Efficient catalytic transfer hydrogenation of furfural to furfuryl alcohol in near-critical isopropanol over Cu/MgO-Al2O3 catalyst

Chen, Hao; Ruan, Houhang; Lu, Xiangnan; Fu, Jie; Langrish, T.A.G.; Lü, Xiuyang

doi:10.1016/j.mcat.2017.11.011

Cited by 87 publications

(41 citation statements)

References 30 publications

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“…Up to date, the studies on CTH of F over hydrotalcite derived catalysts focused on employment of reduced Cu‐based catalysts because the preferred adsorption model of F on metallic Cu favours the unique hydrogenation of the carbonyl group . Zhang et al .…”

Section: Resultsmentioning

confidence: 99%

“…Thus, Zhang et al . reported the production of FA (94 % yield) over CuO−Al 2 O 3 using methanol as hydrogen donor at 200 °C, whereas Cu−MgO−Al 2 O 3 and Cu−Ni/Al 2 O 3 catalysts (whose activation involved hydrogen reduction steps) were also used for CTH of F in 2‐propanol obtaining FA yields over 60 % …”

Section: Figurementioning

confidence: 99%

“…Thus, Zhang et al reported the production of FA (94 % yield) over CuOÀ Al 2 O 3 using methanol as hydrogen donor at 200°C, [11] whereas CuÀ MgOÀ Al 2 O 3 and CuÀ Ni/Al 2 O 3 catalysts (whose activation involved hydrogen reduction steps) were also used for CTH of F in 2-propanol obtaining FA yields over 60 %. [12,13,14] The effective performance of these hydrotalcite-derived Cubased catalysts is based on their ability to accommodate high Cu loadings homogenously dispersed in a mesoporous network and with a good thermal stability. [15] The synergetic effects between the Cu and the oxide phases generate Lewis acid-base active sites, which promote CTH reactions.…”

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confidence: 99%

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Catalytic Transfer Hydrogenation of Furfural over Co₃O₄−Al₂O₃ Hydrotalcite‐derived Catalyst

et al. 2020

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The hydrogenation of furfural by catalytic hydrogen transfer to produce furfuryl alcohol has been investigated over a series of mixed oxides derived from hydrotalcite catalysts. Three different catalysts containing Ni, Co and Zn phases on an Al‐rich amorphous support were synthesized and characterised. The catalytic performances were evaluated in a batch stirred reactor using 2‐propanol as a solvent and hydrogen donor, with Co3O4−Al2O3 showing the highest activity and selectivity to FA (74 % yield; 97 % selectivity). The effects of temperature (T=120–180 °C) and reaction time (t=30 min–24 h) were also studied, reaching a FA maximum yield of 92 % at 150 °C after 24 h. The Co3O4−Al2O3 catalyst showed a loss of activity after the first run, which can be easily restored by a simple calcination treatment. The results establish a catalytic route to produce valuable furfuryl alcohol over 3d‐transition metal‐based catalysts without any external hydrogen supply.

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Section: Resultsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Catalytic Transfer Hydrogenation of Furfural over Co₃O₄−Al₂O₃ Hydrotalcite‐derived Catalyst

et al. 2020

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“…Lewis/Brønsted acid mediated metallic catalysts are very popular for furfural conversion. Lu and co‐workers also proposed a similar mechanism for CTH‐II of furfural to FAL over Cu/MgO−Al 2 O 3 catalysts (Figure ) . They correlated the Cu loading with surface acidity, and found that catalyst activity was proportional to surface acidity.…”

Section: Case Study C: Furfural Conversionmentioning

confidence: 99%

Catalytic Transfer Hydrogenation of Biomass‐Derived Substrates to Value‐Added Chemicals on Dual‐Function Catalysts: Opportunities and Challenges

