Citation: LI Mei, SUN Gong-cheng, CHENG Xue-yun, LI Jia-jia, JIN Quan, XU Rong-sheng. Experimental study on desulfurization by ionic liquids/H₂O₂ system[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(9): 1042-1052. shu

Experimental study on desulfurization by ionic liquids/H₂O₂ system

LI Mei ^1,2,3,, ,
SUN Gong-cheng ¹ ,
CHENG Xue-yun ¹ ,
LI Jia-jia ¹ ,
JIN Quan ¹ ,
XU Rong-sheng ¹

1.
School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan 750021, China
2.
Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan 750021, China
3.
Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan 750021, China

Corresponding author: LI Mei, echolimei@126.com
Received Date: 20 May 2019
Revised Date: 8 July 2019

Fund Project: The project was supported by the National Natural Science Foundation of China (21666001), North Minzu University-Level Scientific Research Project (2017HG04), North Minzu University-Level Major Project (ZDZX201803) and North Minzu University Research Platform Project (201707)the National Natural Science Foundation of China 21666001North Minzu University Research Platform Project 201707North Minzu University-Level Scientific Research Project 2017HG04North Minzu University-Level Major Project ZDZX201803

Figures(9)

Four different kinds of ionic liquids(ILs), namely, 1-butyl-3-methylimidazolium bromide([Bmim]Br), 1-butyl-3-methylimidazolium tetrafluoroborate([Bmim]BF₄), 1-butyl-3-methylimidazolium hydro-sulfate([Bmim]HSO₄), and 1-butyl-3-methylimidazolium dihydrophosphate([Bmim]H₂PO₄) were selected to add to the H₂O₂ solution (30%), respectively, to obtain four mixed solutions. Then, two kinds of deashed high-sulfur coal (LS, QX) desulfurization experiments were tested with above mixed solutions under mild conditions, respectively. The contents of different sulfur forms in coal samples before and after desulfurization were determined by wet chemical method, and the coal samples before and after desulfurization were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and thermogravimetric (TG). The results show that the addition of ionic liquids can make the H₂O₂ oxidation desulfurization ability enhance, and pyrite sulfur and organic sulfide sulfur in coal are obviously removed. After treated by the ILs/H₂O₂ system, the small size particle decreases, the space among the particles increases, and the pits on the coal surface become obvious. Moreover, the thermogravimetric test results show that the total weight loss of the coal sample treated by the ILs/H₂O₂ system increases and the peak temperature of some volatile substances lowers.
- ionic liquids,
- desulfurization,
- sulfur forms,
- pyrolysis characteristics
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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

Experimental study on desulfurization by ionic liquids/H2O2 system

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通讯作者: 陈斌, bchen63@163.com

Experimental study on desulfurization by ionic liquids/H₂O₂ system