sulfonated cellulose ball milling

sulfonated cellulose ball milling

Extraction of Microfibrillar Cellulose From Waste …

Extraction of Microfibrillar Cellulose From Waste …

Though recycling of waste paper is widely practiced but usually it is downgraded to lower valued recycled waste paper. Based on this concern, we report the development of novel NaOH/urethane aqueous system for extraction of microfibrillated cellulose from waste paper. The purity of so obtained microfibrillated cellulose (MFC) was evaluated by morphological tests using scanning electron ...

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DOI: 10.1002/cctc.201000302 Recent Advances in the ...

DOI: 10.1002/cctc.201000302 Recent Advances in the ...

2015-9-18 · Avicel cellulose particles, before (average particle size 50 mm; a, b) and after ball-milling pretreatment (average particle size 20 mm; c). ChemCatChem 2011,3,82–94 2011 Wiley-VCH Verlag &Co. KGaA, Weinheim www.chemcatchem.org 83 Catalytic Conversion of Cellulose

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成果及论文

成果及论文

X-MOL科学知识平台,期刊论文图文内容每日更新,海内外课题组信息,行业新闻文摘,化学类网址导航,化学软件和数据 ...

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漆新华

漆新华

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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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.

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A comparison of cellulose nanocrystals and cellulose ...

A comparison of cellulose nanocrystals and cellulose ...

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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High-Yielding One-Pot Synthesis of Glucose from …

High-Yielding One-Pot Synthesis of Glucose from …

2019-12-12 · High-yielding one-pot synthesis of glucose from cellulose and pentoses/hexoses from real biomass is achieved by using simple activated carbons and 0.012% HCl in water. Ball-milling cellulose and the carbon together created good physical contact between the solid substrate and solid catalyst before the reaction, selectively and drastically improving the depolymerization rate of cellulose to ...

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Water‐Tolerant Mesoporous‐Carbon‐Supported …

Water‐Tolerant Mesoporous‐Carbon‐Supported …

Mizuho Yabushita, Hirokazu Kobayashi, Kenji Hara and Atsushi Fukuoka, Quantitative evaluation of ball-milling effects on the hydrolysis of cellulose catalysed by activated carbon, Catal. Sci. Sci. Technol. , 4 , 8 , (2312) , (2014) .

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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).

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Catalytic transformation of cellulose into platform chemicals ...

Catalytic transformation of cellulose into platform chemicals ...

2013-9-21 · Rod-milling and planetary ball-milling processes also convert the crystalline cellulose into amorphous one in shorter time (<1 h) [40,41], whereas the CrI does not decrease by jet-milling [40]. The jet-milling treatment simply reduced secondary particle size from 44 m to 16 m.

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Sulfonated cellulose nanofibrils obtained from wood …

Sulfonated cellulose nanofibrils obtained from wood …

2013-1-22 · The consecutive pre-treatment of cellulose with periodate and bisulfite was used as a new potential method to promote nanofibrillation of hardwood pulp and to obtain nanofibrils with sulfonated functionality. Nanofibrils having typical widths of 10–60 nm were obtained from sulfonated celluloses having low anionic charge densities (0.18–0.51 mmol/g) by direct high-pressure homogenization ...

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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 …

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Zn-Ca-Fe氧化物催化水解微晶纤维素

Zn-Ca-Fe氧化物催化水解微晶纤维素

2010-8-13 · [8] Zhao Haibo, Kwak Ja Hun, Wang Yong, et al. Effects of Crystallinity on Dilute Acid Hydrolysis of Cellulose by Cellulose Ball-Milling Study[J]. Energy Fuels, 2006, 20(2): 807-811. [9] Sun Ye, Cheng J J. Dilute Acid Pretreatment of Rye Straw and, 2005, 96(14

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(PDF) Efficient hydrolyzation of cellulose in ionic liquid ...

(PDF) Efficient hydrolyzation of cellulose in ionic liquid ...

cellulose by cellulose ball-milling study. Energy Fuels. 20:807–811. Cellulose. 123. ... Sulfonated biochar derived from forestry wood waste was employed for the catalytic conversion of starch ...

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Enhanced Electrorheological Response of Cellulose: A ...

Enhanced Electrorheological Response of Cellulose: A ...

A high-pressure homogenization method [18,19] and ball-milling [20,21] are used to make the cellulose smaller and amorphous. Noncovalent modification [ 22 ], sulfonation [ 23 ], TEMPO-mediated oxidation [ 24 ], esterification [ 25 , 26 , 27 ], etherification [ 28 ] and silylation [ 29 , 30 ] are chemical approaches applied to change the ...

