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sulfonated cellulose ball milling

sulfonated cellulose ball milling

Mechanochemistry-assisted hydrolysis of softwood

2019-10-18  In contrast, concerted ball-milling (CBM) of cellulose with the sulfonated carbon promotes a heterogeneously catalyzed hydrolysis to soluble oligosaccharides. By performing an in-depth physicochemical characterization of cellulose subjected to CBM treatment with different carbons, we reveal the crucial role of strong Brønsted acid sites in facilitating mechanocatalytic depolymerization.

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Ball milling for cellulose depolymerization and ...

2019-6-1  Ball milling was revealed to increase the accessibility of cellulose to the catalyst and disrupt the cellulose hydrogen-bonding networks, which facilitated the decomposition of cellulose. In addition, more reducing-end concentration suggested more reaction sites caused by ball milling pretreatment, contributing to the efficient conversion of cellulose.

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

2017-10-6  fonates, cellulose, and cellulose nanocrystals. Ball-milled woods with two particle sizes were prepared by ball milling for 80 min or 120 min (BMW 80, BMW 120) and then enzymatically hydrolyzed. 78.3% cel-lulose conversion of BMW 120 was achieved,

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Electronic Supplementary Information for Sulfonated

2010-9-8  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 7.5 g; diameter 1.8 cm). SEM images of cellulose before and after ball-milling

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A co-production of sugars, lignosulfonates, cellulose,

This study demonstrated the technical potential for the large-scale co-production of sugars, lignosulfonates, cellulose, and cellulose nanocrystals. Ball-milled woods with two particle sizes were prepared by ball milling for 80min or 120min (BMW80, BMW120) and then enzymatically hydrolyzed. 78.3% cellulose conversion of BMW120 was achieved, which was three times as high as the

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A co-production of sugars, lignosulfonates, cellulose,

2017-8-1  Ball milling reduced the cellulose size, which shortened the necessary hydrolysis time for harvesting the CNCs. Compared with previous studies that produced CNCs by sulfuric acid hydrolysis of the microcrystalline cellulose for 2 h (Du et al., 2017), the cellulose hydrolyzed for 30 min in this study produced the maximum yield of CNCs.

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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).

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Bridging the gap between cellulose chemistry and ...

2014-5-13  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). 1.2 Hydrolysis of cellulose to glucose

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Fast catalytic conversion of recalcitrant cellulose into ...

2016-8-1  Intense ball-milling of cellulose with a solid catalyst, e.g., together with acidic carbons, is required to improve such contact. 21 The utilization of ionic liquids (ILs) as reaction media, which are able to dissolve cellulose, has brought a significant enhancement in the catalytic efficiency for the hydrolysis of cellulose to glucose and LA in the presence of an acid catalyst. 57,58 Very recently, functionalized ILs with acidic functionalities have also been studied for the degradation of cellulose to LA. 59,60 Although ILs could evidently promote the degradation of cellulose,

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wet ball mill machine for cellulose - get2durban.co.za

Sulfonated Cellulose Ball Milling . Abstract this study demonstrated the technical potential for the large-scale co-production of sugars lignosulfonates cellulose and cellulose nanocrystals ball-milled woods with two particle sizes were prepared by ball milling for 80 min or 120 min bmw Details. Introduction. 2019-11-6in the untreated cellulose ...

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Enhanced hydrolysis of cellulose by highly dispersed ...

2021-5-22  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 78.3% and 69.7%, respectively, after an 8-h reaction (Entry 9).

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Electronic Supplementary Information for Sulfonated

2010-9-8  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 7.5 g; diameter 1.8 cm). SEM images of cellulose before and after ball-milling

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A co-production of sugars, lignosulfonates, cellulose,

Ball-milled woods with two particle sizes were prepared by ball milling for 80 min or 120 min (BMW 80, BMW 120) and then enzymatically hydrolyzed. 78.3% cellulose conversion of BMW 120 was achieved, which was three times as high as the conversion of BMW 80.

