Sulfuric acid alcoholysis as a way to obtain cellulose nanocrystals

Surov, Oleg V.; Afineevskii, Andrei V.; Voronova, Marina I.

doi:10.1007/s10570-023-05470-8

Cited by 7 publications

(1 citation statement)

References 73 publications

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“…The difference in desorption behavior can be explained by the different p K a values of each functional group: for TOCNF, the p K a of the carboxy group is approximately 4–5; for P-CNF, the p K a1 and p K a2 are 3.1 and 8.3, 41 respectively; and for S-CNF, the p K a of the sulfate group is less than 2.5. 42 Furthermore, the desorption capacity values of the ALP/P-CNF were approximately 30% in cycle 2 and 50% in cycle 4 at pH 7.0, which were larger than those of the ALP/TOCNF and ALP/S-CNF. These results confirm that the adsorption/desorption behavior can be regulated by pH and the surface functional groups of the CNFs enveloping the ALP core.…”

Section: Resultsmentioning

confidence: 87%

Synthesis and structural design of microspheres comprising cellulose nanofibers and artificial lignin polymer by enzyme-mediated Pickering emulsion templating

Tanaka,

Li,

Hatakeyama

et al. 2024

RSC Sustain.

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Section: Resultsmentioning

confidence: 87%

Synthesis and structural design of microspheres comprising cellulose nanofibers and artificial lignin polymer by enzyme-mediated Pickering emulsion templating

Tanaka,

Li,

Hatakeyama

et al. 2024

RSC Sustain.

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Enhanced Production of Furfural via Methanolysis of Wood Biomass with HCl Gas

Topias Kilpinen,

Yousefi,

Kontturi

2024

ChemSusChem

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This study explores the production of furfural, xylose and methylxylosides through the methanolysis of wood flour using anhydrous HCl gas. The process involves methanolysis of wood flour with HCl gas under pressure to generate methylxylosides, which are subsequently converted to xylose and furfural via autohydrolysis in a Parr batch reactor system. The methanolysis was conducted in temperature‐controlled HCl gas chamber employing 24 h reaction time and 50% methanol content in wood flour. During the methanolysis step with HCl gas, 65% of the available xylan in wood flour was converted to water‐soluble methylxylosides, xylose, xylooligosaccharides (XO) and water‐soluble methyl xylooligosaccharides (MXO). Methanolysis filtrates were then autohydrolyzed with Parr 50 mL batch reactor system to xylose and furfural in two different pH values at 180˚C. The highest furfural yield of 91% from methanolysis filtrate was achieved with pH 1.2 and 25 min reaction time.

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