Porosity and structural parameters of Karelian shungites according to the data of small-angle synchrotron radiation scattering and microscopy
- Authors: Golubev Y.A.1, Ulyashev V.V.1, Veligzhanin A.A.2
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Affiliations:
- Institute of Geology, Komi Science Center, Ural Branch
- National Research Centre “Kurchatov Institute”
- Issue: Vol 61, No 1 (2016)
- Pages: 66-76
- Section: Nanomaterials and Ceramics
- URL: https://journals.rcsi.science/1063-7745/article/view/189614
- DOI: https://doi.org/10.1134/S1063774516010077
- ID: 189614
Cite item
Abstract
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.
About the authors
Ye. A. Golubev
Institute of Geology, Komi Science Center, Ural Branch
Author for correspondence.
Email: golubev@geo.komisc.ru
Russian Federation, Syktyvkar, 167982
V. V. Ulyashev
Institute of Geology, Komi Science Center, Ural Branch
Email: golubev@geo.komisc.ru
Russian Federation, Syktyvkar, 167982
A. A. Veligzhanin
National Research Centre “Kurchatov Institute”
Email: golubev@geo.komisc.ru
Russian Federation, pl. Akademika Kurchatova 1, Moscow, 123182