A. E. Permyakova, O. V. Russkikh, A. A. Ostroushko
{"title":"硝酸-聚乙烯醇和硝酸-聚乙烯吡啶酮体系中La0.9Me0.1MnO3±y粉体的溶液燃烧合成","authors":"A. E. Permyakova, O. V. Russkikh, A. A. Ostroushko","doi":"10.3103/S1061386224700389","DOIUrl":null,"url":null,"abstract":"<p>The processes occurring during the synthesis of lanthanum manganites doped with alkali metal ions in combustion reactions in the nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems were investigated. The maximum combustion temperatures of compositions depending on the organic fuel content φ (ratio to stoichiometric amount) were given. It was found that the maximum temperature of the process is 531°C, which is reached when synthesizing LaMnO<sub>3 ± <i>y</i></sub> sample from the composition with polyvinyl alcohol (φ = 4). It was experimentally shown that the maximum combustion temperature increases with increasing organic component amount in the composition and decreasing pyrolytic impurity gas (such as carbon monoxide CO, nitrogen oxides NO and NO<sub>2</sub>) concentrations. The processes of charge generation during combustion of nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems at different types of heating of the reactor were studied. The effect of synthesis conditions on the specific surface area of complex oxides was investigated.</p>","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"34 1","pages":"16 - 32"},"PeriodicalIF":0.5000,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Solution Combustion Synthesis of La0.9Me0.1MnO3 ± y Powders in Nitrate–Polyvinyl Alcohol and Nitrate–Polyvinylpyrrolidone Systems\",\"authors\":\"A. E. Permyakova, O. V. Russkikh, A. A. Ostroushko\",\"doi\":\"10.3103/S1061386224700389\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The processes occurring during the synthesis of lanthanum manganites doped with alkali metal ions in combustion reactions in the nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems were investigated. The maximum combustion temperatures of compositions depending on the organic fuel content φ (ratio to stoichiometric amount) were given. It was found that the maximum temperature of the process is 531°C, which is reached when synthesizing LaMnO<sub>3 ± <i>y</i></sub> sample from the composition with polyvinyl alcohol (φ = 4). It was experimentally shown that the maximum combustion temperature increases with increasing organic component amount in the composition and decreasing pyrolytic impurity gas (such as carbon monoxide CO, nitrogen oxides NO and NO<sub>2</sub>) concentrations. The processes of charge generation during combustion of nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems at different types of heating of the reactor were studied. The effect of synthesis conditions on the specific surface area of complex oxides was investigated.</p>\",\"PeriodicalId\":595,\"journal\":{\"name\":\"International Journal of Self-Propagating High-Temperature Synthesis\",\"volume\":\"34 1\",\"pages\":\"16 - 32\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2025-04-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Self-Propagating High-Temperature Synthesis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.3103/S1061386224700389\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Self-Propagating High-Temperature Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.3103/S1061386224700389","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Solution Combustion Synthesis of La0.9Me0.1MnO3 ± y Powders in Nitrate–Polyvinyl Alcohol and Nitrate–Polyvinylpyrrolidone Systems
The processes occurring during the synthesis of lanthanum manganites doped with alkali metal ions in combustion reactions in the nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems were investigated. The maximum combustion temperatures of compositions depending on the organic fuel content φ (ratio to stoichiometric amount) were given. It was found that the maximum temperature of the process is 531°C, which is reached when synthesizing LaMnO3 ± y sample from the composition with polyvinyl alcohol (φ = 4). It was experimentally shown that the maximum combustion temperature increases with increasing organic component amount in the composition and decreasing pyrolytic impurity gas (such as carbon monoxide CO, nitrogen oxides NO and NO2) concentrations. The processes of charge generation during combustion of nitrate–polyvinyl alcohol and nitrate–polyvinylpyrrolidone systems at different types of heating of the reactor were studied. The effect of synthesis conditions on the specific surface area of complex oxides was investigated.
期刊介绍：
International Journal of Self-Propagating High-Temperature Synthesis is an international journal covering a wide range of topics concerned with self-propagating high-temperature synthesis (SHS), the process for the production of advanced materials based on solid-state combustion utilizing internally generated chemical energy. Subjects range from the fundamentals of SHS processes, chemistry and technology of SHS products and advanced materials to problems concerned with related fields, such as the kinetics and thermodynamics of high-temperature chemical reactions, combustion theory, macroscopic kinetics of nonisothermic processes, etc. The journal is intended to provide a wide-ranging exchange of research results and a better understanding of developmental and innovative trends in SHS science and applications.
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