Please wait a minute...
Chin. Phys. B, 2014, Vol. 23(10): 108201    DOI: 10.1088/1674-1056/23/10/108201
INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

K2S-activated carbons developed from coal and their methane adsorption behaviors

Feng Yan-Yan (冯艳艳), Yang Wen (杨文), Chu Wei (储伟)
Department of Chemical Engineering, Sichuan University, Chengdu 610065, China
Abstract  The main purpose of this work is to prepare various activated carbons by K2S activation of coal with size fractions of 60-80 meshes, and investigate the microporosity development and corresponding methane storage capacities. Raw coal is mixed with K2S powder, and then heated at 750℃-900℃ for 30 min-150 min in N2 atmosphere to produce the adsorbents. The texture and surface morphology are characterized by a N2 adsorption/desorption isotherm at 77 K and scanning electron microscopy (SEM). The chemical properties of carbons are confirmed by ultimate analysis. The crystal structure and degree of graphitization are tested by X-ray diffraction and Raman spectra. The relationship between sulfur content and the specific surface area of the adsorbents is also determined. K2S activation is helps to bring about better development of pore texture. These adsorbents are microporous materials with textural parameters increasing in a range of specific surface area 72.27 m2/g-657.7 m2/g and micropore volume 0.035 cm3/g-0.334 cm3/g. The ability of activated carbons to adsorb methane is measured at 298 K and at pressures up to 5.0 MPa by a volumetric method. The Langmuir model fits the experimental data well. It is concluded that the high specific surface area and micropore volume of activated carbons do determine methane adsorption capacity. The adsorbents obtained at 800℃ for 90 min with K2S/raw coal mass ratios of 1.0 and 1.2 show the highest methane adsorption capacities amounting to 106.98 mg/g and 106.17 mg/g, respectively.
Keywords:  coal      K2S activation      microporosity      methane adsorption  
Received:  12 February 2014      Revised:  17 April 2014      Accepted manuscript online: 
PACS:  82.80.Dx (Analytical methods involving electronic spectroscopy)  
  68.43.-h (Chemisorption/physisorption: adsorbates on surfaces)  
Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB201202).
Corresponding Authors:  Chu Wei     E-mail:  chuwei1965scu@163.com
About author:  82.80.Dx; 68.43.-h

Cite this article: 

Feng Yan-Yan (冯艳艳), Yang Wen (杨文), Chu Wei (储伟) K2S-activated carbons developed from coal and their methane adsorption behaviors 2014 Chin. Phys. B 23 108201

