Lewis–Brønsted Ni-MFI was tailored using the distinct kinetics of structural transformation and framework Ni stabilization in interzeolite transformation, catalyzing glucose conversion.

Hydrotropic solvents are a promising solvent in biomass processing due to their unique amphiphilic structure. This review summarizes recent advances hydrotropic systems with chemical structure, amphiphilicity, roles, and mechanism.

The increasing importance of environmental sustainability has led to the development new materials that are environmentally friendly, functional, and cost-effective. Lignin-containing cellulose nanomaterials a common example these. advantages lignocelluloses include their renewability, sustainability, functionality combined with molecular rigidity enhanced hydrophobicity. In order valorize these beneficial traits from lignin-containing nanocellulose, various approaches have been examined in...

The pulp from Korean mixed oaks were prepared by LAS (Low temperature, Atmospheric pressure, and Short reaction time) pulping method with different temperature reaction. under low cooking had a high residual lignin content spite of increasing time. However, as the increased, in wood was easily removed yield increased decreased. peak intensities derived hemicellulose lignin, which have been confirmed chips, are gradually weaker response to pulping. Peak regions representing cellulose strongly...

Abstract Biomass‐derived deep eutectic solvents (DESs) have been introduced as promising pretreatment and fractionation because of their mild processing conditions, easy synthesis, green solvent components from biomass. In recent DES studies, solvent‐based third constituents like water, ethanol, others improve the processibility typical binary DESs. However, impacts these are not well understood. Here, two constituents, including water ethylene glycol, were applied to 3,4‐dihydroxybenzoic...

As a green solvent for biomass processing, deep eutectic solvents (DESs) have shown effectiveness in processing. In this study, phenolic aldehydes with different numbers of methoxy groups, including 4-hydroxybenzaldehyde (HBA, no methoxy), vanillin (VA, monomethoxy), and syringaldehyde (SA, dimethoxy) were employed to synthesize DESs choline chloride (ChCl). The presence groups the hydrogen bond donor structure affected DES properties, as well pretreatment performance. high thermal stability...

Lignin is a promising feedstock for renewable fuels and chemicals due to its aromatic skeleton natural abundance. can be converted diverse monomers as well dicarboxylic acids depending on the applied conversion technologies. Despite great potential, native processing-induced heterogeneity complexity limit efficiency product selectivity. In this study, magnesium ferrite (MgFe2O4) nanoparticle–peracetic acid (PAA) has been investigated an efficient catalyst–oxidant incorporation catalytic...

As a basic study for the new materialization of biomass, chemical dispersion biomass using microwave was performed under various conditions. And characteristics dispersed residues were compared with According to reaction condition microwave, residual ratio by micronization wood meals decreased, and Klason lignin also decreased. However, content acid soluble did not show any significant difference. These results indicate that showed lowest at 60 seconds time 2.5% catalyst or 120 2.0%. It is...

Lignin-contained microfibrillated cellulose (LMFC) has recently received much attention with potential applications as reinforcement materials in polymer composites. This paper presented the applicability of organosolv-derived MFC a polylactic acid (PLA). Approximately 15.1% lignin containing pulp was prepared by organosolv pulping and then subjected to homogenization solvent exchange processes produce powder form LMFC 22.9 aspect ratio. The MFC-PLA filaments contained 1-10% wt% were...

We compared the characteristics of three LMCFs (lignin rich micro-cellulosic fines) prepared by microwave irradiation, oil bath treatment and high pressure steam from pine wood powder. The residual lignin contents methods were almost similar but yields different. irradiation method hydrolyzed powder more greatly to other methods. So, showed lowest particle size least amount hydroxyl groups but, highest total crystallinity index. It was found that in morphology different content aromatic ring...

In this study, we prepared and analyzed fibrillated fibers based on the volume occupied by organosolv pulp suspension inside kneader to investigate effect of concentration (PVC) during kneading process with respect micronization pulp. The optical-microscopy Kajaani fiber analysis, freeness, water retention value proved that fibrillation refinement can be attributed alkali treatment. Furthermore, effectiveness improved increasing kneading. cellulose thin film fabricated using increased PVC...

To confirm the fiber characteristics of modern paper by nondestructive method, we collected samples for which publication year was known, and analyzed spectroscopic method. The average length all over 1.0 mm softwood pulps hardwood were distributed at various ratios. In 1960s 1970s, some long fibers used to make paper. From TCI results using IR spectra, 2000’s can be expected use more pulp chemical than other years’ samples. lower HBI values in suggest that papermaking chemicals has...

This study applied microfibrillated cellulose (MFC)/polylactic acid (PLA) composite filaments made of lignin-free (F-MFC, 1.0% Klason lignin) and -rich (R-MFC, 4.5% MFC in PLA as a matrix to three-dimensional (3D) printing. Further, the 3D printing quality physical performance using printed test specimens was evaluated. Regardless their lignin contents, both F-MFC R-MFC showed good compatibility with after solvent exchange tert -butyl alcohol, resulting better dispersion methylene chloride....

In this study, chemical micronization method was used to produce (lignin rich microcellulose fines (LMCFs) of 10% lignin contents. The handsheets containing 5% LMCFs were prepared and analyzed their physical characteristics. morphology changed according the grinder (Super Masscollider) passing number. After 10 times through grinder, shape became similar those secondary fines. drainage time much shorter than that MFCs. tensile index gradually increased with grinding number LMCFs. handsheet...

The dissolution characteristics of glycol ether/NaOH solution were compared with NaOH/urea and PEG/NaOH solutions reported. With decreasing the particle size concentration cellulosic micro-fines (CMFs), ability CMFs was drastically increased in all solvents. Compared solution, had been found to exhibit a similar or higher regenerated cellulose degree polymerization as well solubility. FT-IR analysis also identified differences between natural cellulose. shortening length filter paper...

The LAS (low temperature, atmospheric pressure and short reaction time) process is a bioconversion of biomass using glycol ether acidic catalyst an organosolv process. In this study, the was applied to identify possibility pulping radiata pine. pulp prepared in for 60 minutes at temperature 120℃ with liquor ratio 1:4 selected as optimal pulp. had lower fiber length, higher residual lignin content degree polymerization than unbleached kraft (UKP). tensile strength handsheets made from that...

While lignin has garnered significant research interest for its abundance and versatility, complicated structure poses a challenge to understanding underlying reaction kinetics optimizing various characteristics. In this regard, mathematical models, especially the multiscale kinetic Monte Carlo (kMC) method, have been devised offer precise analysis of fractionation properties. The kMC model effectively handles simulation all particles within system by calculating rates between species...

In this study, in order to scientifically approach confirm the excellence of Seokgayeoraehaengjeoksong as Korean Cultural Heritage, we analyzed fibers and ink characteristics six types old documents including Seokgayeoraehaengjeoksong, compared traditional Hanji. As a result observing fiber length shape document through an optical microscope, it was confirmed that all were made paper mulberry. It speculated degree deterioration affected by preservation status regardless era production...