S. I. Zherebtsov, K. M. Shpakodraev, K. S. Votolin, N. V. Malyshenko
{"title":"Isolation of Fulvic Acids by Extraction with n-Butanol","authors":"S. I. Zherebtsov, K. M. Shpakodraev, K. S. Votolin, N. V. Malyshenko","doi":"10.3103/S0361521925700181","DOIUrl":null,"url":null,"abstract":"<p>The article considers the methods of fulvic acid (FA) extraction from brown coals by the Tyurin–Forsyth method and by liquid-phase extraction with <i>n</i>-butyl alcohol. The data of technical and elemental analysis and IR and <sup>13</sup>C NMR spectroscopy of the obtained fulvic acid samples and their fractions are presented. A comparative characterization of the obtained fulvic acids is carried out. It was established that the fulvic acid fractions obtained by the Tyurin–Forsyth method had a higher aromaticity index ( <i>f</i><sub>ar</sub> = 32.79–61.54%) than the fulvic acids obtained by liquid-phase extraction with <i>n</i>-butyl alcohol ( <i>f</i><sub>ar</sub> = 20.64%). Conclusions were made on the possibility and efficiency of using the liquid-phase extraction method with <i>n</i>-butyl alcohol for extracting brown coal fulvic acids.</p>","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 4","pages":"290 - 296"},"PeriodicalIF":0.9000,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid Fuel Chemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.3103/S0361521925700181","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The article considers the methods of fulvic acid (FA) extraction from brown coals by the Tyurin–Forsyth method and by liquid-phase extraction with n-butyl alcohol. The data of technical and elemental analysis and IR and 13C NMR spectroscopy of the obtained fulvic acid samples and their fractions are presented. A comparative characterization of the obtained fulvic acids is carried out. It was established that the fulvic acid fractions obtained by the Tyurin–Forsyth method had a higher aromaticity index ( far = 32.79–61.54%) than the fulvic acids obtained by liquid-phase extraction with n-butyl alcohol ( far = 20.64%). Conclusions were made on the possibility and efficiency of using the liquid-phase extraction method with n-butyl alcohol for extracting brown coal fulvic acids.
期刊介绍：
The journal publishes theoretical and applied articles on the chemistry and physics of solid fuels and carbonaceous materials. It addresses the composition, structure, and properties of solid fuels. The aim of the published articles is to demonstrate how novel discoveries, developments, and theories may be used in improved analysis and design of new types of fuels, chemicals, and by-products. The journal is particularly concerned with technological aspects of various chemical conversion processes and includes papers related to geochemistry, petrology and systematization of fossil fuels, their beneficiation and preparation for processing, the processes themselves, and the ultimate recovery of the liquid or gaseous end products.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
