Home

Citation: LI Mei-Fen, ZENG Fan-Gui, SUN Bei-Lei, QI Fu-Hui. Evolution Kinetics of Hydrogen Generation from Low Rank Coal Pyrolysis and Its Relation to the First Coalification Jump[J]. Acta Physico-Chimica Sinica, ;2009, 25(12): 2597-2603. doi: 10.3866/PKU.WHXB20091218 shu

Evolution Kinetics of Hydrogen Generation from Low Rank Coal Pyrolysis and Its Relation to the First Coalification Jump

1.
Key Laboratory of Coal Science&Technology of Ministry of Education & Shanxi Province, Department of Earth Science & Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China

Received Date: 18 June 2009
Available Online: 4 November 2009

The open system pyrolysis characteristics of 7 low rank coals and the evolution kinetics of H2 and its relation to the first coalification jump were determined using a thermogravimetric analyzer coupled to a quadrupole mass spectrometer (TG/MS). Results showed that both the coal pyrolysis characteristics and the evolution kinetics of H2 are strongly related to the first coalification jump, which is demonstrated by three aspects: the weight loss rate indicates an abrupt change at Cdaf=80%(R0max =0.60%) (Cdaf is carbon content (mass fraction) of sample in dry-ash-free basis, R0max is the maximum reflectance of vitrinite in coal); the characteristic temperatures and kinetic parameters of H2 exhibit a minimumvalue at Cdaf=80% (R0max =0.60%); the total yield of hydrogen had a maximum value at Cdaf=80% (R0max=0.60%) and this is consistent with the initial point of the first coalification jump. These aspects indicate that the derived parameters can reveal the first coalification jump. Combined with the structural characterization of the coals by FTIR, a mechanismthat explains the results was determined using the following three factors: (1) the evolution characteristics of aliphatic oxygen-containing functional groups; (2) the retrogressive reaction of soluble organic matter and (3) the "polarization" of organic matter.
- Hydrogen,
- Coal pyrolysis,
- Kinetics,
- Coalification jump,
- Retrogressive reaction,
- Polarization
1. [1]
  Heng Zhang . Determination of All Rate Constants in the Enzyme Catalyzed Reactions Based on Michaelis-Menten Mechanism. University Chemistry, 2024, 39(4): 395-400. doi: 10.3866/PKU.DXHX202310047
2. [2]
  Zhiwen HU , Ping LI , Yulong YANG , Weixia DONG , Qifu BAO . Morphology effects on the piezocatalytic performance of BaTiO₃. Chinese Journal of Inorganic Chemistry, 2025, 41(2): 339-348. doi: 10.11862/CJIC.20240172
3. [3]
  Mahmoud Sayed , Han Li , Chuanbiao Bie . Challenges and prospects of photocatalytic H₂O₂ production. Acta Physico-Chimica Sinica, 2025, 41(9): 100117-0. doi: 10.1016/j.actphy.2025.100117
4. [4]
  Yuchen Zhou , Huanmin Liu , Hongxing Li , Xinyu Song , Yonghua Tang , Peng Zhou . Designing thermodynamically stable noble metal single-atom photocatalysts for highly efficient non-oxidative conversion of ethanol into high-purity hydrogen and value-added acetaldehyde. Acta Physico-Chimica Sinica, 2025, 41(6): 100067-0. doi: 10.1016/j.actphy.2025.100067
5. [5]
  Yeyun Zhang , Ling Fan , Yanmei Wang , Zhenfeng Shang . Development and Application of Kinetic Reaction Flasks in Physical Chemistry Experimental Teaching. University Chemistry, 2024, 39(4): 100-106. doi: 10.3866/PKU.DXHX202308044
6. [6]
  Jiageng Li , Putrama . 数值积分耦合非线性最小二乘法一步确定反应动力学参数. University Chemistry, 2025, 40(6): 364-370. doi: 10.12461/PKU.DXHX202407098
7. [7]
  Xuzhen Wang , Xinkui Wang , Dongxu Tian , Wei Liu . Enhancing the Comprehensive Quality and Innovation Abilities of Graduate Students through a “Student-Centered, Dual Integration and Dual Drive” Teaching Model: A Case Study in the Course of Chemical Reaction Kinetics. University Chemistry, 2024, 39(6): 160-165. doi: 10.3866/PKU.DXHX202401074