et al. 2018

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Aqueous‐phase hydrodeoxygenation (APH) of bioderived feedstocks into useful chemical building blocks is one the most important processes for biomass conversion. However, several technological challenges, such as elevated reaction temperature (220–280 °C), high H2 pressure (4–10 MPa), uncontrollable side reactions, and intensive capital investment, have resulted in a bottleneck for the further development of existing APH processes. Catalytic transfer hydrogenation (CTH) under much milder conditions with non‐fossil‐based H2 has attracted extensive interest as a result of several advantageous features, including high atom efficiency (≈100 %), low energy intensity, and green H2 obtained from renewable sources. Typically, CTH can be categorized as internal H2 transfer (sacrificing small amounts of feedstocks for H2 generation) and external H2 transfer from H2 donors (e.g., alcohols, formic acid). Although the last decade has witnessed a few successful applications of conventional APH technologies, CTH is still relatively new for biomass conversion. Very limited attempts have been made in both academia and industry. Understanding the fundamentals for precise control of catalyst structures is key for tunable dual functionality to combine simultaneous H2 generation and hydrogenation. Therefore, this Review focuses on the rational design of dual‐functionalized catalysts for synchronous H2 generation and hydrogenation of bio‐feedstocks into value‐added chemicals through CTH technologies. Most recent studies, published from 2015 to 2018, on the transformation of selected model compounds, including glycerol, xylitol, sorbitol, levulinic acid, hydroxymethylfurfural, furfural, cresol, phenol, and guaiacol, are critically reviewed herein. The relationship between the nanostructures of heterogeneous catalysts and the catalytic activity and selectivity for C−O, C−H, C−C, and O−H bond cleavage are discussed to provide insights into future designs for the atom‐economical conversion of biomass into fuels and chemicals.

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“…Solid materials such as nanoparticles of metal oxide metal, complexes, hydroxyapatite, Lewis acidic zeolites, were reported to catalyze the CTH of furfural. However, there are still some shortages for these catalysts, such as low efficiency, expensiveness, harsh reaction conditions and worse repeatability.…”

Section: Introductionmentioning

confidence: 99%

Porous Zirconium Hydroxyphosphonoacetate: Catalyst for Conversion of Furfural into Furfuryl Alcohol

Liu

et al. 2019

ChemistrySelect

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Catalytic transfer hydrogenation (CTH) of the C=O bond has been considered to be one of the most important processes for the synthesis of fuels and chemicals. In this study, zirconium hydroxyphosphonoacetate (Zr‐HPAA) was synthesized by solvent‐thermal method for the transfer hydrogenation of furfural (FF) to furfuryl alcohol. As expected, the Zr‐HPAA, which comprises P−O‐Zr and C−O‐Zr linkages, shows high activity for catalytic transfer hydrogenation of FF to FA. Besides, the effects of time, temperature, catalyst dosage and solvent on the reaction were investigated in detail, with FF conversion (98%) and FA yield (96%) at 150 °C in 1.5 h. The activation energy (Ea) of the reaction was calculated as 47.04 kJ/mol and the lower activation energy was associated to the high catalytic activity of Zr‐HPAA. It is easy to separate catalyst after the reaction and the catalyst exhibits high activity for at least five reaction cycles.

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Efficient catalytic transfer hydrogenation of furfural to furfuryl alcohol in near-critical isopropanol over Cu/MgO-Al2O3 catalyst

Cited by 87 publications

References 30 publications

Catalytic Transfer Hydrogenation of Furfural over Co₃O₄−Al₂O₃ Hydrotalcite‐derived Catalyst

Catalytic Transfer Hydrogenation of Furfural over Co₃O₄−Al₂O₃ Hydrotalcite‐derived Catalyst

Catalytic Transfer Hydrogenation of Biomass‐Derived Substrates to Value‐Added Chemicals on Dual‐Function Catalysts: Opportunities and Challenges

Porous Zirconium Hydroxyphosphonoacetate: Catalyst for Conversion of Furfural into Furfuryl Alcohol

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Efficient catalytic transfer hydrogenation of furfural to furfuryl alcohol in near-critical isopropanol over Cu/MgO-Al2O3 catalyst

Cited by 87 publications

References 30 publications

Catalytic Transfer Hydrogenation of Furfural over Co3O4−Al2O3 Hydrotalcite‐derived Catalyst

Catalytic Transfer Hydrogenation of Furfural over Co3O4−Al2O3 Hydrotalcite‐derived Catalyst

Catalytic Transfer Hydrogenation of Biomass‐Derived Substrates to Value‐Added Chemicals on Dual‐Function Catalysts: Opportunities and Challenges

Porous Zirconium Hydroxyphosphonoacetate: Catalyst for Conversion of Furfural into Furfuryl Alcohol

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Catalytic Transfer Hydrogenation of Furfural over Co₃O₄−Al₂O₃ Hydrotalcite‐derived Catalyst

Catalytic Transfer Hydrogenation of Furfural over Co₃O₄−Al₂O₃ Hydrotalcite‐derived Catalyst