Pyrolysis of lignin for phenols with alkaline additive

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	Pyrolysis of lignin for phenols with alkaline additive
	Peng, Cuina 1,2; Zhang, Guangyi 1; Yue, Junrong 1; Xu, Guangwen 1
刊名	FUEL PROCESSING TECHNOLOGY
	2014-08-01
卷号	124 期号:1 页码:212-221
关键词	Lignin Catalytic pyrolysis Alkaline additive Phenol Black liquor Biomass
ISSN号	0378-3820
其他题名	Fuel Process. Technol.
中文摘要	This study is devoted to investigating the effect of alkaline additives on lignin pyrolysis for producing phenols. The effects of different types and amounts of alkaline additives, i.e., 0-20 wt.% NaOH, KOH, Na2CO3 or K2CO3, on lignin pyrolysis were tested in a fixed bed reactor. The chemicals in the pyrolysis liquid from a commercial alkali lignin with and without alkaline additive were mainly phenols including 2-methoxy-phenol, 2,6-dimethoxy-phenol, alkyl-phenols (free of methoxyl group) and 2-methoxy-4-alkyl-phenols. More vanillin and dimethoxy-benzene appeared in the pyrolysis liquid of alkali lignin and lignin purified from black liquor, respectively. While carbonate additives facilitated the production of methxoy-phenols, more alkyl-phenols were formed with the hydroxide additives. Analysis showed that all the alkaline additives promoted the reactions of decarboxylation or decarbonylation and the removal of unsaturated alkyl branch chains. The strong alkalescence of NaOH and KOH facilitated more deoxygenation of methoxyl groups so that there were more phenols free of methoxyl groups. The pyrolysis of PL resulted in the liquid yields of up to 30 wt.% (dry base), and the content of phenols was above 80% in the liquid. (C) 2014 Elsevier B.V. All rights reserved.
英文摘要	This study is devoted to investigating the effect of alkaline additives on lignin pyrolysis for producing phenols. The effects of different types and amounts of alkaline additives, i.e., 0-20 wt.% NaOH, KOH, Na2CO3 or K2CO3, on lignin pyrolysis were tested in a fixed bed reactor. The chemicals in the pyrolysis liquid from a commercial alkali lignin with and without alkaline additive were mainly phenols including 2-methoxy-phenol, 2,6-dimethoxy-phenol, alkyl-phenols (free of methoxyl group) and 2-methoxy-4-alkyl-phenols. More vanillin and dimethoxy-benzene appeared in the pyrolysis liquid of alkali lignin and lignin purified from black liquor, respectively. While carbonate additives facilitated the production of methxoy-phenols, more alkyl-phenols were formed with the hydroxide additives. Analysis showed that all the alkaline additives promoted the reactions of decarboxylation or decarbonylation and the removal of unsaturated alkyl branch chains. The strong alkalescence of NaOH and KOH facilitated more deoxygenation of methoxyl groups so that there were more phenols free of methoxyl groups. The pyrolysis of PL resulted in the liquid yields of up to 30 wt.% (dry base), and the content of phenols was above 80% in the liquid. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
关键词[WOS]	BLACK LIQUOR GASIFICATION ; CATALYTIC FAST PYROLYSIS ; BIO-OIL ; ACTIVATED CARBON ; PY-GC/MS ; BIOMASS ; FUELS ; HYDRODEOXYGENATION ; TEMPERATURE ; COMPONENTS
收录类别	SCI
原文出处	://WOS:000336879800025
语种	英语
WOS记录号	WOS:000336879800025
公开日期	2014-08-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/10948]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Peng, Cuina,Zhang, Guangyi,Yue, Junrong,et al. Pyrolysis of lignin for phenols with alkaline additive[J]. FUEL PROCESSING TECHNOLOGY,2014,124(1):212-221.
APA	Peng, Cuina,Zhang, Guangyi,Yue, Junrong,&Xu, Guangwen.(2014).Pyrolysis of lignin for phenols with alkaline additive.FUEL PROCESSING TECHNOLOGY,124(1),212-221.
MLA	Peng, Cuina,et al."Pyrolysis of lignin for phenols with alkaline additive".FUEL PROCESSING TECHNOLOGY 124.1(2014):212-221.