Insights into the activity, selectivity and stability of heterogeneous catalysts in the continuous flow hydroconversion of furfural

Garcia-Olmo, Antonio J.; Yepez, Alfonso; Balu, Alina M.; Romero, Antonio A.; Li, Yingwei; Luque, Rafael

doi:10.1039/c6cy00249h

Cited by 45 publications

(54 citation statements)

References 27 publications

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“…[25] Over six consecutivec ycles, Zr-FDCA-T could be simply recovered by washing with dimethyl formamide (DMF) and ethanol, and remained capable of producing FFAi ny ields of 91-96% at almost complete FUR conversion under the optimized reaction conditions ( Figure S9). [25] Over six consecutivec ycles, Zr-FDCA-T could be simply recovered by washing with dimethyl formamide (DMF) and ethanol, and remained capable of producing FFAi ny ields of 91-96% at almost complete FUR conversion under the optimized reaction conditions ( Figure S9).…”

Section: Effecto Fr Eaction Temperature and Time On Cth Of Furmentioning

confidence: 99%

Porous Zirconium–Furandicarboxylate Microspheres for Efficient Redox Conversion of Biofuranics

Li¹,

Liu²,

Yang³

et al. 2017

ChemSusChem

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Biofuranic compounds, typically derived from C and C carbohydrates, have been extensively studied as promising alternatives to chemicals based on fossil resources. The present work reports the simple assembly of biobased 2,5-furandicarboxylic acid (FDCA) with different metal ions to prepare a range of metal-FDCA hybrids under hydrothermal conditions. The hybrid materials were demonstrated to have porous structure and acid-base bifunctionality. Zr-FDCA-T, in particular, showed a microspheric structure, high thermostability (ca. 400 °C), average pore diameters of approximately 4.7 nm, large density, moderate strength of Lewis-base/acid centers (ca. 1.4 mmol g ), and a small number of Brønsted-acid sites. This material afforded almost quantitative yields of biofuranic alcohols from the corresponding aldehydes under mild conditions through catalytic transfer hydrogenation (CTH). Isotopic H NMR spectroscopy and kinetic studies verified that direct hydride transfer was the dominant pathway and rate-determining step of the CTH. Importantly, the Zr-FDCA-T microspheres could be recycled with no decrease in catalytic performance and little leaching of active sites. Moreover, good yields of C (i.e., furfural) or C products [i.e., maleic acid and 2(5H)-furanone] could be obtained from furfuryl alcohol without oxidation of the furan ring over these metal-FDCA hybrids. The content and ratio of Lewis-acid/base sites were demonstrated to dominantly affect the catalytic performance of these redox reactions.

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Section: Effecto Fr Eaction Temperature and Time On Cth Of Furmentioning

confidence: 99%

Porous Zirconium–Furandicarboxylate Microspheres for Efficient Redox Conversion of Biofuranics

Li¹,

Liu²,

Yang³

et al. 2017

ChemSusChem

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“…Only few studies reported high selectivity to 2-methylfuran (MF). [10,13,18,24,25] Molecular hydrogen (H 2 ) is mostly used as the reductant for catalytic furfural hydrogenation. MF has shown superior performance as an additive in gasoline fuels compared to other furfural hydrogenation products.…”

Section: Introductionmentioning

confidence: 99%

“…[12,18] The production of MF is attractive, as it has a very low boiling point which enables efficient separation. [8][9][10][11][12][13][14][15][21][22][23][24][25] The reduction by catalytic hydrogen transfer in various alcohols (ROH), however, is reported only in few cases. [19] The conversion to MF occurs via hydrogenolysis of the CÀO linkage in FA, which in general requires higher temperature and longer reaction time.…”

Section: Introductionmentioning

confidence: 99%

“…More neutral supports such as carbons were also used in some studies. [10,13,18,24,25] Molecular hydrogen (H 2 ) is mostly used as the reductant for catalytic furfural hydrogenation. [8][9][10][11][12][13][14][15][21][22][23][24][25] The reduction by catalytic hydrogen transfer in various alcohols (ROH), however, is reported only in few cases.…”

Section: Introductionmentioning

confidence: 99%

“…[10,13,18,24,25] Molecular hydrogen (H 2 ) is mostly used as the reductant for catalytic furfural hydrogenation. [8][9][10][11][12][13][14][15][21][22][23][24][25] The reduction by catalytic hydrogen transfer in various alcohols (ROH), however, is reported only in few cases. [17,18,20] The latter is attractive, not only from the techno-economic point of view, but also because the interphase transfer is improved (solid/liquid for ROH vs. solid/liquid/gas for H 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Batch versus Continuous Flow Performance of Supported Mono‐ and Bimetallic Nickel Catalysts for Catalytic Transfer Hydrogenation of Furfural in Isopropanol

et al. 2018

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Furfural takes an important position in hemicelluloses biorefinery platforms. It can be converted into a wide range of chemicals. One important valorization route is the catalytic hydrogenation. Whereas molecular hydrogen is mostly used in industrial hydrogenation processes, recent studies also showed that alcohols can be used as reductants from which hydrides can be transferred catalytically to furfural. This process is often assisted by the formation of significant amounts of side products, in despite of high yields to the hydrogenolysis product 2-methylfuran. The present work explores the catalytic behavior in batch and continuous flow of mono-and bimetallic nickel catalysts supported on activated carbon for the catalytic transfer hydrogenation of furfural in isopropanol.

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Hydrogenation reactions catalyzed by colloidal palladium nanoparticles under flow regime

et al. 2019

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A glycerol colloidal solution of palladium nanoparticles stabilized by PVP (PdPVP, mean diameter of 2.2 ± 0.8 × 10 −9 m) was employed under flow conditions for hydrogenation reactions. After optimization, we selected the tube-in-tube flow reactor as the more suitable system for this catalytic process due to its ability to regulate the addition of hydrogen. PdPVP nanoparticles were synthesized and fully characterized ((HR)-TEM, PXRD, EA, and ICP) both in glycerol solution and at solid state. The reduction of different substrates, including nitrobenzene, 4-phenylbut-3-en-2-one, and isophorone, was achieved under relatively smooth conditions (5-7 × 10 5 Pa of H 2) in short times (<600 s). Unfortunately, the reduction of 1-dodecene was not possible due to the faster isomerization reaction. The optimal effusion of hydrogen in the colloidal phase together with the catalytic efficiency of this system is noteworthy.

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Insights into the activity, selectivity and stability of heterogeneous catalysts in the continuous flow hydroconversion of furfural

Abstract: The continuous flow hydroconversion of furfural to a range of furanic derivatives was carried out using a range of metal-containing heterogeneous catalysts in order to provide insights into the reaction pathways for the hydrogenation of furfural.

Cited by 45 publications

References 27 publications

Porous Zirconium–Furandicarboxylate Microspheres for Efficient Redox Conversion of Biofuranics

Porous Zirconium–Furandicarboxylate Microspheres for Efficient Redox Conversion of Biofuranics

Batch versus Continuous Flow Performance of Supported Mono‐ and Bimetallic Nickel Catalysts for Catalytic Transfer Hydrogenation of Furfural in Isopropanol

Hydrogenation reactions catalyzed by colloidal palladium nanoparticles under flow regime

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