{"title":"醋酸钙存在下沥青裂解过程中沥青质分子结构的变化","authors":"A. V. Goncharov, E. B. Krivtsov","doi":"10.3103/S0361521925700089","DOIUrl":null,"url":null,"abstract":"<p>The article presents the results of a study of asphaltenes isolated from the liquid products of initiated cracking of two tar samples at 500°C in the presence of a calcium acetate additive. Characteristic changes in the composition of cracking products depending on the amount of the additive were shown. It was established that the formation of solid condensation products depended not only on the initial concentration of asphaltenes but also on their structure. Changes in the structural-group parameters of asphaltenes in the course of the initiated cracking of tars were studied. A distinctive feature of tar cracking in the presence of calcium acetate was that the additive promoted both the destruction of structural blocks and a significant decrease in their number in the composition of asphaltene molecules. In addition, the averaged asphaltene molecules became more compact due to the destruction of aliphatic substituents and naphthenic rings, and the fraction of condensed aromatic structures in their composition increased significantly.</p>","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 3","pages":"220 - 226"},"PeriodicalIF":0.9000,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Changes in the Molecular Structure of Asphaltenes in the Process of Tar Cracking in the Presence of Calcium Acetate\",\"authors\":\"A. V. Goncharov, E. B. Krivtsov\",\"doi\":\"10.3103/S0361521925700089\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The article presents the results of a study of asphaltenes isolated from the liquid products of initiated cracking of two tar samples at 500°C in the presence of a calcium acetate additive. Characteristic changes in the composition of cracking products depending on the amount of the additive were shown. It was established that the formation of solid condensation products depended not only on the initial concentration of asphaltenes but also on their structure. Changes in the structural-group parameters of asphaltenes in the course of the initiated cracking of tars were studied. A distinctive feature of tar cracking in the presence of calcium acetate was that the additive promoted both the destruction of structural blocks and a significant decrease in their number in the composition of asphaltene molecules. In addition, the averaged asphaltene molecules became more compact due to the destruction of aliphatic substituents and naphthenic rings, and the fraction of condensed aromatic structures in their composition increased significantly.</p>\",\"PeriodicalId\":779,\"journal\":{\"name\":\"Solid Fuel Chemistry\",\"volume\":\"59 3\",\"pages\":\"220 - 226\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-06-14\",\"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/S0361521925700089\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solid Fuel Chemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.3103/S0361521925700089","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}
Changes in the Molecular Structure of Asphaltenes in the Process of Tar Cracking in the Presence of Calcium Acetate
The article presents the results of a study of asphaltenes isolated from the liquid products of initiated cracking of two tar samples at 500°C in the presence of a calcium acetate additive. Characteristic changes in the composition of cracking products depending on the amount of the additive were shown. It was established that the formation of solid condensation products depended not only on the initial concentration of asphaltenes but also on their structure. Changes in the structural-group parameters of asphaltenes in the course of the initiated cracking of tars were studied. A distinctive feature of tar cracking in the presence of calcium acetate was that the additive promoted both the destruction of structural blocks and a significant decrease in their number in the composition of asphaltene molecules. In addition, the averaged asphaltene molecules became more compact due to the destruction of aliphatic substituents and naphthenic rings, and the fraction of condensed aromatic structures in their composition increased significantly.
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
