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Formation of humins during degradation of carbohydrates and furfural derivatives in various solvents

文献类型：期刊论文

作者Shi, Ning4; Liu, Qiying1,2,3; Cen, Hu4; Ju, Rongmei4; He, Xiong4; Ma, Longlong1,2,3
刊名BIOMASS CONVERSION AND BIOREFINERY
出版日期2020-06-01
卷号10期号:2页码:277-287
关键词Carbohydrates Furfural derivatives Humins Condensation alpha-Carbonyl aldehyde
ISSN号2190-6815
DOI10.1007/s13399-019-00414-4
通讯作者Shi, Ning(shining@git.edu.cn)
英文摘要Humins are undesired solids formed during the hydrothermal degradation of carbohydrates. In order to reveal the mechanism of formation of humins, we studied the degradation behavior of 11 model compounds including carbohydrates and furfural derivatives, within water and various pure organic solvents as reaction media. All the studied carbohydrates could generate solid humins in both water and studied organic solvents except ethanol, while the furfural derivatives could generate solid humins in only water. The results could be explained by regarding the formed alpha -carbonyl aldehydes and alpha,beta -unsaturated aldehydes as primary precursors for formation of humins. Furfural derivatives could generate chain alpha -carbonyl aldehydes (for example, 6-hydroxy-2,5-dioxohexanal from 5-hydroxymethylfurfural and 2-oxopentanedial from furfural) through hydrolytic ring opening reaction; thus, water is essential for these furfural derivatives to generate humins. As for carbohydrates, they could generate alpha -carbonyl aldehydes and alpha,beta -unsaturated aldehydes through simple step of beta -elimination in all solvents; thus, they could form humins in both water and studied organic solvents except ethanol. Ethanol could react with alpha -carbonyl aldehydes by acetalization; thus, the condensation between alpha -carbonyl aldehydes was suppressed in ethanol, leading to few humins formation from carbohydrates. Based on the above analysis, we proposed that the formed alpha -carbonyl aldehydes and alpha,beta -unsaturated aldehydes should be the primary precursor of humins.
WOS关键词MOLECULAR-STRUCTURE ; LEVULINIC ACID ; BY-PRODUCTS ; CATALYZED CONVERSION ; CELLULOSE ; GLUCOSE ; BIOMASS ; SUGARS ; HYDROLYSIS ; VALORIZATION
资助项目Guizhou province science and technology plan project[[2017]5789-08] ; National Natural Science Foundation of China[51576199] ; Natural Science Foundation of Guangdong Province[2017A030308010]
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000538051200006
出版者SPRINGER HEIDELBERG
资助机构Guizhou province science and technology plan project ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province
源URL[http://ir.giec.ac.cn/handle/344007/27205]  
专题中国科学院广州能源研究所
通讯作者Shi, Ning
作者单位1.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
4.Guizhou Inst Technol, Chem Engn Inst, Guiyang 550003, Guizhou, Peoples R China
推荐引用方式
GB/T 7714		 Shi, Ning,Liu, Qiying,Cen, Hu,et al. Formation of humins during degradation of carbohydrates and furfural derivatives in various solvents[J]. BIOMASS CONVERSION AND BIOREFINERY,2020,10(2):277-287.
APA Shi, Ning,Liu, Qiying,Cen, Hu,Ju, Rongmei,He, Xiong,&Ma, Longlong.(2020).Formation of humins during degradation of carbohydrates and furfural derivatives in various solvents.BIOMASS CONVERSION AND BIOREFINERY,10(2),277-287.
MLA Shi, Ning,et al."Formation of humins during degradation of carbohydrates and furfural derivatives in various solvents".BIOMASS CONVERSION AND BIOREFINERY 10.2(2020):277-287.

入库方式： OAI收割

来源：广州能源研究所

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