Pervaporation-assisted catalytic conversion of xylose to furfural

Wang, Alex; Balsara, Nitash P.; Bell, Alexis T.

doi:10.1039/c6gc00581k

Cited by 33 publications

(22 citation statements)

References 41 publications

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“…At present, the rapidly depleting fossil fuels and escalating energy consumption coupled with rising environmental awareness among nations have led to an increased focus on alternative, viable, ecofriendly, and renewable energy sources. Biomass has considered by experts as the only truly sustainable source of energy and organic carbon for our industrial society, and it has the potential to displace petroleum for the production of chemicals and liquid transportation fuels …”

Section: Introductionmentioning

confidence: 99%

Benzoic Acid/TEMPO as a Highly Efficient Metal‐Free Catalyst System for Selective Oxidation of 5‐hydroxymethylfurfural into 2, 5‐diformylfuran

et al. 2017

Energy Tech

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The combination of benzoic acid and 2,2,6,6‐teramethylpiperidin‐1‐oxyl (TEMPO) afforded an efficient catalytic system for the aerobic oxidation of 5‐hydroxymethylfurfural (HMF) into 2,5‐diformylfuran (DFF) under certain conditions. The maximum conversion of 86.7 % for HMF was obtained with a nearly 77.8 % DFF yield at 1 mmol benzoic acid and 0.4 MPa oxygen pressure in acetonitrile. The aerobic oxidation ability of HMF into DFF depended on the electron density of the organic acid skeletal structure with the carboxyl group. Meanwhile, the catalyst system of benzoic acid/TEMPO also exhibited good performance for aerobic oxidation of other alcohols. Based on experimental results, we propose that the benzoic acid acted as the primary catalyst and TEMPO was the key co‐catalyst, oxidized into oxoammonium cation through electron transport and then regenerated by a superoxide radical during the reaction.

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Section: Introductionmentioning

confidence: 99%

Benzoic Acid/TEMPO as a Highly Efficient Metal‐Free Catalyst System for Selective Oxidation of 5‐hydroxymethylfurfural into 2, 5‐diformylfuran

et al. 2017

Energy Tech

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“…Similarly, the average permeability of 2‐furaldehyde differed at least three orders of magnitude between LDPE and EVOH. According to Wang, Balsara, and Bell, the block copolymer polystyrene‐block‐polydimethylsiloxane‐block‐polystyrene (SDS) had twice as high 2‐furaldehyde permeability as that of cross‐linked polydimethylsiloxane (PDMS) despite in such a small volume fraction of the transporting block. In this regard, having more permeable transporting block copolymers or cross‐linked structures will increase film resistance to permeation by 2‐furaldehyde .…”

Section: Resultsmentioning

confidence: 99%

Development and evaluation of organic vapour permeation system for packaging applications

et al. 2019

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This paper reported the permeability of four different organic compounds in low‐density polyethylene (LDPE), ethylene vinyl alcohol (EVOH), and in a multilayer film composed of them through the isostatic flow permeation measurement system. The methodology assumed that the nitrogen feed stream is saturated with organic vapour, and a chromatographic technique was used as a detector for the quantification of the permeate. The results were in general good agreement with literature reports, providing accuracy and reliability of measurement procedures. The permeability of LDPE increased with increasing hydrophobicity of organic compounds, but hydrophilic EVOH suggesting that there had been an effect of functional groups on permeability behaviour. The multilayer films were observed larger than expected because of the interface responsible for adhesive bonding of tie resins to EVOH by chemical interactions. Nonetheless, as an application of such multilayer structures, we suggested the method studied as feasible and possible tools for characterizing permeation properties against organic vapours.

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“…These membranes were received as sheets and were cut to fit the membrane cell. The block copolymer polystyreneblock-polydimethylsiloxane-block-polystyrene (SDS), which was previously shown to be permeable to furfural, [38][39][40] was purchased from Polymer Source and was used as received. The number-averaged molecular weight of the polydimethylsiloxane block was 104 kg mol −1 , and that of each polystyrene block was 22 kg mol −1 .…”

Section: Experimental Methodsmentioning

confidence: 99%

“…30,31,41 This study builds on our previous investigations, which demonstrated the performance of a batch membrane reactor for producing furfural from xylose using a hetero-geneous catalyst. 40 Here, we combine the reaction and membrane processes thereby eliminating the extraneous heating and cooling elements of the prior membrane reactor design in order to achieve a system that can be used for continuous reaction and separation. We found that pervaporation is able to fully retain the homogeneous catalyst in the reactor.…”

Section: Introductionmentioning

confidence: 99%

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Continuous pervaporation-assisted furfural production catalyzed by CrCl₃

2018

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Furfural-a precursor to fuels, solvents, and polymers-is produced by acid-catalyzed dehydration of biomass-derived xylose; however, the selectivity of this process is limited by side reactions which form low-value byproducts known as humins. The production of humins can be reduced by extracting furfural as it is produced. In this paper we report the design and performance of a membrane-pervaporationassisted reactor for the continuous CrCl 3 -catalyzed conversion of xylose to furfural. Pervaporation offers a simple means for separating products from homogeneous catalysts and reactants with negligible vapor pressure. By combining reaction with product pervaporation, it was possible to produce furfural continuously without catalyst addition during the reaction. We also conducted simulations of the continuous reaction while varying the membrane-area-to-reactor-volume ratio, a v . These simulations showed that there is an optimal value of a v for which the permeate concentration of furfural and reaction selectivity are maximized. For the parameters used in this study, the optimal value of a v is 0.17 cm −1 . Our work provides a basis for the design of a continuous pervaporation-assisted reactor and illustrates the sensitivity of this approach to individual system parameters.

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Pervaporation-assisted catalytic conversion of xylose to furfural

Abstract: A reactor/membrane system was designed, built, and tested for improved furfural production from xylose.

Cited by 33 publications

References 41 publications

Benzoic Acid/TEMPO as a Highly Efficient Metal‐Free Catalyst System for Selective Oxidation of 5‐hydroxymethylfurfural into 2, 5‐diformylfuran

Benzoic Acid/TEMPO as a Highly Efficient Metal‐Free Catalyst System for Selective Oxidation of 5‐hydroxymethylfurfural into 2, 5‐diformylfuran

Development and evaluation of organic vapour permeation system for packaging applications

Continuous pervaporation-assisted furfural production catalyzed by CrCl₃

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Pervaporation-assisted catalytic conversion of xylose to furfural

Abstract: A reactor/membrane system was designed, built, and tested for improved furfural production from xylose.

Cited by 33 publications

References 41 publications

Benzoic Acid/TEMPO as a Highly Efficient Metal‐Free Catalyst System for Selective Oxidation of 5‐hydroxymethylfurfural into 2, 5‐diformylfuran

Benzoic Acid/TEMPO as a Highly Efficient Metal‐Free Catalyst System for Selective Oxidation of 5‐hydroxymethylfurfural into 2, 5‐diformylfuran

Development and evaluation of organic vapour permeation system for packaging applications

Continuous pervaporation-assisted furfural production catalyzed by CrCl3

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Continuous pervaporation-assisted furfural production catalyzed by CrCl₃