[1]Wu F C, Tseng R L and Juang R S 2005 Sep. Purif. Technol. 47 10
[2]Wajima T and Sugawara K 2011 Fuel Process. Technol. 92 1322
[3]Kierzek K, Frackowiak E, Lota G, Gryglewicz G and Machnikowski J 2004 Electrochim. Acta 49 515
[4]Rangel-Mendez J R and Cannon F S 2005 Carbon 43 467
[5]Yang W, Chu W, Jiang C F, Wen J and Sun W J 2011 Chin. J. Catal. 32 1323
[6]Feng Y Y, Chu W and Sun W J 2012 Journal of China Coal Society 37 1488
[7]Liu F S, Chu W, Sun W J, Xue Y and Jiang Q 2012 J. Nat. Gas Chem. 21 708
[8]He M C and Zhao J 2013 Chin. Phys. B 22 016802
[9]Ubago-Pérez R, Carrasco-Marín F, Fairén-Jiménez D and Moreno-Castilla C 2006 Micropor. Mesopor. Mat. 92 64.
[10]Raymundo-Piñero E, Azaïs P, Cacciaguerra T, Cazorla-Amorós D, Linares-Solano A and Béguin F 2005 Carbon 43 786
[11]Wajima T, Murakami K, Kato T and Sugawara K 2009 J. Environ. Sci. 21 1730
[12]Król M, Gryglewicz G and Machnikowski J 2011 Fuel Process. Technol. 92 158
[13]Raymundo-Piñero E, Kierzek K, Machnikowski J and Béguin F 2006 Carbon 44 2498
[14]Ji Y, Li T, Zhu L, Wang X and Lin Q 2007 Appl. Surf. Sci. 254 506
[15]Górka J, Zawislak A, Choma J and Jaroniec M 2008 Carbon 46 1159
[16]Díaz-Terán J, Nevskaia D M, Fierro J L G, López-Peinado A J and Jerez A 2003 Micropor. Mesopor. Mat. 60 173
[17]Bae J S, Bhatia S K, Rudolph V and Massarotto P 2009 Energ. Fuel 23 3319
[18]Feng Y Y, Jiang C F, Liu D J and Chu W 2013 J. Anal. Appl. Pyrol. 104 559
[19]Chen Y, Wang X and He R 2011 Fuel 90 499
[20]González D, Montes-Morán M A and Garcia A B 2003 Energ. Fuel 17 1324
[21]Feng Y Y, Jiang C F, Liu D J and Chu W 2014 Chin. Phys. B 23 028201
[22]Perrin A, Celzard A, Albiniak A, Kaczmarczyk J, Marêcché J F and Furdin G 2004 Carbon 42 2855
[23]Takagi H, Maruyama K, Yoshizawa N, Yamada Y and Sato Y 2004 Fuel 83 2427
[24]Luo J J, Liu Y F, Jiang C F, Chu W, Jie W and Xie H P 2011 J. Chem. Eng. Data 56 4919
[25]Feng Y Y, Yang W, Liu D J and Chu W 2013 Chin. J. Chem. 31 1102
[26]Hao S X, Wen J, Yu X P and Chu W 2013 Appl. Surf. Sci. 264 433
[27]Busch A, Gensterblum Y, Krooss B M and Siemons N 2006 Int. J. Coal Geol. 66 53
[28]Celorrio V, Calvillo L, Pérez-Rodríguez S, Lázaro M J and Moliner R 2011 Micropor. Mesopor. Mat. 142 55
[29]Wang X L, French J, Kandadai S and Chua H T 2010 J. Chem. Eng. Data 55 2700
[30]Lozano-Castello D, Alcaniz-Monge J, Casa-Lillo M A, Cazorla-Amoros D and Linares-Solano A 2002 Fuel 81 1777
[31]Lozano-Castello D, Cazorla-Amoros D, Linares-Solano A and Quinn D 2002 Carbon 40 989
[32]Himeno S, Komatsu T and Fujita S 2005 J. Chem. Eng. Data 50 369
[1] Numerical simulation on partial coalescence of a droplet with different impact velocities
Can Peng(彭灿), Xianghua Xu(徐向华), and Xingang Liang(梁新刚). Chin. Phys. B, 2021, 30(5): 054703.
[2] Modeling of microporosity formation and hydrogen concentration evolution during solidification of an Al-Si alloy
Qingyu Zhang(张庆宇), Dongke Sun(孙东科), Shunhu Zhang(章顺虎), Hui Wang(王辉), Mingfang Zhu(朱鸣芳). Chin. Phys. B, 2020, 29(7): 078104.
[3] Multi-bubble motion behavior of uniform magnetic field based on phase field model
Chang-Sheng Zhu(朱昶胜), Zhen Hu(胡震), Kai-Ming Wang(王凯明). Chin. Phys. B, 2020, 29(3): 034702.
[4] Hydrodynamic binary coalescence of droplets under air flow in a hydrophobic microchannel
Chao Wang(王超), Chao-qun Shen(沈超群), Su-chen Wu(吴苏晨), Xiang-dong Liu(刘向东), Fang-ping Tang(汤方平). Chin. Phys. B, 2019, 28(2): 024702.
[5] Wetting and coalescence of the liquid metal on the metal substrate
Zhen-Yang Zhao(赵珍阳), Tao Li(李涛), Yun-Rui Duan(段云瑞), Zhi-Chao Wang(王志超), Hui Li(李辉). Chin. Phys. B, 2017, 26(8): 083104.
[6] Coalbed methane adsorption and desorption characteristics related to coal particle size
Yan-Yan Feng(冯艳艳), Wen Yang (杨文), Wei Chu(储伟). Chin. Phys. B, 2016, 25(6): 068102.
[7] Microstructure and its influence on CH4 adsorption behavior of deep coal
Feng Yan-Yan (冯艳艳), Jiang Cheng-Fa (江成发), Liu Dai-Jun (刘代俊), Chu Wei (储伟). Chin. Phys. B, 2014, 23(2): 028201.
[8] A comparison of coal supply-demand in China and in the US based on a network model
Fang Cui-Cui (房翠翠), Sun Mei (孙梅), Zhang Pei-Pei (张培培), Gao An-Na (高安娜). Chin. Phys. B, 2013, 22(10): 108901.
[9] Revision of single atom local density and capture number varying with coverage in uniform depletion approximation and its effect on coalescence and number of stable clusters
Shao Qing-Yi(邵庆益) and Zhang Juan (张娟) . Chin. Phys. B, 2011, 20(8): 086803.
[10] Coalescence of heteroclusters Au767 and Ag767: a molecular-dynamics study
Li Guo-Jian(李国建), Wang Qiang(王强), Li Hu-Tian(李虎田), Wang Kai(王凯), and He Ji-Cheng(赫冀成). Chin. Phys. B, 2008, 17(9): 3343-3349.
No Suggested Reading articles found!