sulfonated cellulose ball milling

The ball‐milling of cellulose fibers and recrystallization ,

The ball‐milling of cellulose fibers and recrystallization ,

The type of lattice which develops on recrystallization was found to depend on the original lattice, the extent of ball‐milling and the conditions of recrystallization A highly ball‐milled sample could be made to recrystallize as cellulose I, II, or IV depending on the conditions

Ball milling: a green technology for the preparation and ,

Ball milling: a green technology for the preparation and ,

Aug 01, 2017· The significantly reduced Cr in further milling indicated that the sufficient ball milling treatment time or enough small particle size resulted in the effective destruction of the crystalline structure in cellulose (Zhang et al, 2015, Jiang et al, 2016) The Cr HR80 was higher than the Cr HMW, and Cr HR120 have an improvement as well

Hydrolysis of Cellulose Selectively into Glucose Over ,

Hydrolysis of Cellulose Selectively into Glucose Over ,

Ball-milling experiments were performed using ZrO 2 balls (mass of 18 kg and diameter of 2 cm) The balls were loaded with 20 g of cellulose (Fluka, Avicel PH-101, microcrystalline) into a ZrO 2 bottle (2000 mL) A typical catalytic reaction procedure: cellulose (45 mg) treated by ball-milling for 48 h shown in Fig 1, catalyst (50 mg),

(PDF) Sulfonated silica/carbon nanocomposites as novel ,

(PDF) Sulfonated silica/carbon nanocomposites as novel ,

Hydrolytic conversion of cellulose over heterogeneous acids Reaction conditions: cellulose pretreated by ball-milling 005 g, catalyst 005 g, water 5 mL, reaction time 24 h, temperature 423 K

Sulfonated silica/ carbon nanocomposites as novel ,

Sulfonated silica/ carbon nanocomposites as novel ,

Reaction conditions: cellulose pretreated by ball-milling 005 g, catalyst 005 g, water 5 mL, reaction time 24 h, temperature 423 K With this knowledge in mind, we focused on the hydrolytic conversion of cellulose on the new class of sulfonated silica/carbon nanocomposites ( Fig 2 )

A co-production of sugars, lignosulfonates, cellulose, and ,

A co-production of sugars, lignosulfonates, cellulose, and ,

Aug 01, 2017· The significantly reduced Cr in further milling indicated that the sufficient ball milling treatment time or enough small particle size resulted in the effective destruction of the crystalline structure in cellulose (Zhang et al, 2015, Jiang et al, 2016) The Cr HR80 was higher than the Cr HMW, and Cr HR120 have an improvement as well

Multiple factor analysis on preparation of cellulose ,

Multiple factor analysis on preparation of cellulose ,

The estimated marginal means of Factor A, ie, mass ratio of milling ball to cellulose pulp, and its profile plot are shown in Table 5 and Fig 2, respectively The results disclose that the percentage of CNFs increased when the mass ratio of milling ball to cellulose pulp increased from 40% (level 1) to 60% (level 2) and finally to 80% (level 3)

Hydrolysis of cellulose into glucose over carbons ,

Hydrolysis of cellulose into glucose over carbons ,

pretreated by ball-milling at room temperature for 48 h, with ZrO2 balls and a speed of 500 rpm (PM 100, RETSCH ball mills, 50 ml) The hydrolysis of cellulose was carried out in a stainless-steel autoclave with autogenous pressure For each reaction, 027 g of cellulose, 03 g of catalyst and 27 ml

Fast catalytic conversion of recalcitrant cellulose into ,

Fast catalytic conversion of recalcitrant cellulose into ,

The methods of cellulose pretreatment included ball-milling treatment, 79,94 non-catalytic hydrothermal treatment of cellulose in water, 90 pretreating cellulose with acids at an appropriate temperature, 54 ultrasound and plasma treatment, 95,96 and so on 97,98 For instance, in 2012 Huber et al introduced a two-step process, including non ,

Coupled Pretreatment with Liquid Nitrogen and Ball Milling ,

Coupled Pretreatment with Liquid Nitrogen and Ball Milling ,

A key problem in the conversion of cellulose into chemicals and fuels is the low product yield from cellulose due to its robust structure In this work, for the first time, cellulose was pretreated with coupling of liquid nitrogen and ball milling (LN–BM) for cellulose hydrolysis After the LN–BM treatment, the glucose yield from cellulose by HCl in water increased by almost 2 times and ,

