propanediol to aldehydes

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

Olefins from Biomass Intermediates: A Review

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