Zobrazeno 1 - 10
of 15
pro vyhledávání: '"I. V. Markichev"'
Publikováno v:
Russian Chemical Reviews. 64:389-414
The review gives a systematic account of the results of detailed studies of the vibrational spectra of a series of industrial amorphous highly disperse silicas (aerosil, silica gel, aerogel) with the aid of inelastic neutron scattering. The observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e5acffe25d5e74ef9e62be9a3352760
https://doi.org/10.1070/rc1995v064n05abeh000156
https://doi.org/10.1070/rc1995v064n05abeh000156
Autor:
V. Chukalin, N. Goncharova, Ekaterina A. Nikitina, V. Khavryutchenko, Elena F. Sheka, I. V. Markichev, Ireneusz Natkaniec
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 67:133-139
In practice, the chemical formula Si 3 N 4 represents a family of materials in which Si 3 N 4 constitutes the major phase. The properties of each family member depends, in part, on its microstructure developed during manufacturing. In this paper, pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::baa4c5cd4f0f21539f7a470154de2492
https://doi.org/10.1016/0368-2048(93)02036-l
https://doi.org/10.1016/0368-2048(93)02036-l
Publikováno v:
Journal of Structural Chemistry. 34:523-533
Comparative analysis has been carried out on a set of partial basis spectra of the doubly amplitude-weighted density of vibration states (AWDS) of four dispersive silica: aerosil A380, silica gels SG20 and SG100 (with pore sizes 20 and 100 A), and ae
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a53c850845934853ab991d35c267e6b
https://doi.org/10.1007/bf00753520
https://doi.org/10.1007/bf00753520
Publikováno v:
Journal of Structural Chemistry. 34:513-522
Capillary-hollow silica (aerogel) is regarded as a three-component system consisting of the silica core, the hydroxyl component, and absorbed water. Its spectra of the doubly amplitude-weighted density of vibration states (AWDS), recorded at 10 K usi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8598e420551b0686fd53bd6796cdf0e
https://doi.org/10.1007/bf00753519
https://doi.org/10.1007/bf00753519
Autor:
Ireneusz Natkaniec, I. V. Markichev, Elena F. Sheka, A. Chuyko, Ogenko Vladimir M, V. Khavryutchenko
Publikováno v:
Reaction Kinetics & Catalysis Letters. 50:221-226
Four families of disperse amorphous silica representing different solid species modifications have been studied by inelastic neutron scattering at 10, 80 and 290 K. Doubly amplitude-weighted density of vibrational states (AWDS) have been obtained fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc10deff3d520ff2d2e453d43e1bbbc8
https://doi.org/10.1007/bf02062215
https://doi.org/10.1007/bf02062215
Publikováno v:
Journal of Structural Chemistry. 34:56-67
Silica gel is considered a three-component system consisting of a silica core, hydroxyl shell, and pore-retained water. Inelastic neutron scattering was used to obtain a set of amplitude-weighted vibrational state density (AWSD) spectra of two silica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8f258f9ad4abc578f09a0cf5bda55a8
https://doi.org/10.1007/bf00745402
https://doi.org/10.1007/bf00745402
Publikováno v:
Journal of Structural Chemistry. 34:46-55
Aerosil (pyrogenous dispersed silica) is considered as a three-component system consisting of a silica core, hydroxyl shell, and adsorbed water. Factoring was carried out for its amplitude-weighted vibrational state density (AWSD) spectra obtained us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15be43f6807af4aeb53097f6857ad6dd
https://doi.org/10.1007/bf00745401
https://doi.org/10.1007/bf00745401
Autor:
I. V. Markichev, V. D. Khavryuchenko, I. Natkanets, P. B. Nechitailov, A. Yu. Muzychka, Elena F. Sheka
Publikováno v:
Journal of Structural Chemistry. 33:536-544
A complex experiment has been carried out to examine the vibrational spectrum of Aerosil, and it has been found that the silanol group is the main active center of this type of dispersed silica. This fact conforms well with the previously advanced su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e236ea4e9a6e1160c467fc33803e8844
https://doi.org/10.1007/bf00746931
https://doi.org/10.1007/bf00746931
Publikováno v:
Journal of Structural Chemistry. 34:37-45
A new method is proposed for factoring the spectrum of a multicomponent system when the basis spectra of its components are unknown and the set of the weighting coefficients in the initial spectrum is incomplete. At the basis of this method is the po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e91fec2dda502bc80759594553767cc
https://doi.org/10.1007/bf00745400
https://doi.org/10.1007/bf00745400
Autor:
I. V. Markichev, P. B. Nechitailov, V. Khavryutchenko, A. Muzychka, Ireneusz Natkaniec, Ogenko Vladimir M, Elena F. Sheka
Publikováno v:
Physica B: Condensed Matter. 174:182-186
Computational and real neutron scattering experiments are presented. The computations were performed in a modern cluster approximation, which is used in computational chemistry. The amplitude-weighted densities of the vibrational states for a few mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb449dffdcd3054e1e2994aed557e201
https://doi.org/10.1016/0921-4526(91)90603-c
https://doi.org/10.1016/0921-4526(91)90603-c