V. A. Borisov, K. N. Iost, V. Temerev, Y. Surovikin, A. Smorokov, P. A. Fedotova, D. A. Shlyapin
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According to TGA, the temperatures corresponding to the onset of oxidation, 50% oxidation and the end of oxidation of Sibunit calcined at 2200 °C are synchronously shifted by 100 °C with respect to the initial Sibunit.The effect of high-temperature (1400-2200°C) treatment of the carbon material Sibunit on its structural properties was studied. High-temperature treatment leads to structural ordering of the initial Sibunit. As a result of preliminary graphitization, specific surface area decreases by a factor of 10, but thermal stability increases. A good correlation between XRD, Raman spectroscopy and TGA data is observed. For the Sibunit sample treated at 2200 °C, the interplanar distance d(002) estimated by XRD decreases by 0.05 A in comparison with the initial Sibunit, ID/IG decreases from 1.59 to 1.18, and the 2D line substantially increases, which testify to the structural ordering. According to TGA, the temperatures corresponding to the onset of oxidation, 50% oxidation and the end of oxidation of Sibunit calcined at 2200 °C are synchronously shifted by 100 °C with respect to the initial Sibunit.","PeriodicalId":377067,"journal":{"name":"NANOSCIENCE AND NANOTECHNOLOGY: NANO-SciTech","volume":"45 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"High-temperature modification of sibunit for its application as a support for ruthenium catalysts in ammonia synthesis\",\"authors\":\"V. A. Borisov, K. N. Iost, V. Temerev, Y. Surovikin, A. Smorokov, P. A. Fedotova, D. A. Shlyapin\",\"doi\":\"10.1063/1.5122036\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The effect of high-temperature (1400-2200°C) treatment of the carbon material Sibunit on its structural properties was studied. 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引用次数: 3
摘要
研究了高温(1400 ~ 2200℃)处理对硅基碳材料结构性能的影响。高温处理导致初始锡基的结构有序。由于初步石墨化,比表面积减少了10倍,但热稳定性增加。XRD、拉曼光谱和TGA数据具有良好的相关性。在2200℃下处理的Sibunit样品,XRD测得的面间距d(002)比初始Sibunit减小了0.05 A, ID/IG从1.59减小到1.18,2D线大幅增加,证明了结构的有序性。根据TGA, Sibunit在2200℃煅烧的氧化起始、50%氧化和氧化结束对应的温度相对于初始Sibunit同步移动了100℃。研究了高温(1400 ~ 2200℃)处理对硅基碳材料结构性能的影响。高温处理导致初始锡基的结构有序。由于初步石墨化,比表面积减少了10倍,但热稳定性增加。XRD、拉曼光谱和TGA数据具有良好的相关性。在2200℃下处理的Sibunit样品,XRD测得的面间距d(002)比初始Sibunit减小了0.05 A, ID/IG从1.59减小到1.18,2D线大幅增加,证明了结构的有序性。根据TGA, Sibunit在2200℃煅烧的氧化起始、50%氧化和氧化结束对应的温度相对于初始Sibunit同步移动了100℃。
High-temperature modification of sibunit for its application as a support for ruthenium catalysts in ammonia synthesis
The effect of high-temperature (1400-2200°C) treatment of the carbon material Sibunit on its structural properties was studied. High-temperature treatment leads to structural ordering of the initial Sibunit. As a result of preliminary graphitization, specific surface area decreases by a factor of 10, but thermal stability increases. A good correlation between XRD, Raman spectroscopy and TGA data is observed. For the Sibunit sample treated at 2200 °C, the interplanar distance d(002) estimated by XRD decreases by 0.05 A in comparison with the initial Sibunit, ID/IG decreases from 1.59 to 1.18, and the 2D line substantially increases, which testify to the structural ordering. According to TGA, the temperatures corresponding to the onset of oxidation, 50% oxidation and the end of oxidation of Sibunit calcined at 2200 °C are synchronously shifted by 100 °C with respect to the initial Sibunit.The effect of high-temperature (1400-2200°C) treatment of the carbon material Sibunit on its structural properties was studied. High-temperature treatment leads to structural ordering of the initial Sibunit. As a result of preliminary graphitization, specific surface area decreases by a factor of 10, but thermal stability increases. A good correlation between XRD, Raman spectroscopy and TGA data is observed. For the Sibunit sample treated at 2200 °C, the interplanar distance d(002) estimated by XRD decreases by 0.05 A in comparison with the initial Sibunit, ID/IG decreases from 1.59 to 1.18, and the 2D line substantially increases, which testify to the structural ordering. According to TGA, the temperatures corresponding to the onset of oxidation, 50% oxidation and the end of oxidation of Sibunit calcined at 2200 °C are synchronously shifted by 100 °C with respect to the initial Sibunit.