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Fabrication of Magnetic Catalyst $Fe_{3}O_{4}-SiO_{2}-V_{3}$ and Its Application on Lignin Extraction from Corncob in Deep Eutectic Solvent
| Content Provider | MDPI |
|---|---|
| Author | Yuan, Maonan Wang, Zhen Liu, Yu Yang, Guihua |
| Copyright Year | 2021 |
| Description | Fe3O4-SiO2-V3 was prepared by deposited H6PMo9V3O40 on Fe3O4-SiO2 and employed as a catalyst to extract lignin from corncob in deep eutectic solvent (choline chloride/lactic acid = 1/10). Batch experiments were conducted in an autoclave under the conditions of 500 kPa, 90–130 °C and 15 h, while the dosage of the catalyst was set as a variable. Results indicated that the catalyst could effectively improve the qualities of the lignin, while the characteristics of the lignin showed prominent changes with the participation of the catalyst: the extraction rate increased from 71.65% to 98.13%, the purity was improved from 85.62% to 97.09%, and both the number average molecular weight and the weight average molecular weight also decreased significantly. Besides, the molecular distribution of the lignin achieved from the CC-LA-Fe-Si-V3 reaction system was found to be more highly concentrated (Polydispersity index = 1.746). Results from 2D NMR HSQC analysis indicated that lignin fractions achieved from the CC-LA-Fe-Si-V3 system showed distinct destruction involving C2-H2 in guaiacyl units (G), C5-H5 in guaiacyl units (G), and the Cγ-Hγ in γ-hydroxylated β-O-4′ substructures, but little changes in the Cγ-Hγ in phenylcoumaran substructures. |
| Starting Page | 1545 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym13101545 |
| Journal | Polymers |
| Issue Number | 10 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-05-12 |
| Access Restriction | Open |
| Subject Keyword | Polymers Paper and Wood Lignin Extraction Magnetic Catalyst Deep Eutectic Solvent Corncob |
| Content Type | Text |
| Resource Type | Article |
