Studies on staged precipitation of cellulose from an ionic liquid by compressed carbon dioxide
文献情報
Xiaofu Sun, Yanling Chi, Tiancheng Mu
An efficient method to precipitate and refine cellulose from ionic liquids (ILs) using compressed CO2 as a gas anti-solvent was proposed. 1-Butyl-3-methylimidazolium acetate ([Bmim]OAc) was used as the solvent of microcrystalline cellulose (MCC). The yield and degree of polymerization (DP) value of the regenerated cellulose can be finely tuned by controlling the temperature, pressure, reaction time and addition of aprotic polar solvents. For gaining a better understanding of the possible cellulose precipitation mechanism, the possible carboxylation reaction, volume expansion and solvatochromic parameters of the solution caused by compressed CO2 were investigated. The solvent strength of the system can be adjusted by the pressure and temperature of CO2. The regenerated cellulose samples from [Bmim]OAc by addition of different anti-solvents were characterized by solid-state cross-polarization/magic angle spinning (CP/MAS) 13C NMR, X-ray diffraction (XRD) and atomic force microscopy (AFM). In addition, the energy consumption analysis during the anti-solvent process was discussed. The precipitation and staged bio-refining of cellulose from IL is easy, sustainable and cost-efficient.
関連文献
A novel crystalline SiCO compound
Miriam Marqués, Angel Morales-García, José Manuel Menéndez, Valentín G. Baonza, José Manuel Recio
DOI: 10.1039/C5CP03673A
Vertical heterostructures of MoS2 and graphene nanoribbons grown by two-step chemical vapor deposition for high-gain photodetectors
Rozan Mohamad Yunus, Hiroko Endo
DOI: 10.1039/C5CP03958D
Troponin structure: its modulation by Ca2+ and phosphorylation studied by molecular dynamics simulations
Juan Eiros Zamora, Maria Papadaki, Andrew E. Messer, Steven B. Marston, Ian R. Gould
DOI: 10.1039/C6CP02610A
Fluorescence fluctuation of an antigen–antibody complex: circular dichroism, FCS and smFRET of enhanced GFP and its antibody
Debmalya Bhunia, Rajdeep Chowdhury, Kankan Bhattacharyya
DOI: 10.1039/C5CP04908C
Ion segregation in an ionic liquid confined within chitosan based chemical ionogels
A. Guyomard-Lack, N. Buchtová, B. Humbert, J. Le Bideau
DOI: 10.1039/C5CP04198H
π-Ring currents in doped coronenes with nitrogen and boron: diatropic–paratropic duality
Inmaculada García Cuesta, Barnaby Pownall, Stefano Pelloni, Alfredo M. Sánchez de Merás
DOI: 10.1039/C5CP03732H
Nonadiabatic dynamics of floppy hydrogen bonded complexes: the case of the ionized ammonia dimer
Jan Chalabala, Petr Slavíček
DOI: 10.1039/C6CP02714H
A chemical chaperone induces inhomogeneous conformational changes in flexible proteins
Djemel Hamdane, Christophe Velours, David Cornu, Magali Nicaise, Murielle Lombard, Marc Fontecave
DOI: 10.1039/C6CP03635J
Flexible Ag–C60 nano-biosensors based on surface plasmon coupled emission for clinical and forensic applications
Pradyumna Mulpur, Sairam Yadavilli, Praharsha Mulpur, Neeharika Kondiparthi, Venkataramaniah Kamisetti
DOI: 10.1039/C5CP04268B
Double deuterated acetylacetone in neon matrices: infrared spectroscopy, photoreactivity and the tunneling process
Michèle Chevalier, Claudine Crépin
DOI: 10.1039/C6CP02796B
こちらもおすすめ
4-アミノフェノール酸ナトリウム水和物とは何ですか?
4-アミノフェノール酸ナトリウム水和物は、CAS番号206557-08-6の化合物で、4-アミノフェノールとナトリウムが結合した塩と水和物です。この化合物は、白...
Methyl 3-methyl-N-{[(2-methyl-2-propanyl)oxy]carbonyl}-L-histidinateの代替品はありますか?
この化合物は特定の合成プロセスに使用される可能性がありますが、代替品として、他の类似的な化合物、例えばMethyl 3-methyl-N-{[(2-methyl...
4-Boc-2-哌嗪甲酸の市場動向や研究トレンドはどうですか?
4-Boc-2-哌嗪甲酸は、薬品開発や合成化学分野で広く使用されており、その需要は継続的に推移しています。特に、新薬開発における合成化学分野での需要が高まってい...
4,4'-二羟甲基联苯の物理化学的性質は何ですか?
4,4'-二羟甲基联苯のCAS番号は1667-12-5です。この化合物は白色の結晶粉末で、分子量は154.20です。水にわずかに溶けますが、アルコールや有機溶媒...
5-甲硫基戊腈はどの業界で使用されていますか?
5-甲硫基戊腈は医薬品産業で使用される可能性があります。また、ポリマー合成の触媒として、センサー製造の一部として、半導体製造のプロセス改善に使用される可能性があ...
CAS番号1311961-50-8の化合物はどのように合成されますか?
この化合物は、1-abieta-8,11,13-trien-19-イルと6'-メトキシシンコナナン-9-基を含有する窒素含有化合物から合成されます。一般的な合成...
6-ブロモベンジジミダゾール-2-カルビルデオキシドはどのように保存すればよいですか?
6-ブロモベンジジミダゾール-2-カルビルデオキシドは、避光・乾燥した容器(密閉容器)で-20℃~4℃の低温で保存してください。高温や直射日光、湿気は避けてくだ...
Boc-N-甲基氨甲环酸とは何ですか?
621-65-8のCAS番号を持つBoc-N-甲基氨甲环酸は、化学式C7H13NO5を有する化合物です。この化合物は白色の結晶性粉末で、吸湿性があります。
乙基三氟硼酸钾はどのように合成されますか?
乙基三氟硼酸钾は、トリフLUオール酸カリウムとエチルブロミドを反応させて合成されます。この反応は高い選択性と収率を持ち、触媒を用いることで効率的に進行します。
2-フロウロ-5-クロロ-4-アミノフェノールはどのように保存すればよいですか?
2-フロウロ-5-クロロ-4-アミノフェノールは、直射日光を避けて冷却された暗所で保存し、密閉容器に保管してください。温度は常温か低温が適しています。
掲載誌
Green Chemistry

