Desulfurization and regeneration performance of heteropoly compound/ionic liquid solutions at high temperature
Desulfurization and regeneration performance of heteropoly compound/ionic liquid solutions at high temperature
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杂多化合物/离子液体溶液的高温脱硫及再生性能
DOI：
10.1016/j.cej.2017.01.093
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发表时间：
2017-05-15
影响因子：
15.1
通讯作者：
Wang, Rui
中科院分区：
文献类型：
--
作者：
Liu, Xinpeng;Li, Junpeng;Wang, Rui
合成了一系列取代杂多化合物（HPC），并将其溶解于离子液体氯化1-N-丁基-3-甲基咪唑（BmimCl）中，用于200 ℃下的H2S脱除。采用元素分析、红外光谱（FT-IR）、热重分析（TGA）、差示扫描量热分析（DSC）和X射线光电子能谱（XPS）对脱硫剂和脱硫产物进行了表征。结果表明，Mo-V掺杂HPC的脱硫性能远优于W-Mo掺杂HPC，说明HPC中Mo和V比W更适合脱除H2S。此外，[Bmim] PMo_（10）V_2 O_（40）/BmimCl溶液的脱硫效果最好。再生实验表明，HPC/IL溶液均可循环使用。脱硫机理为：H2S + O-2 ->（HPC/IL）H2O + S。在液相中，硫离子可以取代HPC中的氧，大大提高了HPC的硫容。(C)2017爱思唯尔B. V.保留所有权利。
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.