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首页> 外文期刊>Green chemistry >Insight into effective denitrification and desulfurization of liquid fuel with deep eutectic solvents: an innovative evaluation criterion to filtrate extractants using the compatibility index
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Insight into effective denitrification and desulfurization of liquid fuel with deep eutectic solvents: an innovative evaluation criterion to filtrate extractants using the compatibility index

机译：深度共晶溶剂的液体燃料的有效脱氮和脱硫的洞察：使用相容指数筛选萃取剂的创新评估标准

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摘要

Tremendous attention has been paid to removal of N-/S-containing compounds from liquid fuel due to the necessity of reducing NOx and SOx emissions. In this work, the compatibility index (CI or PCI) was developed as a new criterion to evaluate the removal efficiency (R-e) of quinoline, carbazole and dibenzothiophene (DBT) in deep eutectic solvents (DESs). For alkaline quinoline, acid-base extraction was pronounced, and ChCl/mandelic acid was the optimal extractant to achieve a removal efficiency of 99.2 wt% (CI = 0.37). For near-neutral carbazole and DBT, polarity compatible extraction was the predominant mechanism. The highest R-e value of 94.9 wt% for carbazole removal was obtained in the ChCl/mandelic acid extractant (PCI = -0.044). DBT was difficult to remove directly because of its low molecular polarity. After adding H2O2, the desulfurization efficiency was found to increase to 99.1 wt% in the ChCl/p-toluenesulfonic acid extractant (PCI = 0.014). Furthermore, experiments with real diesel confirmed that the highest desulfurization and denitrification efficiency was 67.7 wt% and 63.7 wt%, respectively, in ChCl/p-toluenesulfonic acid. The compatibility index developed in this study has the potential to simplify the filtration operation of extractants and to intensify the removal efficiency of N-/S-containing compounds in the category of green extraction.
机译：由于还原NOx和SOX排放，已经支付了从液体燃料中除去N- / S的含化合物的巨大关注。在这项工作中，兼容性指数（CI或PCI）被开发为评估喹啉，咔唑和二苯并噻吩（DBT）在深过共晶溶剂（DESS）中的去除效率（R-E）的新标准。对于碱性喹啉，酸碱萃取显着，并且CHCl / meandelic酸是最佳萃取剂，以实现99.2wt％的去除效率（Ci = 0.37）。对于近中性咔唑和DBT，极性相容的提取是主要的机制。在CHCl / meandelic酸提取物（PCI = -0.044）中获得咔唑去除的最高R-E值为94.9wt％。由于其低分子极性，DBT难以直接去除。加入H 2 O 2后，发现脱硫效率在CHCl /对甲苯磺酸萃取剂中增加至99.1wt％（PCI = 0.014）。此外，具有实柴油的实验证实，在CHCl /对甲苯磺酸中分别为最高脱硫和脱氮效率为67.7wt％和63.7wt％。本研究开发的相容性指数具有简化萃取剂的过滤操作，并加强在绿色提取类别中的含N- / S化合物的去除效率。

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