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Effect of molecular structure of cation and anions of ionic liquids and co-solvents on selectivity of 5-hydroxymethylfurfural from sugars, cellulose and real biomass
被引:24
作者:
Naz, Sadia
[1
]
Uroos, Maliha
[1
]
Muhammad, Nawshad
[2
]
机构:
[1] Univ Punjab, Ctr Res Ion Liquids, Sch Chem, Lahore 54590, Pakistan
[2] Khyber Med Univ Peshawar, Dept Dent Mat, Inst Med Sci, Peshawar, Pakistan
关键词:
5-Hydroxymethylfurfural;
Platform chemical;
Biorefinery;
Bronsted Lewis acidic ionic liquid;
Organic electrolyte solutions;
Co-solvents;
LEVULINIC ACID;
REDUCING SUGARS;
CONVERSION;
FRUCTOSE;
TRANSFORMATION;
DEHYDRATION;
WATER;
LIGNOCELLULOSE;
DECOMPOSITION;
DISSOLUTION;
D O I:
10.1016/j.molliq.2021.116523
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
The concept of biorefinery still requires advancements in process development for energy and materials. Ionic liquids have been successfully used for several biorefinery applications including high yield synthesis of biofuels and value added platform chemicals. Designing suitable ionic liquid that is efficient in terms of cost as well as product selectivity is still highly needed. This study is carried out to check the effect of different anions of Bronsted acidic ionic liquids (BAILs), Bronsted Lewis acidic ionic liquids (BLAILs), Lewis acidic ionic liquids (LAILs) as well as organic electrolyte solutions (OES) for 5-HMF selectivities from monosaccharides, polysaccharides as well as lignocellulosic composite. Different variables and parameters such as Lewis acidity of anions, alkyl side chain of ionic liquid, metal chloride type and loading, time, temperature, substrate loading, polar protic and aprotic solvents are thoroughly studied for process optimization. Polar protic solvents added in [C1C4SO3HPy] based ionic liquids with CH3COO- and Cl- anions yielded 94 and 80% 5-HMF from fructose and glucose respectively in the presence of AlCl3 as Lewis acid. C4SO3H side chain yielding high from fructose and glucose is inefficient for conversion of cellulose and lignocellulose. High product selectivity from these biopolymers is achieved using butyl side chain with 3-methylpyridinium cation and chlorochromate anion. (C) 2021 Elsevier B.V. All rights reserved.
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