Ball milling for cellulose depolymerization and ,

Ball milling for cellulose depolymerization and ,

Jun 01, 2019· The particle size distribution is presented in Table 1It can be seen that the D 50, namely median particle size, of microcrystalline cellulose (BM0) was far larger than that of ball-milled samplAs the increase of ball milling time from 0 to 10 min, D 50 decreased from 6167 to 2187 μm It gradually decreased with the prolonging of milling time and a minimum D 50 of 1520 μm was ,

Effect of ball milling on the hydrolysis of ,

Effect of ball milling on the hydrolysis of ,

Cryogenic ball milling for 2 min also results in a significant size reduction but only little change in cellulose crystallinity and specific reactivity during hydrolysis Therefore, crystallinity is the dominant factor in determining the hydrolysis reactivity of cellulose in HCW while particle size only plays a ,

Coupled Pretreatment with Liquid Nitrogen and Ball Milling ,

Coupled Pretreatment with Liquid Nitrogen and Ball Milling ,

The yield of glucose increased rapidly when the ball-milling time increased from 0 to 2 h The maximum yield of glucose from LN−BM-2 was 414%, which was slightly lower than that from LN−BM-3 (422%) From the viewpoint of energy consumption, the LN−BM treatment of cellulose for ball-milling time of 2 h is appropriate, and the sample of ,

Enhanced hydrolysis of cellulose by highly dispersed ,

Enhanced hydrolysis of cellulose by highly dispersed ,

Amorphous cellulose-1 (pretreated by phosphoric acid) was more likely to be degraded than amorphous cellulose-2 (pretreated by ball-milling) because of the lower crystallinity, and the TRS and glucose yields reached 783% and 697%, respectively, after an 8-h reaction (Entry 9)

Efficient hydrolyzation of cellulose in ionic liquid by ,

Efficient hydrolyzation of cellulose in ionic liquid by ,

To improve the reaction efficiency, ball-milling and solubilization in ionic liquids of cellulose were adopted A maximum total reducing sugar yield of 818 % was obtained in ionic liquid 1-butyl-3-methyl imidazolium chloride at 125 °C for 90 min when the water addition was 10 % of ionic liqu

Solvent‐Free Catalytic Depolymerization of Cellulose to ,

Solvent‐Free Catalytic Depolymerization of Cellulose to ,

Milling the acid‐impregnated cellulose fully converts the substrate into water‐soluble oligosaccharides within 2 h In aqueous solution, soluble products are easily hydrolyzed at 130 °C in 1 h, leading to 91 % conversion of the glucan fraction of α‐cellulose into glucose, and 96 % of the xylans into xylose

Transformation of Cellulose into Biodegradable Alkyl ,

Transformation of Cellulose into Biodegradable Alkyl ,

Florent Boissou, Nassim Sayoud, Karine De Oliveira Vigier, Abdellatif Barakat, Sinisa Marinkovic, Boris Estrine, François Jérôme, Acid‐Assisted Ball Milling of Cellulose as an Efficient Pretreatment Process for the Production of Butyl Glycosides, ChemSusChem, 101002/cssc201500700, 8, 19, ,

Electronic Supplementary Information for Sulfonated silica ,

Electronic Supplementary Information for Sulfonated silica ,

Cellulose (Avicel PH-101, microcrystalline) was characterized (i) as received from Sigma-Aldrich and (ii) after 24 h ball-milling pretreatment Ball-milling with 25 g of cellulose was carried out using ZrO2 balls (mass 75 g; diameter 18 cm) SEM images of cellulose before and after ball-milling ,

Selective Hydrolysis of Cellulose and Polysaccharides into ,

Selective Hydrolysis of Cellulose and Polysaccharides into ,

Ball-milling treatment of microcrystalline cellulose resulted in an insoluble material with β-1,4-glycosidic bonds but containing large noncrystalline regions as conﬁrmed by XRD and CP/MAS 13C NMR21) The re-action rate of cellulose hydrolysis using dilute sulfuric acid at 448 K increased with decreasing cellulose crys-tallinity21)

