期刊
CHEMICAL ENGINEERING JOURNAL
卷 316, 期 -, 页码 171-178出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2017.01.093
关键词
Heteropoly compound; Ionic liquid; H2S; Solution; Oxidation
资金
- National Natural Science Foundation of China [21276144, 21511130021]
- Scientific Key Project from Chinese Ministry of Education [109094]
- Ph. D. Program Project for Priority Development Field from Chinese Ministry of Education [20110131130001]
In this work, a series of substituted heteropoly compounds (HPCs) were synthesized and dissolved into ionic liquid 1-N-butyl-3-methylimidazolium chloride (BmimCl) to be used for H2S removal at 200 degrees C. The absorbent and desulfurization product were characterized by elemental analysis, Fourier transform infrared (FT-IR) spectra, Thermogravimetry analysis (TGA), Differential Scanning Calorimetry (DSC) and X-ray photoelectron spectroscopy (XPS). The absorption results showed that the desulfurization ability of Mo-V doped HPC is far better than that of W-Mo doped HPC, which demonstrated that Mo and V in HPC are more suitable for H2S removal compared with W atom. Besides, [Bmim]PMo10V2O40/BmimCI solution showed the best desulfurization performance. The regeneration experiment showed that all HPC/IL solution can be recycled easily. The desulfurization mechanism could be expressed as: H2S + O-2 ->(HPC/IL) H2O + S. Never was found before in liquid phase, the oxygen in HPC could be replaced by S2-, which tremendously improved the sulfur capacity. (C) 2017 Elsevier B.V. All rights reserved.
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