Role of different chain end types in pyrolysis of glucose-based anhydro-sugars and oligosaccharides
文献类型：期刊论文
| 作者 | Leng, Erwei2; Costa, Mario1; Peng, Yang2; Zhang, Yang2; Gong, Xun2; Zheng, Anqing3 ; Huang, Yuqian3; Xu, Minghou2
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| 刊名 | FUEL
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| 出版日期 | 2018-12-15 |
| 卷号 | 234页码:738-745 |
| ISSN号 | 0016-2361 |
| 关键词 | Cellulose Pyrolysis Levoglucosan end Reducing end Maltosan |
| DOI | 10.1016/j.fuel.2018.07.075 |
| 通讯作者 | Gong, Xun(gx@hust.edu.cn) ; Xu, Minghou(mhxu@hust.edu.cn) |
| 英文摘要 | This study investigates the pyrolysis characteristics of glucose-based anhydro-sugars (maltosan and levoglucosan) and oligosaccharides (cellobiose, cyclodextrin and cellulose) using TG-FTIR-MS and the role of the reducing and levoglucosan ends in cellulose pyrolysis. During the slow pyrolysis of two disaccharides (cellobiose and maltosan), dehydration reactions were strongly promoted at low temperatures due to the polymerization, which led to the earlier decomposition of maltosan and cellobiose compared with other carbohydrates. Compared with the reducing end in cellobiose, the levoglucosan end in maltosan enhanced the cleavage of glycosidic bonds, which led to the maximum weight loss of maltosan at a lower temperature (i.e. 232 degrees C) than that of cellobiose (i.e. 299 degrees C). Furthermore, because of the stability of the levoglucosan end, a significantly higher char yield was obtained after an obvious carbonization process at the expense of gaseous volatiles. Fast pyrolysis of these samples at 500 degrees C was also conducted on Py-GC/MS and yields based on carbon of 28 products were identified. The results show that the reducing end prompted the rupture of pyran rings for furan species, while the stable structure of the levoglucosan end strongly promoted the formation of pyrans such as levoglucosenone. Finally, a mechanism for cellulose pyrolysis is proposed, which takes into consideration the effects of the different chain ends. |
| WOS关键词 | LIGNOCELLULOSIC BIOMASS PYROLYSIS ; DENSITY-FUNCTIONAL THEORY ; CELLULOSE FAST PYROLYSIS ; BIO-OIL ; LOW-TEMPERATURES ; MODEL-COMPOUND ; SLOW PYROLYSIS ; REDUCING END ; PY-GC/MS ; LEVOGLUCOSAN |
| 资助项目 | National Natural Science Foundation of China[51776085] ; National Natural Science Foundation of China[51661125011] ; Fundacao para a Ciencia e a Tecnologia through IDMEC, under LAETA[UID/EMS/50022/2013] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000445253100077 |
| 资助机构 | National Natural Science Foundation of China ; Fundacao para a Ciencia e a Tecnologia through IDMEC, under LAETA |
| 源URL | [http://ir.giec.ac.cn/handle/344007/23903]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Gong, Xun; Xu, Minghou |
| 作者单位 | 1.Univ Lisbon, Inst Super Tecn, Dept Mech Engn, IDMEC, Lisbon, Portugal 2.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Hubei, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Leng, Erwei,Costa, Mario,Peng, Yang,et al. Role of different chain end types in pyrolysis of glucose-based anhydro-sugars and oligosaccharides[J]. FUEL,2018,234:738-745. |
| APA | Leng, Erwei.,Costa, Mario.,Peng, Yang.,Zhang, Yang.,Gong, Xun.,...&Xu, Minghou.(2018).Role of different chain end types in pyrolysis of glucose-based anhydro-sugars and oligosaccharides.FUEL,234,738-745. |
| MLA | Leng, Erwei,et al."Role of different chain end types in pyrolysis of glucose-based anhydro-sugars and oligosaccharides".FUEL 234(2018):738-745. |
入库方式： OAI收割
来源：广州能源研究所
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