Dehydration of Xylose to Furfural over Imidazolium-Based Ionic Liquid with Phase Separation

Hua, Ding; Ding, Hao; Liu, Yunfeng; Li, Jian; Han, Bo

doi:10.3390/catal11121552

Cited by 6 publications

(1 citation statement)

References 26 publications

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“…A higher performance temperature did not favor the formation of FAL [46], and a low FAL yield could be obtained [47]. Although a higher dehydration temperature might increase the dehydration activity for converting xylose into FAL, the unwanted side-reaction potentially would happen [48]. Some unnecessary substances might deposit in the catalytic centers on SO 4 2− /SnO 2 -FFS, and significant influence the catalytic activity and the FAL yield was thusly decreased [19].…”

Section: Resultsmentioning

confidence: 96%

Efficient Synthesis of Furfural from Corncob by a Novel Biochar-Based Heterogeneous Chemocatalyst in Choline Chloride: Maleic Acid–Water

Yang,

Li,

et al. 2023

Catalysts

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The use of plentiful and renewable feedstock for producing chemicals is fundamental for the development of sustainable chemical processes. Using fish scale as a biobased carrier, a novel biochar SO42−/SnO2-FFS heterogeneous chemocatalyst was prepared to catalyze furfural production from xylose-rich corncob-hydrolysates obtained from acid hydrolysis of corncob in a deep eutectic solvent (DES)–water system. By characterizing the physical as well as chemical properties of SO42−/SnO2-FFS by NH3-TPD, FT-IR, XPS, XRD, and SEM, it was shown that the chemocatalyst had Lewis/Brönsted acid centers, and its surface roughness could be well expanded to contact substrates. The corncob was initially hydrolyzed at 140 °C to obtain xylose-rich hydrolysate. Subsequently, SO42−/SnO2-FFS (3.6 wt.%) was used to catalyze the corn cob hydrolysate containing D-xylose (20.0 g/L) at a reaction temperature of 170 °C for 15 min. Additionally, ZnCl2 (20.0 g/L) was added. Ultimately, furfural (93.8 mM, 70.5% yield) was produced in the deep eutectic solvent ChCl:maleic acid–water (DESMLA–water = 10:90, v/v). A synergistic catalytic mechanism for transforming xylose-rich corncob-hydrolysate into furfural and byproducts were proposed using SO42−/SnO2-FFS as a chemocatalyst in DESMLA–water containing ZnCl2. Consequently, the efficient use of biochar SO42−/SnO2-FFS chemocatalysts for the sustainable synthesis of biobased furan compounds from biomass holds great promise in the future.

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