Zobrazeno 1 - 10
of 15
pro vyhledávání: '"A N, Nadeev"'
Autor:
Lyubov A. Isupova, L. S. Dovlitova, G. S. Litvak, E. F. Sutormina, E. Yu. Gerasimov, D. V. Ivanov, N. F. Saputina, A. N. Nadeev, I. S. Yakovleva
Publikováno v:
Kinetics and Catalysis. 54:119-129
The possibility of synthesizing perovskite-type LaMO3 (M = Mn, Co, Fe) oxides by microwave irradiation of crystalline hydrates of nitrates was studied. Oxides with the perovskite structure form at the microwave irradiation stage; however, the resulti
Autor:
Alexander N. Nadeev, Aleksey A. Vedyagin, Kenneth J. Klabunde, Ekaterina V. Ilyina, Alexander F. Bedilo, Ilya V. Mishakov, Svetlana V. Cherepanova
Publikováno v:
Microporous and Mesoporous Materials. 160:32-40
Homogeneously mixed mesoporous VOx/MgO aerogels with vanadium concentrations ranging up to 26 wt.% with the surface area as high as 1200 m2/g were synthesized by hydrolysis of a mixture of vanadium and magnesium alkoxides followed by gelation and hig
Autor:
L. G. Pinaeva, Igor P. Prosvirin, D. V. Ivanov, Lyubov A. Isupova, L. S. Dovlitova, A. N. Nadeev
Publikováno v:
Catalysis Letters. 141:322-331
In this paper a wide range of La1−x Sr x MnO3 (x = 0–0.7) perovskites was synthesized by Pechini route, characterized by XRD (including high temperature measurements), XPS, differential dissolution phase analysis, TPR H2, oxygen exchange and test
Structural features of the formation of La1−x Ca x FeO3−δ (0 ≤x ≤ 0.7) hetero valent solid solutions
Publikováno v:
Journal of Structural Chemistry. 51:891-897
A synthesis method with the use of polymer-salt compositions (calcination temperature 800°C) provides the preparation of various solid solutions of a La1−x Ca x FeO3−δ series in the 0≤ x≤ 0.7 range, which belong to the perovskite structure
Autor:
Lyubov A. Isupova, A. N. Nadeev, Vladimir A. Rogov, E. F. Sutormina, A. A. Budneva, Elena B. Burgina, V. P. Ivanov
Publikováno v:
Kinetics and Catalysis. 50:892-898
The changes in the properties of the oxide monolith catalyst IK-42-1 for ammonia oxidation upon 3540-h-long operation as the second stage of a UKL-7 industrial reactor were studied by X-ray diffraction, chemical analysis, secondary ion mass spectrome
Autor:
O. Yu. Podyacheva, S. V. Tsybulya, A.N. Shmakov, M. G. Ivanov, A. N. Nadeev, Z. R. Ismagilov, Vladimir A. Rogov
Publikováno v:
Catalysis Today. 147:270-274
The phase stability of SrCo0.8Fe0.2O3−d perovskite doped with niobium was studied by in situ high-temperature X-ray diffraction in the temperature range of 30–1000 °C and oxygen partial pressure 0.2–10−5 atm. The stability of the cubic perov
Publikováno v:
Journal of Structural Chemistry. 50:108-113
Phase transformations in a sample from the series La1−xSrxFeO3−δ (x = 0.75) with cubic symmetry and perovskite type structure were studied by high-temperature X-ray diffraction. In air, the solid solution was stable to the synthesis temperature
Publikováno v:
Journal of Structural Chemistry. 49:1077-1083
In the present study high-temperature X-ray diffraction, thermal analysis, and mass-spectrometry have been employed for investigation of samples in the La1−xSrxFeO3−δ family (0 ≤ x ≤ 1), the materials being solid solutions having perovskite
Publikováno v:
Solid State Ionics. 179:1076-1079
In the present work, solid solutions of the composition SrFe 1 − x M x O 3 − z , where M = Mo, W and 0 x 0.5, are synthesized. The structure of the new materials depending on the composition and on oxygen stoichiometry is studied; the results of
Publikováno v:
Kinetics and Catalysis. 49:133-137
La1 − xBaxFeO3 − δ (x = 0–1) perovskites were prepared by the mechanical activation of mixtures of binary oxides in a centrifugal planetary ball mill for 3 min followed by calcination at 1100°C for 4 h, and their phase composition was determi