Vibrational spectroscopic investigation of the goethite thermal decomposition products     

G. N. Kustova  E. B. Burgina  V. A. Sadykov  S. G. Poryvaev 《Physics and Chemistry of Minerals》1992,18(6):379-382

Goethite, hematite and intermediate products of goetite thermal decomposition were studied by IR and Raman spectroscopy to identify these products used as catalysts of some chemical reactions. The presence of a small number of OH-groups in the products of the decomposition up to 900–1000° C was supposed to hinder the formation of perfect hematite structure. The hypothesis concerning C _3v ⁶ space group of protohematite indistinguishable from D _3d ⁶ space group of hematite by X-Ray diffraction was suggested. This hypothesis explains both the additional lines in IR and Raman spectra compared to hematite spectra and the same position of peaks in X-Ray diffraction picture.  相似文献   

Relationship between Permeability,Porosity, and Microstructure of Sea Ice in Amur Bay Based on In-Situ Measurements and Magnetic Resonance Tomography     

Melnichenko  N. A.  Tyuveev  A. V.  Lazaryuk  A. Yu.  Kustova  E. V.  Kharlamov  P. O. 《Oceanology》2022,62(4):464-470

Oceanology - The article presents the results of a study on the microstructure of fast sea ice in Amur Bay for 2013–2018 based on hydrological observations and magnetic resonance imaging...  相似文献   

Vertical Distribution of Brine and Volume Structure of Thin Annual Ice in Amursky Bay Based on the Methods of Nuclear Magnetic Resonance and Magnetic Resonance Imaging     

Mel’nichenko  N. A.  Tyveev  A. V.  Lazaryuk  A. Yu.  Savchenko  V. E.  Kustova  E. V. 《Oceanology》2019,59(5):777-786

Oceanology - Spatial distribution of the liquid and solid phases in the pores of first-year sea ice in Amursky Bay was studied using the method of nuclear magnetic resonance and magnetic resonance...  相似文献