ffects of cations, anions and H+ concentration of acidic ionic liquids on the valorization of polysaccharides into furfural
| Title | ffects of cations, anions and H+ concentration of acidic ionic liquids on the valorization of polysaccharides into furfural |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Matsagar, BM, Dhepe, PL |
| Journal | New Journal of Chemistry |
| Volume | 41 |
| Issue | 14 |
| Pagination | 6137-6144 |
| Date Published | JUL |
| Type of Article | Article |
| Abstract | The valorization of hemicellulose into valuable chemicals, such as C5 sugars and furfural, in a one-pot fashion is crucial. In this work, acidic ionic liquids in the presence of water showed high yields of C5 sugars (>80%) with >99% conversion of hemicelluloses at 160 degrees C. With a water + toluene biphasic solvent system, within 4 h, an 85% furfural yield was obtained directly from hemicellulose in a one-pot fashion using a catalytic amount of 1-methyl-3-(3-sulfopropyl)-imidazolium hydrogen sulfate. It was seen that Bronsted acidic ionic liquids (BAILs) perform better than solid acid [Faujasite and Mordenite zeolites; ion exchange resin, Amberlyst-15] and mineral catalysts [HCl and H2SO4]. The higher activity of BAILs compared to solid acids and mineral acids was correlated to the Hammett acidity function (Ho) and ion-dipole type of interactions. The catalysts were characterized using NMR (H-1 and C-13), elemental analysis and TGA to confirm that they were stable under reaction conditions and were thus recyclable. |
| DOI | 10.1039/c7nj00342k |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.277 |
Divison category:
Catalysis and Inorganic Chemistry
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