化学
氯化胆碱
喹啉
咔唑
产量(工程)
溶剂
煤焦油
氯化物
深共晶溶剂
丙二酸
氮气
有机化学
范德瓦尔斯力
色谱法
共晶体系
煤
分子
材料科学
冶金
合金
作者
Weiwei Yan,Zhi‐Min Zong,Zhixin Li,Jun Li,Guanghui Liu,Zhi-Hao Ma,Yangyang Zhang,Mei‐Ling Xu,Fang-Jing Liu,Xian‐Yong Wei
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2020-06-02
卷期号:8 (25): 9464-9471
被引量:21
标识
DOI:10.1021/acssuschemeng.0c02369
摘要
An effective deep eutectic solvent (DES) combined with column chromatography was designed for separating nitrogen-containing aromatics (NCAs) from the light portion (LP, which is petroleum ether-extractable portion) of a high-temperature coal tar. The total content of NCAs enriched with equimolar choline chloride (CC)/malonic acid mixture is much higher than that with other CC-based DESs. The maximum total recovery of NCAs is 57.2% with 1:2 of DES/LP mass ratio from the third run of extracting LP at 35 °C. The relative contents of carbazole, benzo[h]quinoline, and quinoline enriched by flash preparative chromatography are 93.3, 92.0, and 90.4%, respectively. In addition, the nonbonded interaction energy among the DESs, NCAs, and condensed arenes was calculated for demonstrating the difference in extract yield with diverse DESs. The reduced density gradient method proved that the typical hydrogen bonds, X–H···π bonds (X denotes >C, >N, or −O), and van der Waals forces widely exist among the DESs and NCAs through molecular dynamics simulations.
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