{"title":"太赫兹频段黄铁矿热解特性的表征","authors":"Tong Zhang, Cheng Song, Zhi-Yuan Zheng, Si-Qi Zhang, Hao-Chong Huang, Jun-Feng Shen, Xiao-Wei Li","doi":"10.1007/s11770-024-1067-x","DOIUrl":null,"url":null,"abstract":"<p>A systematic terahertz spectroscopy study of the mineral phase transformation process of natural pyrite samples heated in a nitrogen atmosphere is conducted. In addition, the pyrolysis process of pyrite in the 400 °C–800 °C temperature range is analyzed and discussed. This study is based on X-ray diffraction (XRD) and thermogravimetric-derivative thermogravimetric (TG-DTG) analysis of the corresponding thermal transformation sequences of pyrite, magnetopyrite, and sulfurous pyrite as the desulfurization process proceeds. Terahertz time-domain spectroscopy is employed to characterize the optical properties of the pyrolysis products. The results show that pyrite, magnetopyrite and sulfurous pyrite exhibit different absorption coefficients and refractive indices in the terahertz frequency band. The different optical properties of these products provide useful information for the investigation of the pyrolysis process of pyrite and the magnetic properties of environmental sediments.</p>","PeriodicalId":55500,"journal":{"name":"Applied Geophysics","volume":"38 1","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2024-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Characterization of pyrolytic properties of pyrite in the terahertz frequency band\",\"authors\":\"Tong Zhang, Cheng Song, Zhi-Yuan Zheng, Si-Qi Zhang, Hao-Chong Huang, Jun-Feng Shen, Xiao-Wei Li\",\"doi\":\"10.1007/s11770-024-1067-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>A systematic terahertz spectroscopy study of the mineral phase transformation process of natural pyrite samples heated in a nitrogen atmosphere is conducted. In addition, the pyrolysis process of pyrite in the 400 °C–800 °C temperature range is analyzed and discussed. This study is based on X-ray diffraction (XRD) and thermogravimetric-derivative thermogravimetric (TG-DTG) analysis of the corresponding thermal transformation sequences of pyrite, magnetopyrite, and sulfurous pyrite as the desulfurization process proceeds. Terahertz time-domain spectroscopy is employed to characterize the optical properties of the pyrolysis products. The results show that pyrite, magnetopyrite and sulfurous pyrite exhibit different absorption coefficients and refractive indices in the terahertz frequency band. The different optical properties of these products provide useful information for the investigation of the pyrolysis process of pyrite and the magnetic properties of environmental sediments.</p>\",\"PeriodicalId\":55500,\"journal\":{\"name\":\"Applied Geophysics\",\"volume\":\"38 1\",\"pages\":\"\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Geophysics\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1007/s11770-024-1067-x\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Geophysics","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1007/s11770-024-1067-x","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
摘要
对在氮气环境中加热的天然黄铁矿样品的矿物相变过程进行了系统的太赫兹光谱研究。此外，还分析和讨论了黄铁矿在 400 °C-800 °C 温度范围内的热解过程。该研究基于 X 射线衍射 (XRD) 和热重-衍生热重 (TG-DTG) 分析了黄铁矿、磁黄铁矿和硫黄铁矿在脱硫过程中相应的热转变序列。太赫兹时域光谱法用于表征热解产物的光学特性。结果表明，黄铁矿、磁黄铁矿和硫黄铁矿在太赫兹频段表现出不同的吸收系数和折射率。这些产物的不同光学特性为研究黄铁矿的热解过程和环境沉积物的磁性能提供了有用的信息。
Characterization of pyrolytic properties of pyrite in the terahertz frequency band
A systematic terahertz spectroscopy study of the mineral phase transformation process of natural pyrite samples heated in a nitrogen atmosphere is conducted. In addition, the pyrolysis process of pyrite in the 400 °C–800 °C temperature range is analyzed and discussed. This study is based on X-ray diffraction (XRD) and thermogravimetric-derivative thermogravimetric (TG-DTG) analysis of the corresponding thermal transformation sequences of pyrite, magnetopyrite, and sulfurous pyrite as the desulfurization process proceeds. Terahertz time-domain spectroscopy is employed to characterize the optical properties of the pyrolysis products. The results show that pyrite, magnetopyrite and sulfurous pyrite exhibit different absorption coefficients and refractive indices in the terahertz frequency band. The different optical properties of these products provide useful information for the investigation of the pyrolysis process of pyrite and the magnetic properties of environmental sediments.
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The journal is designed to provide an academic realm for a broad blend of academic and industry papers to promote rapid communication and exchange of ideas between Chinese and world-wide geophysicists.
The publication covers the applications of geoscience, geophysics, and related disciplines in the fields of energy, resources, environment, disaster, engineering, information, military, and surveying.
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