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Solvent-Assisted Adsorption of Cellulose on a Carbon Catalyst as a Pretreatment Method for Hydrolysis to Glucose
| Title: | Solvent-Assisted Adsorption of Cellulose on a Carbon Catalyst as a Pretreatment Method for Hydrolysis to Glucose |
| Authors: | Shrotri, Abhijit Browse this author →KAKEN DB | | Eguchi, Kiko Browse this author | | Mahardiani, Lina Browse this author | | Kobayashi, Hirokazu Browse this author | | Yamashita, Masakuni Browse this author | | Yagita, Hiroshi Browse this author | | Fukuoka, Atsushi Browse this author |
| Keywords: | cellulose | | hydrolysis | | glucose | | carbon catalyst | | phosphoric acid |
| Issue Date: | Mar-2023 |
| Publisher: | MDPI |
| Journal Title: | Chemistry |
| Volume: | 5 |
| Issue: | 1 |
| Start Page: | 381 |
| End Page: | 392 |
| Publisher DOI: | 10.3390/chemistry5010028 |
| Abstract: | Cellulose hydrolysis to glucose using a heterogeneous catalyst is a necessary step in producing bio-based chemicals and polymers. The requirement for energy-intensive pretreatments, such as ball milling, to increase the reactivity of cellulose is one of the major issues in this area. Here, we show that by using solvent-assisted adsorption as a pretreatment step, cellulose can be adsorbed on the surface of a carbon catalyst. For adsorption pretreatment, phosphoric acid (H3PO4) performed better than other solvents such as sulfuric acid (H2SO4), tetrabutylammonium fluoride/dimethyl sulfoxide (TBAF/DMSO) and 1-butyl-3-methylimidazolium chloride ([BMMI]Cl). Hydrolysis after the adsorption of cellulose and the removal of H3PO4 produced a 73% yield of glucose. Partial hydrolysis of cellulose in H3PO4 before adsorption increased the final glucose yield. The glucose yield was proportional to the number of weakly acidic functional groups on the carbon catalyst, indicating the reaction was heterogeneously catalyzed. In a preliminary lab-scale life-cycle analysis (LCA), greenhouse gas (GHG) emissions per kg of glucose produced through the hydrolysis of cellulose were calculated. The H3PO4-assisted adsorption notably reduces GHG emissions compared to the previously reported ball milling pretreatment. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/89782 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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