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

doi:10.1016/j.joei.2017.06.002

	Quantitative comparison of different chemical pretreatment methods on chemical structure and pyrolysis characteristics of corncobs
	Zheng, Anqing 1,2,3; Zhao, Kun 1,2,3,4; Li, Luwei 5; Zhao, Zengli 1,2,3; Jiang, Liqun 1,2,3; Huang, Zhen 1,2,3; Wei, Guoqiang 1,2,3; He, Fang 1,2,3; Li, Haibin 1,2,3
刊名	JOURNAL OF THE ENERGY INSTITUTE
	2018-10-01
卷号	91 期号:5 页码:676-682
关键词	Pretreatment Pyrolysis Corncobs Structure Levoglucosan
ISSN号	1743-9671
DOI	10.1016/j.joei.2017.06.002
通讯作者	Zhao, Zengli(zhaozl@ms.giec.ac.cn)
英文摘要	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.
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关键词	BIO-OIL ; HYDROTHERMAL PRETREATMENT ; BIOMASS ; WOOD ; CELLULOSE ; DECOMPOSITION ; TORREFACTION ; HYDROLYSIS ; CHEMISTRY ; BIOFUELS
WOS研究方向	Energy & Fuels
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000445984100005
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province, China ; Science and Technology Planning Project of Guangdong Province, China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24061]
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
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.