Mechanochemical deconstruction of lignocellulosic cell ,

Mechanochemical deconstruction of lignocellulosic cell ,

Aug 01, 2019· In this work, the deconstruction mechanism of corn stover cell wall polymers during ball milling was evaluated The characterization showed that ball milling not only brought about the dissociation of the cross-linked cellulose-hemicellulose-lignin complex but also led to the depolymerization of the cell-wall polymers especially the carbohydrat

Hydrolysis of Cellulose into Glucose by Magnetic Solid ,

Hydrolysis of Cellulose into Glucose by Magnetic Solid ,

Mizuho Yabushita, Hirokazu Kobayashi, Kenji Hara, Atsushi Fukuoka, Quantitative evaluation of ball-milling effects on the hydrolysis of cellulose catalysed by activated carbon, Catal Sci , Catalytic Conversion of Cellulose into Levulinic Acid by a Sulfonated Chloromethyl Polystyrene Solid Acid Catalyst, ChemCatChem, 101002/cctc201300956 ,

Efficient Catalytic Conversion of Cellulose to Platform ,

Efficient Catalytic Conversion of Cellulose to Platform ,

cellulose is increased by mix-milling process 2 1 Hydrolysis of Cellulose by Activated Carbon Catalysts Hara et al and Onda et al independently reported the hydrolysis of cellulose catalyzed by sulfonated car-bons in 200816),17), and many researchers have focused on use of other sulfonated materials to improve the -

Synthesis and characterization of triazole , - Cellulose

Synthesis and characterization of triazole , - Cellulose

Sofla MRK, Brown RJ, Tsuzuki T, Rainey TJ (2016) A comparison of cellulose nanocrystals and cellulose nano Fi Bres extracted from bagasse using acid and ball milling methods Adv Nat Sci Nanosci Nanotechnol 7(3):1–9

Enhanced sugar alcohol production from cellulose by ,

Enhanced sugar alcohol production from cellulose by ,

For mixed ball-milling, microcrystalline cellulose and the solid acid catalyst were charged in a 100-mL ZrO 2 container, and the ball-milling was carried out at a speed of 500 rpm with ZrO 2 balls (15 balls, Φ=7 mm) for 0-4 h To avoid thermal degradation of the microcrystalline cellulose, the temperature was not higher than 333 K

Bridging the gap between cellulose chemistry and ,

Bridging the gap between cellulose chemistry and ,

CH2 scissoring motion in the cellulose I crystal The ball-milling allows the regular arrangement of the CH2OH group on C6 to relax into a more random one, resulting in a broader band at 1430 cm-1 Figure 4: IR spectra of cellulose before (a) and after ball-milling (b) 12 Hydrolysis of cellulose to glucose

Effects of ball milling on the structure of cotton cellulose

Effects of ball milling on the structure of cotton cellulose

Jan 17, 2019· Cellulose is often described as a mixture of crystalline and amorphous material A large part of the general understanding of the chemical, biochemical and physical properties of cellulosic materials is thought to depend on the consequences of the ratio of these components For example, amorphous materials are said to be more reactive and have less tensile strength but comprehensive ,

Mechanochemical Decomposition of Crystalline Cellulose in ,

Mechanochemical Decomposition of Crystalline Cellulose in ,

Jan 30, 2018· Direct depolymerization of crystalline cellulose into water‐soluble sugars by solvent‐free ball milling was examined in the presence of a strongly acidic layered metal oxide, HNbMoO 6, resulting in full conversion with 72 % yield of water‐soluble sugarsMeasurements by 13 C cross‐polarization magic angle spinning NMR spectroscopy and X‐ray diffraction revealed that amorphization of ,

Zr/P/O catalyst for the direct acid chemo-hydrolysis of ,

Zr/P/O catalyst for the direct acid chemo-hydrolysis of ,

Feb 01, 2014· Amberlyst 15 (supplier Sigma–Aldrich) was also used as a reference sulfonated system High energy ball milling of cellulose was carried out using a SPEX CertiPrep 8000-series Mixer/Mill, using vials with tungsten carbide-lined body and two 7/16 in ,

A co-production of sugars, lignosulfonates, cellulose, and ,

A co-production of sugars, lignosulfonates, cellulose, and ,

Ball-milled woods with two particle sizes were prepared by ball milling for 80min or 120min (BMW80, BMW120) and then enzymatically hydrolyzed 783% cellulose conversion of BMW120 was achieved, which was three times as high as the conversion of BMW80

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