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Surface Modification of Coal Powder by Using Different Coupling Agent
Corresponding Author(s) : Guojun Cheng
Asian Journal of Chemistry,
Vol. 26 No. 6 (2014): Vol 26 Issue 6
Abstract
To compare the superficial capacity of coal powder, the coupling agents such as g-methacryloxypropyl trimethoxy silane (KH-570), vinyltrimethoxysilane (SG-Si171) and di(dioctylpyrophosphato)ethylene titanate (NDZ-311) were used as modifiers to modify its surface activity. The structural changes and properties of the unmodified and modified coal powder were characterized by Fourier transform infrared spectroscopy, sedimentation stability experiment, thermogravimetric analysis (TGA) and contact angle measuring instrument. The results showed that the coupling agent bonds were tightly coated onto the surface of coal powder and formed an organic coating layer. Thermogravimetric analysis and contact angle measuring instrument indicated that coupling agent molecules were absorbed or anchored on the surface of coal powder particles, which favoured hindering the aggregation of coal powder particles.
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- L.P. Ding, Energy Fuels, 23, 5536 (2009); doi:10.1021/ef900589d.
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- F.S. Yang, J.L. Qu, Z.Y. Yang and A.N. Zhou, J. China Univ. Mining Technol., 17, 25 (2007); doi:10.1016/S1006-1266(07)60006-6.
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- J.Z. Liang, Composites Part A, 38, 1502 (2007); doi:10.1016/j.compositesa.2007.01.011.
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- X.H. Li, Z. Cao, Z.J. Zhang and H. Dang, Appl. Surf. Sci., 252, 7856 (2006); doi:10.1016/j.apsusc.2005.09.068.
- F.S. Daniel and P.G. Emmanuel, Chem. Mater., 22, 167 (2010); doi:10.1021/cm9026978.
- H.M. Xiao, X.Q. Ma and K. Liu, Energy Convers. Manage., 51, 1976 (2010); doi:10.1016/j.enconman.2010.02.030.
- W.W. Chen, S.W. Wu, Y.D. Lei, Z. Liao, B. Guo, X. Liang and D. Jia, Polymer (Guildf.), 52, 4387 (2011); doi:10.1016/j.polymer.2011.07.028.
References
L.P. Ding, Energy Fuels, 23, 5536 (2009); doi:10.1021/ef900589d.
Z.N. Liu, A.N. Zhou, G.R. Wang and X.G. Zhao, Chinese J. Chem. Eng., 17, 942 (2009); doi:10.1016/S1004-9541(08)60300-6.
F.S. Yang, J.L. Qu, Z. Yang and A. Zhou, J. China Univ. Mining Technol., 17, 25 (2007); doi:10.1016/S1006-1266(07)60006-6.
K.G. Prashanth, S. Scudino, M.S. Khoshkhoo, K.B. Surreddi, M. Stoica, G. Vaughan and J. Eckert, Mater. Des., 5, 1 (2011); doi:10.3390/ma5010001.
Z.W. Li and Y.F. Zhu, Appl. Surf. Sci., 211, 315 (2003); doi:10.1016/S0169-4332(03)00259-9.
F.S. Yang, J.L. Qu, Z.Y. Yang and A.N. Zhou, J. China Univ. Mining Technol., 17, 25 (2007); doi:10.1016/S1006-1266(07)60006-6.
H. Ding, S.C. Lu, Y.X. Deng and G.- Du, Nonferr. Met. Soc. China, 17, 1100 (2007); doi:10.1016/S1003-6326(07)60232-5.
C. Ocando, A. Tercjak and I. Mondragon, Eur. Polym. J., 47, 1240 (2011); doi:10.1016/j.eurpolymj.2011.03.008.
C. Li, J.H. Wan, H.H. Sun and L. Li, J. Hazard. Mater., 179, 515 (2010); doi:10.1016/j.jhazmat.2010.03.033.
Y.L. Tai, J.S. Qian, Y.C. Zhang and J. Huang, Chem. Eng. J., 141, 354 (2008); doi:10.1016/j.cej.2008.03.012.
J.Z. Liang, Composites Part A, 38, 1502 (2007); doi:10.1016/j.compositesa.2007.01.011.
W.W. Yang, J.B. Miao, R. Xia, J.S. Qian and Y.C. Zhang, J. Disper. Sci. Technol., 33, 1 (2012); doi:10.1080/01932691.2011.590119.
H.W. He, K.X. Li, J. Wang, G. Sun, Y. Li and J. Wang, Mater. Des., 32, 4521 (2011); doi:10.1016/j.matdes.2011.03.026.
X.H. Li, Z. Cao, Z.J. Zhang and H. Dang, Appl. Surf. Sci., 252, 7856 (2006); doi:10.1016/j.apsusc.2005.09.068.
F.S. Daniel and P.G. Emmanuel, Chem. Mater., 22, 167 (2010); doi:10.1021/cm9026978.
H.M. Xiao, X.Q. Ma and K. Liu, Energy Convers. Manage., 51, 1976 (2010); doi:10.1016/j.enconman.2010.02.030.
W.W. Chen, S.W. Wu, Y.D. Lei, Z. Liao, B. Guo, X. Liang and D. Jia, Polymer (Guildf.), 52, 4387 (2011); doi:10.1016/j.polymer.2011.07.028.