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Mechanochemical Decomposition of Crystalline …

Mechanochemical Decomposition of Crystalline …

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 sugars.Measurements by 13 C cross‐polarization magic angle spinning NMR spectroscopy and X‐ray diffraction revealed that amorphization of ...

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white ball mill gold ores

white ball mill gold ores

gold ore milling and wet ball mill machinery. Ball Mill Ore Beneficiation,Flotation Process,Magnetic Separation . The ball mill is the key equipment that material to be broken, and then to be smashed . Get Price. used small ball mill for gold ore . small scale gold ore grinding machine manufaturer,java Ball mill can be used to pulverize most ...

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Bridging the gap between cellulose chemistry and ...

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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Modification of Cellulose | Springer for Research ...

Modification of Cellulose | Springer for Research ...

Ball milling of MCC and IBVE in vacuum ... In 2017, Maleki and coworkers in another study have applied above sulfonated magnetic cellulose-based nanocomposite as an efficient, inexpensive, and green catalyst for the one-pot three-component synthesis of 7-aryl-8H-benzo[h] ...

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发表论文-催化与新材料研究室

发表论文-催化与新材料研究室

Effect of ball milling time on the hydrogen storage properties of TiF3-doped LiAlH4 Shu Sheng Liu, Li Xian Sun,*, Yao Zhang, Fen Xu ,**, Jian Zhang, Hai Liang Chu, Mei Qiang Fan, Tao Zhang, Xiao Yan Song, Jean Pierre Grolier Int J Hydrogen Energy, (2009)8079

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amorphization of different cellulose samples by ball …

amorphization of different cellulose samples by ball …

Ball milling differenttigocoza Amorphization of different cellulose samples by ball milling Various samples of cellulose I microcrystalline cellulose pine wood and beech wood pulp respectively and cellulose II viscose modal lyocell and polynosic fibers were ball-milled for 5 to 60 minutes In order to quantify the degradation of the.

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Sulfonated silica/ carbon nanocomposites as novel ...

Sulfonated silica/ carbon nanocomposites as novel ...

Reaction conditions: cellulose pretreated by ball-milling 0.05 g, catalyst 0.05 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 ).

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Ball Milling for Biomass Fractionation and Pretreatment ...

Ball Milling for Biomass Fractionation and Pretreatment ...

2019-5-25 · The combination of ultrafine ball milling and low-severity alkali treatment played a significant role in the cellulose supramolecular change, which can then be used for downstream biorefinery processes or as a feedstock for the biomaterial industry. KEYWORDS: Wheat straw, Particle size, Alkali treatment, Ball milling, Enzymatic hydrolysis

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Chemocatalytic Conversion of Cellulose into Key …

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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Recent Strategies in Preparation of Cellulose …

Recent Strategies in Preparation of Cellulose …

3.1.3. Ball Milling. Ball milling technique is also used for the production of CNFs. In this process, cellulose in a way of suspension can be disintegrated by the high energy collision between the balls (e.g., ceramic, metal, or zirconia) in a hollow cylindrical container while the container rotates.

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Ball mill crusher uses

Ball mill crusher uses

Ball Mill RETSCH powerful grinding and homogenizat . A ball mill for powerful size reduction and homogenization They are used for the most demanding tasks, from routine sample processing to colloidal grinding and advanced materials development The High Energy Ball Mill Emax is an entirely new type of mill for high energy input The unique bination of high friction and impact results in ...

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Effects of ball milling on the structure of cotton cellulose

Effects of ball milling on the structure of cotton cellulose

2019-1-17 · 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 ...

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Development of Solid Catalyst–Solid Substrate …

Development of Solid Catalyst–Solid Substrate …

2020-2-4 · Therefore, we ball-milled K26 and cellulose together to make a higher degree of solid–solid contact, which was named mix-milling. 42 In the dry ball-milling process, crystalline cellulose is broken into smaller amorphous particles by the impact of hard balls made of e.g. alumina. The small particles also cause agglomeration in the milling ...

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Production of glucose by hydrolysis of cellulose at 423 K ...

Production of glucose by hydrolysis of cellulose at 423 K ...

2013-12-5 · Hydrolysis of cellulose to glucose is a key technology for effective use of lignocellulose ... hydrothermal conditions at 423 K in the presence of sulfonated activated carbon (AC-SO3H) ... Biobasic Inc. (Shanghai) and treated by ball-milling (SHQM-0.4L, Chunlong Petroleum Instrument Co., Ltd. Lianyungang, Jiangsu) ...

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