Effects of Fe<sub>2</sub>O<sub>3</sub> on pyrolysis reactivity of demineralized higher rank coal and its char structure

GONG Xuzhong; GUO Zhancheng; WANG Zhi

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Effects of Fe₂O₃ on pyrolysis reactivity of demineralized higher rank coal and its char structure

更新时间：2025-12-10

- Effects of Fe₂O₃ on pyrolysis reactivity of demineralized higher rank coal and its char structure
- CIESC Journal Issue 9, Pages: 2321-2326(2009)
- 作者机构：
  
  1. 中国科学院过程工程研究所多相复杂系统国家重点实验室
  2. 中国科学院研究生院
  3. 北京科技大学循环与生态冶金教育部重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 September 2009，
  
  Published：05 September 2009
- 稿件说明：
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GONG Xuzhong, GUO Zhancheng, WANG Zhi. Effects of Fe₂O₃ on pyrolysis reactivity of demineralized higher rank coal and its char structure[J]. CIESC Journal, 2009, (9): 2321-2326.
DOI：

GONG Xuzhong, GUO Zhancheng, WANG Zhi. Effects of Fe₂O₃ on pyrolysis reactivity of demineralized higher rank coal and its char structure[J]. CIESC Journal, 2009, (9): 2321-2326. DOI：

摘要

利用热天平研究了共混合法负载Fe2O3高变质程度脱灰煤的热解反应性，结果表明煤粉负载Fe2O3后热解反应性高于无负载的热解反应性。负载Fe2O3煤样在程序升温加热的马弗炉中制备出半焦，利用FTIR、XRD和RAMAN 等分析了半焦结构。由TG和FTIR可知，负载Fe2O3煤样热解时，热解转化率增加，热解后自由基增加。由XRD可知，Fe2O3没有使得煤样半焦的002峰衍射角发生明显变化，但使La和Lc参数明显降低，说明半焦的微晶结构石墨化程度降低。另外，在XRD分析谱图中发现部分Fe2O3被还原成FeO。由RAMAN可知，Fe2O3使半焦的G峰峰面积降低，D峰峰面积增加，说明半焦的有机结构有序化程度降低。

Abstract

The pyrolysis reactivity of demineralized higher rank coal loaded with Fe2O3 by using co-mixing was investigated with thermo-gravimetric analyzer

and it was indicated that pyrolysis reactivity of the sample loaded with Fe2O3 was higher than that of the sample without Fe2O3.Chars were prepared from the two coal samples in a temperature programmed muffle furnace

and their structures were analyzed by using FTIR

XRD and RAMAN.TG and FTIR results showed an increase of pyrolysis conversion and free radicals during pyrolysis of demineralized coal with Fe2O3.XRD revealed that diffraction angle of 002 peak did not change obviously

while by contrast

La and Lc decreased by loading with Fe2O3

indicating decreasing degree of graphitization for microcrystalline structure of char.In addition

parts of Fe2O3 were reduced to FeO as shown in XRD.RAMAN spectroscopy showed decreasing area of G band and increasing area of D band for char from demineralized anthracite loaded with Fe2O3

indicating that ordering of char was decreased by Fe2O3.

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Effects of Fe2O3 on pyrolysis reactivity of demineralized higher rank coal and its char structure

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摘要

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Effects of Fe₂O₃ on pyrolysis reactivity of demineralized higher rank coal and its char structure