Selective Extraction of Neutral Nitrogen-Containing Compounds from Straight-Run Diesel Feed Using Polymer-Supported Ionic Liquid Moieties
Selective Extraction of Neutral Nitrogen-Containing Compounds from Straight-Run Diesel Feed Using Polymer-Supported Ionic Liquid Moieties
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DOI：
10.1021/ie900142p
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发表时间：
2009-03
影响因子：
4.2
通讯作者：
L. Xie;A. Favre-Réguillon;Xuxu Wang;Xianzhi Fu;M. Vrinat;M. Lemaire
中科院分区：
文献类型：
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作者：
L. Xie;A. Favre-Réguillon;Xuxu Wang;Xianzhi Fu;M. Vrinat;M. Lemaire
微量极性化合物，其中中性含氮化合物（n-化合物）的提取因其对加氢脱硫（HDS）过程的抑制作用而受到炼油厂的广泛关注。最近，我们已经证明氯基离子液体（ILs）可以选择性地从直馏柴油进料中提取n化合物。然而，在碳氢燃料中可测量的溶解度并不是该工艺的理想结果。因此，研究了聚合物上ILs部分的共价结合。以梅里菲尔德树脂为原料，以咪唑、吡啶和三乙基氯化铵为官能团制备了三种树脂。以二苯并噻吩和咔唑为模型化合物的合成溶液对树脂进行了评价，发现树脂对n -化合物有很高的选择性。然后用含13400 ppm S和105 ppm n的直馏柴油原料进一步评价咪唑和吡啶树脂对n化合物的选择性。
The extraction of trace polar compounds, among them neutral nitrogen-containing compounds (N-compounds), has received much attention from refiners because of their inhibiting effect on the hydrodesulfurization (HDS) process. Recently, we have shown that chloride-based ionic liquids (ILs) can selectively extract N-compounds from straight-run diesel feeds. However, the measurable solubility of ILs in hydrocarbon fuel is not a desired outcome of the process. Thus, the covalent binding of ILs moieties on polymers was studied. Starting from Merrifield resin, three resins were prepared with imidazolium, pyridinium, and triethylammonium chloride functionality. The resins were evaluated using a synthetic solution with dibenzothiophene and carbazole as model compounds, and a high selectivity for N-compounds was found. Imidazolium and pyridinium resins were then further evaluated using straight-run diesel feed containing 13400 ppm S and 105 ppm N. The selectivity toward N-compounds was comparable to the selectivity...