Citation: WEI Ling, WU Ying-quan, ZHAO Jian-tao, TAN Yi-sheng. Role of coal surface functional groups in methane cracking over different chars[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(6): 661-667. shu

Role of coal surface functional groups in methane cracking over different chars

WEI Ling ^1,2,3 ,
WU Ying-quan ¹ ,
ZHAO Jian-tao ¹ ,
TAN Yi-sheng ^1,*,,

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Taiyuan University, Department of Environmental Engineering, Taiyuan 030032, China

Corresponding author: TAN Yi-sheng, tan@sxicc.ac.cn
Received Date: 15 December 2015
Revised Date: 21 January 2016

Figures(7)

Methane cracking was studied over a set of Xiaolongtan lignite chars in a fixed bed reactor at 1123K and atmospheric pressure with a mixture of CH₄/N₂ (1:4). The chars were obtained by pyrolysis of raw Xiaolongtan coal in nitrogen at 1173K for 30min in a fixed bed reactor. The main functional groups in coal char were hydroxyl group, carbonyl group and ether bond and so on, which can be protected by dipping the char into solutions of barium hydroxide, phenyl hydrazine and hydrogen iodide, respectively. The catalytic activity of coal chars treated by barium hydroxide was lower than the raw chars, while that of the chars treated by phenyl hydrazine or hydrogen iodide were higher. Hydroxy in the coal char was expended by Ba (OH)₂. The initial methane conversion was achieved at about 90.5% for the Ba (OH)₂ -treated char with equivalent-volume impregnation. The corresponding hydrogen yield was at about 65.2%. The carbonyl group of the coal char was reduced by phenyl hydrazine, with the methane conversion and hydrogen yield about 55.4% and 42.9%, respectively. The methane conversion and hydrogen yield decreased, while the ether bond turned into hydroxy. It was speculated that hydroxyl group in coal char restrain the methane cracking, while carbonyl group and ether bond accelerate it. The methane conversion and hydrogen yield on the different coal chars decreased with increasing reaction duration. The char became deactivated at 123min following its exposure to methane. The main reason was that the carbon from methane cracking was deposited on the char, which is supported by scanning electron microscopy analysis.
- lignite char,
- hydrogen,
- methane cracking,
- function group,
- catalysis
1. [1]
  XU Shan, WANG Xiao-lai, ZHAO Rui. Study on the production of hydrogen from methane[J]. Prog Chem, 2003,15(2):141-150.
2. [2]
  BAI Zong-qing, CHEN Hao-kan, LI Wen, LI Bao-qing. Hydrogen production from methane pyrolytic decomposition over activated carbons[J]. J Fuel Chem Technol, 2006,34(1):66-70.
3. [3]
  BAI Zong-qing, CHEN Hao-kan, LI Wen, LI Bao-qing. Hydrogen production by methane decomposition over activated carbon in a fluidized-bed reactor[J]. Nat Gas Chem Ind, 2006,31(1):1-4.
4. [4]
  STEINBERG M. The Hy-C process (thermal decomposition of natural gas) potentially the lowest cost source of hydrogen with the least CO₂ emission[J]. Energy Convers Manage, 1995,36(6/9):791-796.
5. [5]
  POIRIER M G, SAPUNDZHIEV C. Catalytic decomposition of natural gas to hydrogen for fuel cell applications[J]. Int J Hydrogen Energy, 1997,22(4):429-433. doi: 10.1016/S0360-3199(96)00101-2
6. [6]
  CHOUDHARY T V, SIVADINARAYANA C, CHUSUEI C C, KLINGHOFFER A, GOODMAN D W. Hydrogen production via catalytic decomposition of methane[J]. J Catal, 2001,199(1):9-18. doi: 10.1006/jcat.2000.3142
7. [7]
