Aldol condensation of furfural and acetone on zeolites

Kikhtyanin, Oleg; Kelbichová, Vendula; Vitvarová, Dana; Kubů, Martin; Kubička, David

doi:10.1016/j.cattod.2013.10.059

Cited by 129 publications

(108 citation statements)

References 18 publications

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“…Their catalytic properties can be restored completely after calcination above 500°C. 126 As a comparison also the performance of MgO-ZrO 2 is given in Table 3. The selectivity to the C8 component 4-(2-furyl)-3-buten-2-one (46%) is lower than the selectivity to the C13 component difurfurylideneactone (57%).…”

Section: Aldol Condensationmentioning

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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Section: Aldol Condensationmentioning

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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“…The presence of strong basicity in calcined Mg-Al mixed oxides was confirmed by CO 2 -TPD (see above). Previously we have shown [14] that zeolites can also be used as acid catalysts for aldol condensation. Indeed, Fig.…”

Section: Tablementioning

confidence: 99%

“…FAc-OH, as the initial product of aldol condensation, was easily dehydrated in the presence of strong acid centers of H-BEA to form FAc with selectivity exceeding 80%. According to [14,19], the presence (FAc) 2 , which is formed by the dimerization of FAc, is a distinctive feature of aldol condensation of furfural with acetone in the presence of acidic catalysts. Characterization of the TiO 2 materials by the TPD method using NH 3 and CO 2 indicated that these solids exhibited amphoteric character, i.e.…”

Section: Tablementioning

confidence: 99%

“…In addition, solid catalysts with acid-base character are recognized as a promising alternative to homogeneous catalysts for aldol condensation of furfural with acetone. Among solid catalysts, double layered hydroxides (hydrotalcites) with basic character are considered as the most promising catalysts for this reaction [8,[11][12][13][14][15]. The essential disadvantages of such basic catalysts are their high sensitivity to ambient CO 2 , which transforms them into catalytically inactive carbonates, and the lack of reliable methods for recovering their catalytic properties after regeneration [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Nanosized TiO2—A promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading

et al. 2016

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a b s t r a c t Nanosized TiO 2 catalyst was successfully prepared by a simple green procedure and used in liquid phase aldol condensation of furfural with acetone, a key step in bio-fuel processing. In order to determine the effect of calcination temperature on catalytic properties of TiO 2 , the as-prepared TiO 2 and calcined TiO 2 (150-900• C) were studied by XRD, BET, TPD-CO 2 /NH 3 , TGA/DTG and FTIR evaluation. The catalytic performance of TiO 2 samples in aldol condensation of furfural with acetone was evaluated and compared with that of Mg-Al hydrotalcites and a BEA zeolite. These experiments showed that uncalcined TiO 2 possessed reasonable activity in aldol condensation of furfural to acetone and resulted in commonly produced condensation products. The observed catalytic behavior of TiO 2 could be competitive with that reported for other inorganic solids. The calcination of TiO 2 resulted, however, in a decrease in its catalytic activity due to extensive dehydration and surface dehydroxylation as well as due to changes of textural properties resulting in a decrease in the amount of accessible active sites. Thanks to its advanced properties, nanosized TiO 2 is a promising catalyst for aldol condensation of furfural with acetone and could broaden possibilities for optimizing conditions for bio-fuel production.

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“…The furfural-acetone aldol condensation was mainly catalyzed by basic materials, but there are some references proposing the use of acid catalysts, mainly zeolites, with good results [110][111][112]. Regarding the aldolization catalyzed by basic sites, this reaction was studied using homogeneous and heterogeneous catalysts.…”

Section: Aldehyde Condensation Catalysts and Reaction Mechanismsmentioning

confidence: 99%

Base-Catalyzed Reactions in Biomass Conversion: Reaction Mechanisms and Catalyst Deactivation

Faba

Dı́az

Ordóñez

2016

Green Chemistry and Sustainable Technology

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Although less studied than acid-catalyzed reactions, mainly because of their marginal interest in petrochemical processes, base-catalyzed reactions (either homogeneous or heterogeneous) play a key role in the upgrading of biomass-derived platform molecules. As in most of the chemical processes, the replacement of homogeneous catalysts by heterogeneous catalysts is of key interest. This article reviews the state of the art in the most important base-catalyzed reactions in the biofuel manufacture (biodiesel from triglycerides) and the upgrading of biomass-derived platform molecules (such as acetone, ethanol, furfural, 5-hydroxymethylfurfural, or acetic acid). Transesterification reactions, aldol condensation (alone or in combination with other reactions), and ketonization are the main reactions involved in these biorefinery processes. Reviewed are the most common catalysts proposed for these reactions (mainly heterogeneous), as well as the proposed mechanisms for these reactions, and the main factors governing catalyst deactivation when used in each of these reactions.

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Aldol condensation of furfural and acetone on zeolites

Cited by 129 publications

References 18 publications

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

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

Nanosized TiO2—A promising catalyst for the aldol condensation of furfural with acetone in biomass upgrading

Base-Catalyzed Reactions in Biomass Conversion: Reaction Mechanisms and Catalyst Deactivation

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