8. [8]
  Dexin Tan , Limin Liang , Baoyi Lv , Huiwen Guan , Haicheng Chen , Yanli Wang . Exploring Reverse Teaching Practices in Physical Chemistry Experiment Courses: A Case Study on Chemical Reaction Kinetics. University Chemistry, 2024, 39(11): 79-86. doi: 10.12461/PKU.DXHX202403048
9. [9]
  Yiying Yang , Dongju Zhang . Elucidating the Concepts of Thermodynamic Control and Kinetic Control in Chemical Reactions through Theoretical Chemistry Calculations: A Computational Chemistry Experiment on the Diels-Alder Reaction. University Chemistry, 2024, 39(3): 327-335. doi: 10.3866/PKU.DXHX202309074
10. [10]
  Jing JIN , Zhuming GUO , Zhiyin XIAO , Xiujuan JIANG , Yi HE , Xiaoming LIU . Tuning the stability and cytotoxicity of fac-[Fe(CO)₃I₃]^- anion by its counter ions: From aminiums to inorganic cations. Chinese Journal of Inorganic Chemistry, 2024, 40(5): 991-1004. doi: 10.11862/CJIC.20230458
11. [11]
  Shule Liu . Application of SPC/E Water Model in Molecular Dynamics Teaching Experiments. University Chemistry, 2024, 39(4): 338-342. doi: 10.3866/PKU.DXHX202310029
12. [12]
  Yaling Chen . Basic Theory and Competitive Exam Analysis of Dynamic Isotope Effect. University Chemistry, 2024, 39(8): 403-410. doi: 10.3866/PKU.DXHX202311093
13. [13]
  Jiayu Gu , Siqi Wang , Jun Ling . Kinetics of Living Copolymerization: A Brief Discussion. University Chemistry, 2025, 40(4): 100-107. doi: 10.12461/PKU.DXHX202406012
14. [14]
  Yang Lv , Yingping Jia , Yanhua Li , Hexiang Zhong , Xinping Wang . Integrating the Ideological Elements with the “Chemical Reaction Heat” Teaching. University Chemistry, 2024, 39(11): 44-51. doi: 10.12461/PKU.DXHX202402059
15. [15]
  Tongtong Zhao , Yan Wang , Shiyue Qin , Liang Xu , Zhenhua Li . New Experiment Development: Upgrading and Regeneration of Discarded PET Plastic through Electrocatalysis. University Chemistry, 2024, 39(3): 308-315. doi: 10.3866/PKU.DXHX202309003
16. [16]
  Qin Hu , Liuyun Chen , Xinling Xie , Zuzeng Qin , Hongbing Ji , Tongming Su . Construction of Electron Bridge and Activation of MoS₂ Inert Basal Planes by Ni Doping for Enhancing Photocatalytic Hydrogen Evolution. Acta Physico-Chimica Sinica, 2024, 40(11): 2406024-0. doi: 10.3866/PKU.WHXB202406024
17. [17]
  Jinfu Ma , Hui Lu , Jiandong Wu , Zhongli Zou . Teaching Design of Electrochemical Principles Course Based on “Cognitive Laws”: Kinetics of Electron Transfer Steps. University Chemistry, 2024, 39(3): 174-177. doi: 10.3866/PKU.DXHX202309052
18. [18]
  Jiajie Cai , Chang Cheng , Bowen Liu , Jianjun Zhang , Chuanjia Jiang , Bei Cheng . CdS/DBTSO-BDTO S-scheme photocatalyst for H₂ production and its charge transfer dynamics. Acta Physico-Chimica Sinica, 2025, 41(8): 100084-0. doi: 10.1016/j.actphy.2025.100084
19. [19]
  Shanghua Li , Malin Li , Xiwen Chi , Xin Yin , Zhaodi Luo , Jihong Yu . High-Stable Aqueous Zinc Metal Anodes Enabled by an Oriented ZnQ Zeolite Protective Layer with Facile Ion Migration Kinetics. Acta Physico-Chimica Sinica, 2025, 41(1): 100003-0. doi: 10.3866/PKU.WHXB202309003
20. [20]
  Jichao XU , Ming HU , Xichang CHEN , Chunhui WANG , Leichen WANG , Lingyi ZHOU , Xing HE , Xiamin CHENG , Su JING . Construction and hydrogen peroxide-activated chemodynamic activity of ferrocene?benzoselenadiazole conjugate. Chinese Journal of Inorganic Chemistry, 2025, 41(8): 1495-1504. doi: 10.11862/CJIC.20250144

Get Citation

PDF

XML

Metrics

PDF Downloads(1146)
Abstract views(3601)
HTML views(16)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Address：Zhongguancun North First Street 2,100190 Beijing, PR China Tel: +86-010-82449177-888

DownLoad: Full-Size Img PowerPoint

Return