Continuous liquid-phase valorization of bio-ethanol towards bio-butanol over metal modified alumina

Riittonen, Toni; Eränen, Kari; Mäki‐Arvela, Päivi; Shchukarev, Andrey; Rautio, Anne-Riikka; Kordás, Krisztián; Kumar, Narendra; Salmi, Tapio; Mikkola, Jyri‐Pekka

doi:10.1016/j.renene.2014.08.052

Cited by 52 publications

(47 citation statements)

References 66 publications

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“…Research shows that ethanol can be used up to 85% (v/v) in vehicles without major modifications (Balat et al, 2008). Although, novel biochemical, thermo-catalytic, and hybrid routes are being developed to produce drop-in fuels and fuel additives to meet the infrastructure and other requirements (Huber et Figure 1 shows that ethanol derived from cellulosic biomass can also be used to produce other fuel candidates such as butanol, gasoline, hydrogen, diesel, and others (Whitcraft et al, 1983;Costa et al, 1985;Deluga et al, 2004;Narula et al, 2015;Riittonen et al, 2015). Moreover, ethanol can also serve as a precursor for several other chemicals and intermediates that are currently derived from non-renewable resources (Angelici et al, 2013;Sun and Wang, 2014).…”

Section: Why Ethanol?mentioning

confidence: 99%

Recent updates on lignocellulosic biomass derived ethanol - A review

et al. 2016

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HIGHLIGHTSCellulosic biomass is the only source for sustainable fuels.Ethanol is a promising fuel candidate for near/long term applications.Ethanol can also serve as a precursor for other fuels and chemicals.However, processing cost for 2G ethanol is still high.Thus, urgent research efforts are needed to bring the cost down. Lignocellulosic (or cellulosic) biomass derived ethanol is the most promising near/long term fuel candidate. In addition, cellulosic biomass derived ethanol may serve a precursor to other fuels and chemicals that are currently derived from unsustainable sources and/or are proposed to be derived from cellulosic biomass. However, the processing cost for second generation ethanol is still high to make the process commercially profitable and replicable. In this review, recent trends in cellulosic biomass ethanol derived via biochemical route are reviewed with main focus on current research efforts that are being undertaken to realize high product yields/titers and bring the overall cost down. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT

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Section: Why Ethanol?mentioning

confidence: 99%

Recent updates on lignocellulosic biomass derived ethanol - A review

et al. 2016

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“…The highest butanol yields were obtained with the Pd-containing mixed oxide, which also exhibited remarkable catalyst stability. Recently, Riittonen et al 214 used Cu, Ni or Co deposited on a commercial mixed aluminum oxide as heterogeneous catalysts for the condensation of bio-ethanol to C 4 hydrocarbons. The different metals were found to yield significantly different product distributions.…”

Section: Hydrogen-transfer Processesmentioning

confidence: 99%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

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Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase. Among these processes, the valorization/upgrading of lignocellulosic biomass and derived molecules have attracted enormous attention because it constitutes a pivotal axis in the transition from an economic model based on fossil resources to one based on renewable biomass resources with preference for biomass waste streams. Proof of this is the increasing amount of literature reports regarding the rational design and implementation of LDHs and related materials in catalytic processes such as: depolymerization, hydrogenation, selective oxidations, and C-C coupling reactions, among others, where biomass-derived compounds are used. The major aim of this contribution is to situate the most recent advances on the implementation of these types of catalysts into a lignocellulosic-feedstock biorefinery scheme, highlighting the versatility of LDHs and derived materials as multifunctional, tunable, cheap and easy to produce heterogeneous catalysts.

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“…1, 8,10,12,[15][16][17][18][19][20][21][22][23][24][25][26][27][28] Others have used ethanol as a limiting reagent with methanol and/or propanol to attain moderate to high ethanol conversion. 3,7,22,29,30 Catalyst composition is the most important factor in higher alcohol yields -many studies used MgO in pure form or mixed with other basic oxides as a solid base catalyst for this reaction.…”

Section: Introductionmentioning

confidence: 99%

Condensed-Phase Ethanol Conversion to Higher Alcohols

Jordison

Lira

Miller

2015

Ind. Eng. Chem. Res.

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Higher alcohols (C 4 +) can be formed from ethanol via condensation pathways collectively known as Guerbet reactions. Most prior Guerbet reaction studies involve vapor phase reactions, with n-butanol yields typically no higher than 30% of theoretical. We report here condensed-phase Guerbet reactions of ethanol over Ni/γ-Al 2 O 3 catalysts modified by La 2 O 3 .Higher alcohol selectivities in excess of 80% at 230 o C and autogeneous pressures are obtained in batch autoclave reactions. At these conditions, which are near the critical temperature of ethanol, the liquid phase is significantly expanded, byproduct gases (CH 4 and CO 2 ) are significantly dissolved in the liquid phase, and the vapor phase contains significant quantities of alcohols. To accurately compute ethanol conversion and product yields, both composition and quantity of each phase present at reaction conditions must be determined. To do this, the S-R Polar equation of state is combined with chromatographic analysis of liquid phase samples taken during reaction to model the phase equilibrium in the reactor at reaction conditions. Composition, density, and total number of moles of the vapor and liquid phases in the reactor are determined from the model and analysis, and are used to calculate more accurate values of conversion and product yield than those calculated by liquid phase samples alone.

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Continuous liquid-phase valorization of bio-ethanol towards bio-butanol over metal modified alumina

Cited by 52 publications

References 66 publications

Recent updates on lignocellulosic biomass derived ethanol - A review

Recent updates on lignocellulosic biomass derived ethanol - A review

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Condensed-Phase Ethanol Conversion to Higher Alcohols

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