N. S. Burdelnaya, D. A. Bushnev, S. A. Ondar, D. V. Kuzmin, V. A. Beliy
{"title":"Composition of Coals from Republic of Tuva and Their Extracts Based on Pyrolysis and TGA Data","authors":"N. S. Burdelnaya, D. A. Bushnev, S. A. Ondar, D. V. Kuzmin, V. A. Beliy","doi":"10.3103/S0361521924010026","DOIUrl":null,"url":null,"abstract":"<p>Ashless extracts, hypercoals, were obtained from Tuvan coals of the Ulug-Khem basin by dissolving them in <i>N</i>-methylpyrrolidone. The yield of the extracts was 27.3–79.4%, and their ash content was 0.5–0.8%. The composition of the products of pyrolysis, carried out at 420°C, of the initial coals and the hypercoals obtained from them was studied. It was found that high volatile bituminous coal (coal from the Elegest deposit) can be extracted most effectively. The qualitative and quantitative compositions of pyrolysis products were not fundamentally different in the initial coals and the corresponding extracts. According to TGA data, the decomposition of extracts (hypercoals) occurred at lower temperatures relative to that of the original coals with a high yield of volatile components.</p>","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"58 1","pages":"40 - 45"},"PeriodicalIF":0.8000,"publicationDate":"2024-04-04","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/S0361521924010026","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}
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Abstract
Ashless extracts, hypercoals, were obtained from Tuvan coals of the Ulug-Khem basin by dissolving them in N-methylpyrrolidone. The yield of the extracts was 27.3–79.4%, and their ash content was 0.5–0.8%. The composition of the products of pyrolysis, carried out at 420°C, of the initial coals and the hypercoals obtained from them was studied. It was found that high volatile bituminous coal (coal from the Elegest deposit) can be extracted most effectively. The qualitative and quantitative compositions of pyrolysis products were not fundamentally different in the initial coals and the corresponding extracts. According to TGA data, the decomposition of extracts (hypercoals) occurred at lower temperatures relative to that of the original coals with a high yield of volatile components.
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.
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