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Frontiers Mechanocatalytic Depolymerization of

2018-3-22  Aquivion PW98, sulfonated SBA-15 and sulfonated mesoporous carbon (CMK-3-SO 3 H) were either synthesized, or purchased, and initially screened as potential solid acid catalysts for the effective depolymerization of cellulose via ball-milling

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Bridging the gap between cellulose chemistry and ...

2014-5-13  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). 1.2 Hydrolysis of cellulose to glucose

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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).

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Properties of cellulose nanofibril produced from wet

2021-6-22  Ball Milling. Cellulose materials were wet ball-milled with a PQ-N2 planetary ball mill (Livingston, NJ, USA). The enzymatically treated fibers were diluted to 1.0 wt% and then agitated by a mechanical blender for 10 min. Then 150 g of the diluted fibril slurry were put into an

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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.

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Effects of ball milling on the structure of cotton cellulose

2019-2-24  Keywords Amorphous cellulose Ball milling Cellulose degradation Crystal structure Rietveld refinement Introduction Cellulose is often described as a two-phase material, with both crystalline and amorphous domains. It is widely thought that crystalline materials are stronger and less-reactive than their amorphous counterparts.

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Frontiers Mechanocatalytic Depolymerization of

2018-3-22  Aquivion PW98, sulfonated SBA-15 and sulfonated mesoporous carbon (CMK-3-SO 3 H) were either synthesized, or purchased, and initially screened as potential solid acid catalysts for the effective depolymerization of cellulose via ball-milling

Get Price

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

2017-10-6  by using ball milling pretreatment, neutral sulfite delignification, and cellulose upgradation, generating four target products (sugars, lignosulfonates, cellulose, and cellulose nanocrystals). The product yields are balanced to provide an intuitive view of the integrated profitability of multi-products. In order to co-produce more prod-

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wet ball mill machine for cellulose - get2durban.co.za

Sulfonated Cellulose Ball Milling . Abstract this study demonstrated the technical potential for the large-scale co-production of sugars lignosulfonates cellulose and cellulose nanocrystals ball-milled woods with two particle sizes were prepared by ball milling for 80 min or 120 min bmw Details. Introduction. 2019-11-6in the untreated cellulose ...

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Bridging the gap between cellulose chemistry and ...

2014-5-13  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). 1.2 Hydrolysis of cellulose to glucose

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Properties of cellulose nanofibril produced from wet

2021-6-22  Ball Milling. Cellulose materials were wet ball-milled with a PQ-N2 planetary ball mill (Livingston, NJ, USA). The enzymatically treated fibers were diluted to 1.0 wt% and then agitated by a mechanical blender for 10 min. Then 150 g of the diluted fibril slurry were put into an

Get Price

A co-production of sugars, lignosulfonates, cellulose,

This study demonstrated the technical potential for the large-scale co-production of sugars, lignosulfonates, cellulose, and cellulose nanocrystals. Ball-milled woods with two particle sizes were prepared by ball milling for 80min or 120min (BMW80, BMW120) and then enzymatically hydrolyzed. 78.3% cellulose conversion of BMW120 was achieved, which was three times as high as the

Get Price

Thermal degradation of hemicellulose and cellulose in

2021-4-16  Ball-milling process was conducted in air, but no extensive oxidation was expected to occur, since the literature [18, 19] reports that any dierences were not observed in the FT-IR spectra of ball-milled wood samples in nitrogen and in air. It has been reported that the ball-milling process decreases the cellulose crystallinity [15–17] and the

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Effects of ball milling on the structure of cotton cellulose

2019-2-24  Keywords Amorphous cellulose Ball milling Cellulose degradation Crystal structure Rietveld refinement Introduction Cellulose is often described as a two-phase material, with both crystalline and amorphous domains. It is widely thought that crystalline materials are stronger and less-reactive than their amorphous counterparts.

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Effects of ball milling on structural changes and hydrolysis of ...

2016-4-18  Ball milling parameters and their effects on structure were determined by SEM, XRD and FT-IR. The influence of milling parameters on cellulose conversion can be ranked as follows: ball milling speed>activation time>the mass ratio of ball to biomass.

