| 煤显微组分热解过程中脂肪氢的演化特征及其动力学 |
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| 引用本文： | 常海洲,曾凡桂.煤显微组分热解过程中脂肪氢的演化特征及其动力学[J].山西大学学报(自然科学版),2011,34(2):253-256. |
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| 作者姓名： | 常海洲 曾凡桂 |
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| 作者单位： | 1. 上海理工大学,理学院,上海,200093
2. 太原理工大学,煤科学与技术教育部及山西省重点实验室,地球科学与工程系,山西,太原,030024 |
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| 基金项目： | 国家自然科学基金(410721164077209740572094); 高等学校博士点基金(20091402110002) |
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| 摘 要： | 采用热台与FTIR考察了平朔煤和神东煤显微组分热解过程中脂肪氢的演化特征.结果表明,随着热解温度的升高,脂肪氢经历了快速减少、缓慢减少和基本不变三个阶段,揭示出煤大分子体系依次发生了脂肪碳氢链的裂解、环烷化反应、芳构化反应、芳香结构氢化反应以及芳香缩合反应等;动力学分析表明,脂肪氢脱除反应的活化能较低,与反应体系中存在大量自由基有关;甲基与亚甲基的相对脱除速率随温度呈现M型关系.
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| 关 键 词： | 显微组分 脂肪氢 热解 煤 |
Evolution Characteristics and Kinetics of the Aliphatic Hydrogen in Coal Macerals during Pyrolysis |
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| CHANG Hai-zhou,ZENG Fan-gui.Evolution Characteristics and Kinetics of the Aliphatic Hydrogen in Coal Macerals during Pyrolysis[J].Journal of Shanxi University (Natural Science Edition),2011,34(2):253-256. |
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| Authors: | CHANG Hai-zhou ZENG Fan-gui |
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| Institution: | CHANG Hai-zhou1,ZENG Fan-gui2(1.College of Science,University of Shanghai for Science and Technology,Shanghai 200093,China,2.Key Laboratory of Coal Science and Technology,Ministry of Education and Shanxi Province,Department of Earth Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China) |
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| Abstract: | The thermal evolution characteristics and kinetics of the aliphatic hydrogen in coal macerals were investigated by using heating stage and FTIR.The results showed that three stages were involved in the variation of the aliphatic hydrogen content:rapid decrease stage,slow decrease stage and changeless stage.With increasing temperature,the cracking of aliphatic carbochain,the cyclialkylation,the aromatization reaction,the hydrogenation of aromatic structure and the aromatic condensation reaction would take pl... |
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| Keywords: | macerals aliphatic hydrogen pyrolysis kinetics |
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