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

doi:10.1007/s13399-019-00414-4

	Formation of humins during degradation of carbohydrates and furfural derivatives in various solvents
	Shi, Ning 1; Liu, Qiying 2,3,4; Cen, Hu 1; Ju, Rongmei 1; He, Xiong 1; Ma, Longlong 2,3,4
刊名	BIOMASS CONVERSION AND BIOREFINERY
	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
DOI	10.1007/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.
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关键词	MOLECULAR-STRUCTURE ; LEVULINIC ACID ; BY-PRODUCTS ; CATALYZED CONVERSION ; CELLULOSE ; GLUCOSE ; BIOMASS ; SUGARS ; HYDROLYSIS ; VALORIZATION
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000538051200006
资助机构	Guizhou province science and technology plan project ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province
内容类型	期刊论文
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.Guizhou Inst Technol, Chem Engn Inst, Guiyang 550003, Guizhou, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, 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.