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漆新华_百度百科

2. Feng Shen, Shuang Sun, Jirui Yang, Mo Qiu, Xinhua Qi*, Coupled pretreatment with liquid nitrogen and ball milling for enhanced cellulose hydrolysis in water, ACS Omega, 2019, 4(7): 11756-11759 DOI: 10.1021/acsomega.9b01406

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A co-production of sugars, lignosulfonates, cellulose,

This study demonstrated the technical potential for the large-scale co-production of sugars, lignosulfonates, cellulose, and cellulose nanocrystals. Ball-milled woods with two particle sizes were prepared by ball milling for 80min or 120min (BMW80, BMW120) and then enzymatically hydrolyzed. 78.3% cellulose conversion of BMW120 was achieved, which was three times as high as the

Get Price

Effects of Ball Milling Processes on the Microstructure ...

2018-6-22  After 2 h of ball milling, the microcrystalline structure was crushed into small fragment, with a more pronounced decrease in length than in width, indicating that during this stage the main effect of the milling was the breaking of the cellulose crystallites along the direction perpendicular to

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Thermal degradation of hemicellulose and cellulose in

2021-4-14  Although there is less information regarding the effect of ball milling on lignin than on cellulose, some literature reports [12, 14] determined that ball milling reduced the degree of polymerization of lignin and increased the phenolic structure by cleaving the ether linkages.Therefore, the β-ether structures remaining in the ball-milled wood samples were quantified using the thioacidolysis ...

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Effects of Ball Milling Processes on the Microstructure ...

To investigate the effect of ball mill treatment of microcrystalline cellulose (MCC) on the rheological properties of MCC-polymer suspension, the structure and physicochemical characteristics of ground samples with different milling time and the rheological behaviors of MCC-starch suspensions were determined and comprehensively analyzed.

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Zeolite Beta - The conversion of Cellulose to HMF

2018-2-15  By making use of cellulose pre-treatments such as ball-milling and performing the re-action in high concentrations of formic acid, a weak acid, high yields of glucose were obtained. Incorporating zeolite lead to lower yields of glucose but signi cantly in- ... 2.18 Hydrolytic conversion of cellulose over sulfonated activated carbon. . . .41

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VWDOVDQG

prepared by ball milling were not affected, indicating higher thermal stability. Keywords: cellulose, cellulose nanocrystals, cellulose nanofibrils, bagasse, ball milling, hydrolysis Classification number: 5.16 1. Introduction Cellulose is the most abundant polymer in nature and has long been a major renewable source of materials [1 ...

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Effects of ball milling on structural changes and hydrolysis of ...

2016-4-18  Ball milling parameters and their effects on structure were determined by SEM, XRD and FT-IR. The influence of milling parameters on cellulose conversion can be ranked as follows: ball milling speed>activation time>the mass ratio of ball to biomass.

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Surface Characterization of Powdered Cellulose Activated ...

2020-11-25  Article Surface Characterization of Powdered Cellulose Activated by Potassium Hydroxide in Dry Condition Through Ball Milling Mohammadali Azadfar 1,2,* and Michael P. Wolcott 1 1 Composite Materials and Engineering Center, Voiland College of Engineering and Architecture, Washington State University, P.O. Box 645815, Pullman, WA 99164-5815, USA; [email protected]

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Chemocatalytic Conversion of Cellulose into Key

Chemocatalytic transformation of lignocellulosic biomass to value-added chemicals has attracted global interest in order to build up sustainable societies. Cellulose, the first most abundant constituent of lignocellulosic biomass, has received extensive attention for its comprehensive utilization of resource, such as its catalytic conversion into high value-added chemicals and fuels (e.g., HMF ...

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漆新华 - Nankai University

2019-9-27  Feng Shen, Shuang Sun, Jirui Yang, Mo Qiu, Xinhua Qi*, Coupled pretreatment with liquid nitrogen and ball milling for enhanced cellulose hydrolysis in water, ACS Omega, 2019, 4(7): 11756-11759 DOI: 10.1021/acsomega.9b01406 14.

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