One-pot cascade conversion of xylose to furfuryl alcohol over a bifunctional Cu/SBA-15-SO3H catalyst

Deng, Tianyu; Xu, Geyang; Fu, Yao

doi:10.1016/s1872-2067(19)63505-9

Cited by 38 publications

(22 citation statements)

References 43 publications

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“…[20] In another work, the one-pot cascade conversion of xylose to furfuryl alcohol over a Cu/SBA-15-SO3H catalyst was studied, and xylitol was a by-product of reaction (10% yield, against 62.6% for furfuryl alcohol). [21] More references are available about nickel, with commercial Raney ® Ni as the benchmark catalyst, and a high selectivity to xylitol has been reported. [9,[22][23][24][25] The hydrogenation of concentrated aqueous solutions of xylose (20-60 wt.%) has been extensively studied in batchtype reactors under 35-60 bar H2 in the temperature range 80-130 °C.…”

Section: Introductionmentioning

confidence: 99%

Selective aqueous phase hydrogenation of xylose to xylitol over SiO2-supported Ni and Ni-Fe catalysts: Benefits of promotion by Fe

Sadier

Shi

Mamède

et al. 2021

Applied Catalysis B: Environmental

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A monometallic Ni and a bimetallic Ni-Fe catalyst were used in the aqueous phase hydrogenation of xylose in batch conditions (T = 50 -150 °C, PH2 = 10 -30 bar, xylose mass fraction in water = 3.7 -11.0 wt.%) to evidence the benefits of promoting Ni by Fe. The activity of the catalysts increased with temperature, but a temperature of 80 °C allowed minimizing nickel leaching at full conversion. The presence of reduced Fe at the surface of the bimetallic nanoparticles increased both the first-order apparent rate constant and the adsorption constant of xylose. The catalytic activity of Ni/SiO2 strongly declined and no deactivation was found for the Ni-Fe catalyst. A restructuring of the bimetallic nanoparticles took place, as the size of the metal particles and the Fe proportion in the surface layers increased, suggesting a flattening and coalescing of the particles over the silica surface.

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Section: Introductionmentioning

confidence: 99%

Selective aqueous phase hydrogenation of xylose to xylitol over SiO2-supported Ni and Ni-Fe catalysts: Benefits of promotion by Fe

Sadier

Shi

Mamède

et al. 2021

Applied Catalysis B: Environmental

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“…Comparing the conversion results of xylose and the selectivity to furfural with the other catalysts in Table 8 , we found that the studied catalysts obtained good results using only water as a solvent in 120 min of reaction. In addition, the time of reaction for 18%Nb-DB was half of those in the two reported studies [ 50 , 51 ]. Under slightly different reaction conditions, Vieira et al [ 45 ] verified that the catalyst Nb 2 O 5 converted 96.8% of xylose with 42.1% selectivity for furfural.…”

Section: Resultsmentioning

confidence: 91%

“…Xylose conversion reactions using solvents, such as tetrahydrofuran (THF), dimethyl sulfoxide (DMSO), toluene, butanol, and γ-valerolactone (GVL), provide higher conversion and selectivity values [ 45 , 46 , 50 , 51 , 52 ]. Therefore, reactions carried out in a medium where only water is used as the solvent is a challenge.…”

Section: Resultsmentioning

confidence: 99%

Niobium on BEA Dealuminated Zeolite for High Selectivity Dehydration Reactions of Ethanol and Xylose into Diethyl Ether and Furfural

et al. 2020

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In this work, we investigated the role of solid-state dealumination by (NH4)2SiF6 (25% Al removal and 13% Si insertion), the impregnation of niobium (10, 18, and 25 wt. %) on dealuminated *BEA (DB) zeolite and their catalytic properties in ethanol and xylose transformations. Among all the studied catalysts, 18%Nb-DB showed increased mesoporosity and external areas. A leveling effect in the number and strength of the proposed two sites (Brønsted and Lewis) present in the catalyst (n1 = 0.24 mmol g−1, −ΔH1 = 49 kJ mol−1, and n2 = 0.20 mmol g−1, –ΔH2 = 42 kJ mol−1) in the catalyst 18%Nb-DB, might be responsible for its good activity. This catalyst presented the highest selectivity for diethyl ether, DEE (97%) with 61% conversion after 50 ethanol pulses at 230 °C (turnover number, TON DEE = 1.15). These features allowed catalytically fruitful bonding of the ethanol molecules to the neighboring sites on the channels, facilitating bimolecular ether formation through a possible SN2 mechanism. The same catalyst was active and selective for transformation of xylose at 180 °C, showing 64% conversion and 51% selectivity for furfural (TON Furfural = 24.7) using water as a green solvent.

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“…Deng et al [51] synthesized and employed a bifunctional Cu/SBA-15-SO 3 H catalyst to form FuOH from xylose in a one-pot catalytic system. The highest FuOH yield (63%) was obtained at 4 MPa, 140 • C and 6 h in a biphasic water/n-butanol solvent mixture at a total xylose conversion.…”

Section: Formation Of Furfuryl Alcohol From Xylose In One-pot Reactionsmentioning

confidence: 99%

Towards the Green Synthesis of Furfuryl Alcohol in A One-Pot System from Xylose: A Review

Millán

Sixta

2020

Catalysts

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In the pursuit of establishing a sustainable biobased economy, valorization of lignocellulosic biomass is increasing its value as a feedstock. Nevertheless, to achieve the integrated biorefinery paradigm, the selective fractionation of its complex matrix to its single constituents must be complete. This review presents and examines the novel catalytic pathways to form furfuryl alcohol (FuOH) from xylose in a one-pot system. This production concept takes on chemical, thermochemical and biochemical transformations or a combination of them. Still, the bulk of the research is targeted to develop heterogeneous catalytic systems to synthesize FuOH from furfural and xylose. The present review includes an overview of the economic aspects to produce this platform chemical in an industrial manner. In the last section of this review, an outlook and summary of catalytic processes to produce FuOH are highlighted.

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One-pot cascade conversion of xylose to furfuryl alcohol over a bifunctional Cu/SBA-15-SO3H catalyst

Cited by 38 publications

References 43 publications

Selective aqueous phase hydrogenation of xylose to xylitol over SiO2-supported Ni and Ni-Fe catalysts: Benefits of promotion by Fe

Selective aqueous phase hydrogenation of xylose to xylitol over SiO2-supported Ni and Ni-Fe catalysts: Benefits of promotion by Fe

Niobium on BEA Dealuminated Zeolite for High Selectivity Dehydration Reactions of Ethanol and Xylose into Diethyl Ether and Furfural

Towards the Green Synthesis of Furfuryl Alcohol in A One-Pot System from Xylose: A Review

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