Porosity and structural parameters of Karelian shungites according to the data of small-angle synchrotron radiation scattering and microscopy

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• 作者：Ye. A. Golubev ; V. V. Ulyashev ; A. A. Veligzhanin
• 刊名：Crystallography Reports
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：61
• 期：1
• 页码：66-76
• 全文大小：1,089 KB
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• 作者单位：Ye. A. Golubev (1)
  V. V. Ulyashev (1)
  A. A. Veligzhanin (2)
  
  1. Institute of Geology, Komi Science Center, Ural Branch, Russian Academy of Sciences, Syktyvkar, 167982, Russia
  2. National Research Centre “Kurchatov Institute”, pl. Akademika Kurchatova 1, Moscow, 123182, Russia
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Crystallography
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1562-689X

文摘

The nanoporosity and structure of natural carbons has been investigated on the example of Karelian carbon-rich shungites by comparing the data of small-angle synchrotron radiation scattering and highresolution microscopy. The analysis of small-angle scattering data is based on the model of scattering spheres with lognormal size distribution. It is found that the structure of samples from the Maksovo and Zazhogino deposits subjected to high temperatures in the geological medium and (also to a lesser extent) a sample from the Shunga deposit can be described as an aggregation of polydisperse scattering spheres with lognormal size distribution; the characteristic scatterer size is determined for them. A comparison with microscopy data shows that these scatterers are mainly associated with pores, and the character of their size distribution is similar to that previously established for nanoglobules in schungites. Original Russian Text © Ye.A. Golubev, V.V. Ulyashev, A.A. Veligzhanin, 2016, published in Kristallografiya, 2016, Vol. 61, No. 1, pp. 74–85.