Thermogravimetric characteristics and kinetics of herb residues catalyzed by potassium carbonate

doi:10.1016/j.jaap.2021.105170

	Thermogravimetric characteristics and kinetics of herb residues catalyzed by potassium carbonate
	Zhu, Hongyu 2,3; Lang, Lin 3; Fang, Gang 3,4; Na, Dingying 3; Yin, Xiuli 3; Yu, Xi 2; Wu, Chuangzhi 1,3,4; Bridgwater, Anthony V.2
刊名	JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
	2021-06-01
卷号	156 页码:11
关键词	Herb residues Catalytic pyrolysis Kinetic analysis Thermogravimetry Potassium carbonate
ISSN号	0165-2370
DOI	10.1016/j.jaap.2021.105170
通讯作者	Lang, Lin(langlin@ms.giec.ac.cn) ; Yu, Xi(x.yu3@aston.ac.uk)
英文摘要	Thermal conversion technology of Chinese herb residues (CHR) becomes one of the most promising technologies in the large-scale clean utilization of herb residues due to its short process and high efficiency. In this study, nonisothermal thermogravimetric analysis of CHR samples without and with K2CO3 (5%K- 9%K) was implemented at 300-1125 K and the heating rates of 10-40 K/min. A model-free Starink method was applied to evaluate the thermal decomposition behavior and apparent activation energy (E alpha) values. The estimated average activation energy decreases from 206.3 kJ/mol of raw CHR to 143.8-160.6 kJ/mol of CHR with K2CO3. K2CO3 catalysts significantly promote the catalytic pyrolysis reaction of the hemicellulose and cellulose of CHR samples at the main devolatilization stage from 425 K to 700 K with over 82.02 % mass loss. The pyrolysis temperature of the raw CHR is higher than traditional lignocellulosic biomass without decoction. By using the generalized masterplots method, it was found that the CHR pyrolysis could be described by a modified Dn-Jader model, but values of n and A tend to change measurably with heating rates for the CHR samples with catalysts due to the remarkably catalytic effect of K2CO3.
资助项目	National Key R&D Program of China[2019YFB1503905] ; National Natural Science Foundation of China[51676192] ; Guangdong Provincial Science and Technology Project[2019A050510031] ; College of Engineering and Physical Sciences, Aston University
WOS关键词	ACTIVATION-ENERGY MODEL ; SOLID-STATE REACTIONS ; PYROLYSIS KINETICS ; CO2 ; BEHAVIORS
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000663089700002
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Guangdong Provincial Science and Technology Project ; College of Engineering and Physical Sciences, Aston University
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/33367]
专题	中国科学院广州能源研究所
通讯作者	Lang, Lin; Yu, Xi
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Aston Univ, Coll Engn & Phys Sci, Energy & Bioprod Res Inst EBRI, Birmingham B4 7ET, W Midlands, England 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 4.Univ Sci & Technol China, Sch Engn Sci, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Hongyu,Lang, Lin,Fang, Gang,et al. Thermogravimetric characteristics and kinetics of herb residues catalyzed by potassium carbonate[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2021,156:11.
APA	Zhu, Hongyu.,Lang, Lin.,Fang, Gang.,Na, Dingying.,Yin, Xiuli.,...&Bridgwater, Anthony V..(2021).Thermogravimetric characteristics and kinetics of herb residues catalyzed by potassium carbonate.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,156,11.
MLA	Zhu, Hongyu,et al."Thermogravimetric characteristics and kinetics of herb residues catalyzed by potassium carbonate".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 156(2021):11.