Quantitative comparison of different chemical pretreatment methods on chemical structure and pyrolysis characteristics of corncobs

doi:10.1016/j.joei.2017.06.002

GIEC OpenIR

	Quantitative comparison of different chemical pretreatment methods on chemical structure and pyrolysis characteristics of corncobs
	Zheng, Anqing1,2,3 ; Zhao, Kun1,2,3,4 ; Li, Luwei 5; Zhao, Zengli1,2,3 ; Jiang, Liqun 1,2,3; Huang, Zhen 1,2,3; Wei, Guoqiang 1,2,3; He, Fang1,2,3 ; Li, Haibin1,2,3
	2018-10-01
发表期刊	JOURNAL OF THE ENERGY INSTITUTE
ISSN	1743-9671
卷号	91 期号:5 页码:676-682
通讯作者	Zhao, Zengli(zhaozl@ms.giec.ac.cn)
摘要	In order to identify the effects of different chemical pretreatment methods on structure changes of corncobs and their subsequent pyrolysis characteristics, the chemical pretreatment of corncobs was performed using different concentrations of sodium hydroxide (NaOH), sulfuric acid (H2SO4), and hydrogen peroxide (H2O2) solutions. The structure changes of corncobs were characterized by elemental analysis, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD). The pyrolysis characteristics of raw and pretreated corncobs were conducted on thermogravimetric analyzer (TGA) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). TG/DTG analysis of raw and pretreated corncobs demonstrated that the rank order for the ease of pyrolysis was untreated < 1% NaOH < 1% H2O2 < 2% NaOH < 2% H2SO4 < 1% H2SO4. Py-GC/MS analysis showed that chemical pretreatment can effectively promote the production of furans and levoglucosan (LG) and inhibit the formation of acetic acid, ketones and phenols. The rank order of LG yields from untreated and pretreated corncobs was untreated < 1% NaOH < 2% NaOH < 1% H2O2 < 1% H2SO4 < 2% H2SO4. The maximum yield of LG (15.01%) was obtained by fast pyrolysis of corncobs pretreated using 2% H2SO4. It was 18.53 times the yield of LG from untreated corncobs. The results could be mainly attributed to the passivation of alkali metal and alkali earth metal and the removal of hemicellulose and lignin fractions during pretreatment. (C) 2017 Energy Institute. Published by Elsevier Ltd. All rights reserved.
关键词	Pretreatment Pyrolysis Corncobs Structure Levoglucosan
DOI	10.1016/j.joei.2017.06.002
关键词[WOS]	BIO-OIL ; HYDROTHERMAL PRETREATMENT ; BIOMASS ; WOOD ; CELLULOSE ; DECOMPOSITION ; TORREFACTION ; HYDROLYSIS ; CHEMISTRY ; BIOFUELS
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21406227] ; National Natural Science Foundation of China[51376186] ; Natural Science Foundation of Guangdong Province, China[2014A030313672] ; Science and Technology Planning Project of Guangdong Province, China[2014B020216004] ; Science and Technology Planning Project of Guangdong Province, China[2015A020215024]
WOS研究方向	Energy & Fuels
项目资助者	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province, China ; Science and Technology Planning Project of Guangdong Province, China
WOS类目	Energy & Fuels
WOS记录号	WOS:000445984100005
出版者	ELSEVIER SCI LTD
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/24062
专题	中国科学院广州能源研究所
通讯作者	Zhao, Zengli
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Zheng, Anqing,Zhao, Kun,Li, Luwei,et al. Quantitative comparison of different chemical pretreatment methods on chemical structure and pyrolysis characteristics of corncobs[J]. JOURNAL OF THE ENERGY INSTITUTE,2018,91(5):676-682.
APA	Zheng, Anqing.,Zhao, Kun.,Li, Luwei.,Zhao, Zengli.,Jiang, Liqun.,...&Li, Haibin.(2018).Quantitative comparison of different chemical pretreatment methods on chemical structure and pyrolysis characteristics of corncobs.JOURNAL OF THE ENERGY INSTITUTE,91(5),676-682.
MLA	Zheng, Anqing,et al."Quantitative comparison of different chemical pretreatment methods on chemical structure and pyrolysis characteristics of corncobs".JOURNAL OF THE ENERGY INSTITUTE 91.5(2018):676-682.