Degradative solvent extraction of subbituminous coal with deep eutectic solvent and effect of reaction conditions on products

作     者：Pedro Domingos Dauce Ryo Suzuki Ayano Nakamura Kenji Murakami 

作者机构：Department of Material ScienceGraduate School of Engineering ScienceAkita University1-1 Tegata Gakuen-tyoAkita-shiAkita 010-8502Japan 

出 版 物：《Carbon Resources Conversion》 (碳资源转化（英文）)

年 卷 期：2023年第6卷第1期

页      面：43-50页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：CHN analysis(LECO CHN628)for measuring mass fractions of Soluble and Residue was supported by Yukio Enda Junko Kutsuna in Akita Industrial Technology Center.Appendix A.Supplementary data 

主　　题：Low-rank coal Degradative solvent extraction Deep eutectic solvent Reaction temperature Upgrading 

摘      要：A degradative solvent extraction method for upgrading low-rank coal was performed at 200-350◦C for 90 min to obtain a substance dissolved in the solvent at room temperature(Soluble).Because the resulting mixture exhibited a high carbon content without ash,it could be readily used as a ***,deep eutectic solvents(DESs)have attracted attention for improving the Soluble yield and decreasing the oxygen content in *** is known to cleave oxygen-containing functional groups in biomass and is considered effective for deoxidizing low-rank ***,DES was prepared by mixing choline chloride,FeCl3⋅6H2O,and Adaro subbituminous coal(AD)and then added to 1-methylnaphthalene(1-MN)in a non-polar solvent,followed by degradative solvent extraction in the range of 200-350◦*** effects of reaction temperature and added DES amount on the product yield and the composition were *** the reaction temperature and amount of DES added increased,the Soluble yield and carbon content *** was also found that the thermal decomposition temperature and oxygen content decreased with the increasing DES *** decrease indicates that DES promotes the deoxygenation and decomposition of AD and increases the soluble yield of the fuel source.