Green Chemistry provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on, but not limited to, the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998). Green chemistry is the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry is at the frontiers of this continuously-evolving interdisciplinary science and publishes research that attempts to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. Submissions on all aspects of research relating to the endeavour are welcome. The journal publishes original and significant cutting-edge research that is likely to be of wide general appeal. To be published, work must present a significant advance in green chemistry. Papers must contain a comparison with existing methods and demonstrate advantages over those methods before publication can be considered. For more information please see this Editorial. Coverage includes the following, but is not limited to: Design (e.g. biomimicry, design for degradation/recycling/reduced toxicity…) Reagents & Feedstocks (e.g. renewables, CO2, solvents, auxiliary agents, waste utilization…) Synthesis (e.g. organic, inorganic, synthetic biology…) Catalysis (e.g. homogeneous, heterogeneous, enzyme, whole cell…) Process (e.g. process design, intensification, separations, recycling, efficiency…) Energy (e.g. renewable energy, fuels, photovoltaics, fuel cells, energy storage, energy carriers…) Applications (e.g. electronics, dyes, consumer products, coatings, pharmaceuticals, preservatives, building materials, chemicals for industry/agriculture/mining…) Impact (e.g. safety, metrics, LCA, sustainability, (eco)toxicology…) Green chemistry is, by definition, a continuously-evolving frontier. Therefore, the inclusion of a particular material or technology does not, of itself, guarantee that a paper is suitable for the journal. To be suitable, the novel advance should have the potential for reduced environmental impact relative to the state of the art. Green Chemistry does not normally deal with research associated with 'end-of-pipe' or remediation issues.










![N-{3-[Benzyl(methyl)amino]propyl}-9-chloro-5,6,7,8-tetrahydro-2-acridinecarboxamide structure N-{3-[Benzyl(methyl)amino]propyl}-9-chloro-5,6,7,8-tetrahydro-2-acridinecarboxamide structure](https://static.chemtradehub.com/structs/142/1426944-49-1-1e4c.webp)

![[3-(2,6-Dichlorophenyl)-5-isopropyl-1,2-oxazol-4-yl]methanol structure [3-(2,6-Dichlorophenyl)-5-isopropyl-1,2-oxazol-4-yl]methanol structure](https://static.chemtradehub.com/structs/278/278597-30-1-5c79.webp)

