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Variation of Char Structure during Anthracite Pyrolysis Catalyzed by Fe2O3 and Its Influence on Char Combustion Reactivity
Gong, Xuzhong1,2; Guo, Zhancheng1,3; Wang, Zhi1; Guo, ZC
2009-09-01
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume23Issue:0Pages:4547-4552
AbstractEffects of Fe2O3 on the pyrolysis reactivity of demineralized anthracite were investigated by a thermogravimetric analyzer, indicating that pyrolysis reactivity of Fe2O3 loaded demineralized anthracite was higher than that of raw demineralized anthracite when temperature is over 500 degrees C, Chars were prepared from the two coal samples in muffle with heating progress, and their structures were analyzed using SEM, FTIR, XRD, and Raman. FTIR results showed that absorption peaks of functional groups on the surface of char from catalytic pyrolysis at 700 T were more than that of char from noncatalytic pyrolysis. Raman results demonstrated values Of (I-D3 + I-D4)/I-G,I- of chars from catalytic pyrolysis and noncatalytic pyrolysis were 4.76 and 3.86, respectively, indicating that ordering of the char was decreased by Fe2O3. XRD analysis revealed that diffraction angle of the 002 peak did not shift; however, 1,,, and 4, decreased, indicating degree of graphitization for microcrystalline structure of char from catalytic pyrolysis was decreased, The results of FTIR, XRD, and Raman of the chat, showed that catalytic pyrolysis improved the formation of free radicals, while hindered polymerization and forming of basic structure units. Finally, combustion reactivity of the three chars, including char of raw demineralized anthracite (char-A), char Of Fe2O3-loaded demineralized anthracite (char-B), and char. Of Fe2O3-loaded demineralized anthracite washed by HCl (char-C), was investigated using TG and indicated that their active order was char-B > char- C > char-A, The results corroborated that Fe2O3 changed structure of anthracite char and improved combustion reactivity.
KeywordVictorian Brown-coal Raman-spectroscopy Gasification Alkali Volatilization Evolution Carbon
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/ef900550w
Indexed BySCI
Language英语
WOS KeywordVICTORIAN BROWN-COAL ; RAMAN-SPECTROSCOPY ; GASIFICATION ; ALKALI ; VOLATILIZATION ; EVOLUTION ; CARBON
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000270671500043
Citation statistics
Cited Times:68[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6591
Collection多相复杂系统国家重点实验室
Corresponding AuthorGuo, ZC
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Chinese Acad Sci, China Grad Univ, Beijing 100049, Peoples R China
3.Univ Sci & Technol Beijing, Key Lab Ecol & Recycle Met, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Gong, Xuzhong,Guo, Zhancheng,Wang, Zhi,et al. Variation of Char Structure during Anthracite Pyrolysis Catalyzed by Fe2O3 and Its Influence on Char Combustion Reactivity[J]. ENERGY & FUELS,2009,23(0):4547-4552.
APA Gong, Xuzhong,Guo, Zhancheng,Wang, Zhi,&Guo, ZC.(2009).Variation of Char Structure during Anthracite Pyrolysis Catalyzed by Fe2O3 and Its Influence on Char Combustion Reactivity.ENERGY & FUELS,23(0),4547-4552.
MLA Gong, Xuzhong,et al."Variation of Char Structure during Anthracite Pyrolysis Catalyzed by Fe2O3 and Its Influence on Char Combustion Reactivity".ENERGY & FUELS 23.0(2009):4547-4552.
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