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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Ren, Huifang Girisuta, Buana Zhou, Yonggui Liu, Li |
| Description | Country affiliation: China Author Affiliation: Ren H ( Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.); Girisuta B ( Institute of Chemical and Engineering Sciences, Jurong Island 627833, Singapore.); Zhou Y ( Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.); Liu L ( Dalian University of Technology, Dalian 116024, China. Electronic address: lliu@dlut.edu.cn.) |
| Abstract | Cellulose depolymerization to levulinic acid (LA) was catalyzed by acidic ionic liquids (ILs) selectively and recyclably under hydrothermal conditions. The effects of reaction temperature, time, water amount and cellulose intake were investigated. Dilution effect becomes more pronounced at lower cellulose intake, dramatically improving the yield of LA to 86.1%. A kinetic model has been developed based on experimental data, whereby a good fit was obtained and kinetic parameters were derived. The relationships between IL structure, polymeric structure and depolymerization efficiency were established, shedding light on the in-depth catalytic mechanism of IL, inclusive of acidity and hydrogen bonding ability. The LA product can be readily separated through extraction by methyl isobutyl ketone (MIBK) and IL can be reused over five cycles without loss of activity. This environmentally friendly methodology can be applied to selective production of LA from versatile biomass feedstocks, including cellulose and derivatives, glucose, fructose and HMF. |
| File Format | HTM / HTML |
| ISSN | 01448617 |
| Volume Number | 117 |
| e-ISSN | 18791344 |
| Journal | Carbohydrate Polymers |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-03-06 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry__semicolon__materials Discipline Science Cellulose Chemistry Ionic Liquids Levulinic Acids Chemical Synthesis Catalysis Kinetics Molecular Structure Particle Size Polymerization Surface Properties Temperature Time Factors Water Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Polymers and Plastics |
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