| 학회 | 한국공업화학회 |
| 학술대회 | 2016년 봄 (05/02 ~ 05/04, 여수 엑스포 컨벤션) |
| 권호 | 20권 1호 |
| 발표분야 | (국제협력)JPI-KSIEC Joint Symposium |
| 제목 | Production of valuable chemicals from cellulose, hemicellulose, and lignin in biomasscatalysts |
| 초록 | Conversion of nonedible biomass into valuable chemicals has greatly attracted attention for establishing the sustainable society because of its renewability, abundance, and inedibility. Lignocellulosic biomass is composed of cellulose, hemicellulose, and lignin. Direct catalytic conversion of cellulose and hemicellulose in lignocellulosic biomass to valuable chemicals is highly desirable to open new possibility for the use of lignocellulosic biomass. In this paper, we have succeeded in converting hemicellulose, cellulose, and lignin into useful chemicals using supported metal catalysts in step-by-step procedures. At first, we found a technique for the conversion of cellulose and hemicellulose in biomass chips to six-carbon (C6) and five-carbon (C5) sugar alcohols by supported metal catalysts with hydrogen [1, 2]. Without a delignification pretreatment by acid, the cellulose and hemicellulose in the wood chips were converted to sugar alcohols and lignin could be obtained as solid after the reaction. Next we investigated the chemistry for intramolecular dehydration of the sugar alcohols in high-temperature liquid water into valuable chemicals to utilize biomass resources. The intramolecular dehydration of sorbitol and mannitol can provide valuable diols, isosorbide and isomannide, by bimolecular dehydration. Isosorbide is a drug medicine used as osmotic diuretics and blood-pressure-lowering drugs. Also, isosorbide has attracted a great deal of attention because poly(ethylene terephthalate) (PET) containing isosorbide has higher glass transition temperatures than pure PET, broadening the applications of polyesters. Isomannide has also commanded attention as a raw material for drugs and an additive for polymers. The isosorbide and isomannide should be alternatives of petroleum-based monomers; however, syntheses of isosorbide and isomannide from sorbitol and mannitol are generally done with strong acids, which cause a serious corrosion and require neutralization processes. We found that isosorbide and isomannide could be produced from sorbitol and mannitol dehydration in high-temperature liquid water without adding any acid catalysts [3, 4], which could enhance the prospect for biomass-based monomers. References [1] A. Yamaguchi, O. Sato, N. Mimura, Y. Hirosaki, H. Kobayashi, A. Fukuoka, M. Shirai, Catal. Commun., 54 (2014) 22-26, [2] A. Yamaguchi, O. Sato, N. Mimura, M. Shirai, Catal. Today, in press, [3] A. Yamaguchi, N. Hiyoshi, O. Sato, M. Shirai, Green Chem., 13 (2011) 873-881, [4] A. Yamaguchi, O. Sato, N. Mimura, M. Shirai, RSC Adv., 4 (2014) 45575-45578. |
| 저자 | Aritomo Yamaguchi1, Naoki Mimura2, Masayuki Shirai3 |
| 소속 | 1Research Institute for Chemical Process Technology, 2National Institute of Advanced Industrial Science and Technology (AIST) / JST, 3PRESTO |
| 키워드 | valuable chemicals; cellulose; hemicellulose; lignin; biomasscatalysts |
