Zobrazeno 1 - 10
of 45
pro vyhledávání: '"G. Varsányi"'
Publikováno v:
Surface and Interface Analysis. 19:586-590
For model calculations it is assumed that metal spheroids are randomly distributed on spherical support particles of nearly closest-packed arrangement. Both the metal and the support can be covered with layers or submonolayers of promoter(s) and carb
Publikováno v:
Solid State Ionics. 44:33-39
In the case of gas-solid type reactions not only the bulk phase but also the surface energetics may govern the process of interaction. In the temperature range 300–1070 K, where bulk phase reactions of γ-alumina with Cl2 are highly unfavoured for
Publikováno v:
Surface and Interface Analysis. 9:237-241
Silica-alumina catalysts have been applied for a long time in cracking and reforming reactions. Lewis type surface sites are generally accepted to serve as active centers. In this respect, surface properties of these materials are of main concern. In
Autor:
G. Varsányi, M. Kubinyi
Publikováno v:
Journal of Molecular Structure. 45:107-112
Autor:
G. Varsányi, M. Kubinyi
Publikováno v:
Spectroscopy Letters. 9:689-696
The infrared and far infrared spectra of complexes formed between p-benzoquinone and phenol derivatives were studied in the crystalline state. The spectra showed the compounds to be weakly polar charge transfer complexes with hydrogen bonds. In the f
Publikováno v:
Surface and Interface Analysis. 12:527-530
The mechanical properties of Si3N4 based ceramic bodies are largely controlled by the phases formed on the grain boundaries during sintering. For this reason determination of the state and the chemical composition of the surface of the starting Si3N4
Autor:
A. Grofcsik, Gábor Keresztury, E. Baitz, A. Tóth, L. Sztraka, F. Billes, Á Kiss, G. Horváth, G. Varsányi, S. Szőke, G. Jalsovszky
Publikováno v:
Acta Physica Academiae Scientiarum Hungaricae. 35:219-238
Several structure-spectrum correlations has been established on nitrogen containing six membered aromatic heterocyclic compounds. 1. Some characteristic differences between vibrational skeletal frequencies were correlated with the product of two inte
Publikováno v:
Spectrochimica Acta Part A: Molecular Spectroscopy. 40:529-538
Infrared and Raman spectra of Ph4Si have been studied in solution, in the melt and in the crystalline state. Its isooriented polycrystalline thin layers have been investigated using polarized i.r. wavelengths. In solution and in the melt group vibrat
Publikováno v:
Journal of Molecular Structure. 115:189-192
Vibrational spectra of Ph 4 Si have been studied from 600 to 20 cm −1 in solution, in the melt and in the crystalline state. The assignments proposed for the substituent sensitive benzene ring vibrations, for the skeletal bending modes and ring lib
Publikováno v:
Spectrochimica Acta. 19:683-689