{"title":"不同链长的咪唑离子液体对神华长焰煤结块特性的影响","authors":"Kangshun Han, Yuan Fang, Ying Chen, Shuling Wang, Xiangchun Liu, Ping Cui","doi":"10.3103/S1068364X23701235","DOIUrl":null,"url":null,"abstract":"<p>To upgrading the caking property of Shenhua long-flame coal (SH), imidazole ionic liquids (IILs) were used. SH and the treated samples were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy to reveal the upgrading mechanism. The results showed that IILs treatment could improve the caking property of SH. When exploring the effects of IILs with different chain lengths on the caking property of SH, it was found that the caking index of the treated samples first increased and then decreased with increasing chain length, and [C<sub>5</sub>MIM]Cl treatment exhibited the best modification effect among all IILs used. Additionally, an upgrading mechanism of caking property of SH using IILs is proposed. IILs treatment could increase the content of small aromatics with 3–5 rings and decreased the length of side chain alkanes and oxygen content, which could increase the caking property of SH.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"66 10","pages":"544 - 553"},"PeriodicalIF":0.4000,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of Imidazole Ionic Liquids with Different Chain Lengths on Caking Property of Shenhua Long-Flame Coal\",\"authors\":\"Kangshun Han, Yuan Fang, Ying Chen, Shuling Wang, Xiangchun Liu, Ping Cui\",\"doi\":\"10.3103/S1068364X23701235\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>To upgrading the caking property of Shenhua long-flame coal (SH), imidazole ionic liquids (IILs) were used. SH and the treated samples were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy to reveal the upgrading mechanism. The results showed that IILs treatment could improve the caking property of SH. When exploring the effects of IILs with different chain lengths on the caking property of SH, it was found that the caking index of the treated samples first increased and then decreased with increasing chain length, and [C<sub>5</sub>MIM]Cl treatment exhibited the best modification effect among all IILs used. Additionally, an upgrading mechanism of caking property of SH using IILs is proposed. IILs treatment could increase the content of small aromatics with 3–5 rings and decreased the length of side chain alkanes and oxygen content, which could increase the caking property of SH.</p>\",\"PeriodicalId\":519,\"journal\":{\"name\":\"Coke and Chemistry\",\"volume\":\"66 10\",\"pages\":\"544 - 553\"},\"PeriodicalIF\":0.4000,\"publicationDate\":\"2024-02-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Coke and Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1068364X23701235\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Coke and Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1068364X23701235","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
摘要
摘要 为了提高神华长焰煤（SH）的结块性能，使用了咪唑离子液体（IILs）。采用傅立叶变换红外光谱（FT-IR）、X射线衍射（XRD）、X射线光电子能谱（XPS）和拉曼光谱对神华长焰煤及处理后的样品进行了表征，揭示了结块性能的提升机理。结果表明，IILs 处理可改善 SH 的结块性能。在探讨不同链长的 IILs 对 SH 结块性能的影响时发现，随着链长的增加，处理样品的结块指数先增加后降低，在所有 IILs 中，[C5MIM]Cl 处理的改性效果最好。此外，还提出了使用 IILs 提高 SH 结块性能的机理。IILs 处理可增加 3-5 环的小芳烃含量，减少侧链烷烃的长度和氧含量，从而提高 SH 的结块性能。
Effects of Imidazole Ionic Liquids with Different Chain Lengths on Caking Property of Shenhua Long-Flame Coal
To upgrading the caking property of Shenhua long-flame coal (SH), imidazole ionic liquids (IILs) were used. SH and the treated samples were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy to reveal the upgrading mechanism. The results showed that IILs treatment could improve the caking property of SH. When exploring the effects of IILs with different chain lengths on the caking property of SH, it was found that the caking index of the treated samples first increased and then decreased with increasing chain length, and [C5MIM]Cl treatment exhibited the best modification effect among all IILs used. Additionally, an upgrading mechanism of caking property of SH using IILs is proposed. IILs treatment could increase the content of small aromatics with 3–5 rings and decreased the length of side chain alkanes and oxygen content, which could increase the caking property of SH.
期刊介绍：
The journal publishes scientific developments and applications in the field of coal beneficiation and preparation for coking, coking processes, design of coking ovens and equipment, by-product recovery, automation of technological processes, ecology and economics. It also presents indispensable information on the scientific events devoted to thermal rectification, use of smokeless coal as an energy source, and manufacture of different liquid and solid chemical products.
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