  PAN Zhi-yong, SHEN Shi-kong. Hydrogen production via direct cracking of methane over Ni/SiO₂ catalysts[J]. J Fuel Chem Technol, 2003,31(5):466-470.
8. [8]
  SERBAN M, LEWIS M A, MARSHALL C L, DOCTOR R D. Hydrogen production by direct contact pyrolysis of natural gas[J]. Energy Fuels, 2003,17(3):705-713. doi: 10.1021/ef020271q
9. [9]
  CHEN J L, LI Y D, LI Z Q, ZHANG X X. Production of CO_x-free hydrogen and nanocarbon by direct decomposition of undiluted methane on Ni-Cu-alumina catalysts[J]. App Catal A:Gen, 2004,269(1/2):179-186.
10. [10]
  BAI Zong-qing, CHEN Hao-kan, LI Wen, LI Bao-qing. Study on the thermal performance of metallurgical coke under methane by TG-MS[J]. J Fuel Chem Technol, 2005,33(4):426-430.
11. [11]
  MURADOV N. CO₂-free production of hydrogen by catalytic pyrolysis of hydrocarbon fuel[J]. Energy Fuels, 1998,12(1):41-48. doi: 10.1021/ef9701145
12. [12]
  MURADOV N. Hydrocarbon-based systems for CO₂-free production of hydrogen//Proceeding of 13th World Hydrogen Energy Conference[J]. Beijing, 2000:428-433.
13. [13]
  MURADOV N. Catalysis of methane decomposition over elemental carbon[J]. Catal Commun, 2001,2(3/4):89-94.
14. [14]
  MURADOV N. Hydrogen via methane decomposition:An application for decarbonization of fossil fuels[J]. Int J Hydrogen Energy, 2001,26(11):1165-1175. doi: 10.1016/S0360-3199(01)00073-8
15. [15]
  MURADOV N, VEZIROGLU T N. From hydrogen to hydrogen-carbon to hydrogen economy[J]. Int J Hydrogen Energy, 2005,30(3):225-237. doi: 10.1016/j.ijhydene.2004.03.033
16. [16]
  BAI Z Q, CHEN H K, LI W, LI B Q. Hydrogen production by methane decomposition over coal char[J]. Int J Hydrogen Energy, 2006,31(7):899-905. doi: 10.1016/j.ijhydene.2005.08.001
17. [17]
  SUN Z Q, WU J H, HAGHIGHI M, BROMLY J, NG E, WEE H L, WANG Y, ZHANG D K. Methane cracking over a bituminous coal char[J]. Energy Fuels, 2007,21(3):1601-1605. doi: 10.1021/ef060616v
18. [18]
  ZHANG Y, WU J H, ZHANG D K. Cracking of simulated oil refinery off-gas over a coal char, petroleum coke, and quartz[J]. Energy Fuels, 2008,22(2):1142-1147. doi: 10.1021/ef700680d
19. [19]
  XU Ze-xi, WU Jin-hu, WANG Yang, ZHANG Dong-ke. Methane craking over lignite char[J]. J Fuel Chem Technol, 2009,37(3):277-281.
20. [20]
  WEI L, TAN Y S, HAN Y Z, ZHAO J T, WU J H, ZHANG D K. Hydrogen production by methane cracking over different coal chars[J]. Fuel, 2011,90(11):3473-3479. doi: 10.1016/j.fuel.2011.06.053
21. [21]
  WEI Ling, TAN Yi-sheng, HAN Yi-zhuo, ZHAO Jian-tao. Influence of coal char on methane cracking[J]. CIESC J, 2015,66(9):3733-3738.
22. [22]
  ZHU Zhi-pei, GAO Jin-sheng. Coal Chemistry[M]. Shanghai:Shanghai Scientific & Technical Publishers, 1984, 122-129.)
23. [23]
  LI Qing-zhao, LIN Bai-quan, ZHAO Chang-sui, WU Wei-fang. Chemical structure analysis of coal char surface based on Fourier-Transform infrared spectrometer[J]. Proc CSEE, 2011,31(32):46-52.
24. [24]
  FIGUEIREDO J L, PEREIRA M F R, FREITAS M M A, ORFAO J J M. Modification of the surface chemistry of activated carbons[J]. Carbon, 1999,37:1379-1389. doi: 10.1016/S0008-6223(98)00333-9
25. [25]
  MENG Hua-ping. The catalytic effect of oxygen-containing group in coal char surface on methane decomposition reaction. Taiyuan:Taiyuan University of Technology, 2008.)
26. [26]
  SHAN Xiao-mei, ZHU Shu-quan, ZHANG Wen-hui, LI Shu-rong, LI Shu-qin. Modification surface properties of coal based and coconut shell activated carbons by oxidation[J]. J China Univ Min Technol, 2003,32(6):729-733.
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