Zobrazeno 1 - 10
of 31
pro vyhledávání: '"O. A. Zalkind"'
Publikováno v:
Inorganic Materials. 56:1258-1264
An yttrium ammonium carbonate with the composition NH4Y(CO3)2 ∙ H2O has been prepared by reacting hydrated yttrium oxide with ammonium carbonate at 80°C. The synthesis process has been shown to proceed through crystallization of two intermediate p
Publikováno v:
Russian Journal of General Chemistry. 89:2453-2457
The processes occurring during the mechanical activation of a-Fe2O3 (hematite) in the presence of oleic acid in a centrifugal-planetary mill have been investigated. Mechanical activation for 10 h afforded hematite powder with particles size of 10–4
Publikováno v:
Russian Journal of General Chemistry. 87:2258-2264
Nanocrystalline lanthanum zirconate La2Zr2O7 was synthesized by the solid-phase method using preliminary mechanical activation of a La2O3 and ZrO2 mixture. Processes occurring during heating the mixture of mechanoactivated lanthanum and zirconium oxi
Publikováno v:
Russian Journal of Inorganic Chemistry. 62:827-835
Thermal decomposition of fluorooxalatozirconates (FOxZs) K3ZrF5C2O4, K2ZrF4C2O4 ⋅ 2H2O, KZrF3C2O4 ⋅ 3H2O, and Zr4O3F2(C2O4)4 ⋅ 2H2O in air flow is studied. Crystalline K2ZrF4C2O4 and KZrF3C2O4 are detected. The decomposition onset temperature o
Publikováno v:
Russian Journal of Inorganic Chemistry. 60:347-354
The system ZrO(NO3)2-H2C2O4-KF-H2O was studied in the sections C2O42− : Zr = 1 and 2. The following compounds were isolated: crystalline fluorooxalate zirconates K3ZrF5C2O4, K2ZrF4C2O4 · 2H2O, KZrF3C2O4 · 3H2O, and KZr2(OH)3F2(C2O4)2 · 4H2O, and
Autor:
E. V. Kalinkina, B. I. Gurevich, O. A. Zalkind, Alexander M. Kalinkin, V. V. Tykavkina, S. I. Mazukhina
Publikováno v:
Inorganic Materials. 50:1179-1184
We have studied the feasibility of improving the reactivity of ferromagnesian slag through the mechanical activation of the slag with small additions of carbonate minerals in a centrifugal planetary mill. The results demonstrate that, like in the cas
Publikováno v:
Russian Journal of Inorganic Chemistry. 58:756-762
The thermal stability of cesium fluorophosphatohafnates (crystalline CsHf2F2(HPO4)2PO4 · 2H2O, CsHfF2PO4 · 0.5H2O, CsHf2F6PO4 · 4H2O and X-ray amorphous Cs2Hf3O1.5F5(PO4)2 · 5H2O, Cs5H4Hf3F7(PO4)3.66(NO3)3 · 5H2O) was determined. The weight rati
Publikováno v:
Journal of Structural Chemistry. 54:696-701
Potassium, rhubidium, and caesium fluorophosphatozirconates (hafnates) and oxo(hydroxo)fluorophosphatonitratometalates with PO43−/Zr molar ratios of 2.0, 1.5, 1.0, 0.66, 0.5, and 0.33 are synthesized for the first time. Most of them form either fin
Publikováno v:
Russian Journal of Inorganic Chemistry. 58:274-279
Methods were developed for preparing Ta2O5:Zn alloys containing less than 3 wt % Zn2+ for the purpose of using them further in preparing lithium tantalate batches and growing from them single crystals having improved properties. A method where zinc i
Autor:
V. K. Kopkov, N. L. Mikhailova, O. A. Zalkind, G. I. Kadyrova, V. G. Maiorov, V. Ya. Kuznetsov, A. I. Nikolaev
Publikováno v:
Russian Journal of Applied Chemistry. 85:1820-1826
Solutions containing 500 g L−1 Nb2O5 were obtained by sintering Nb2O5 with potash followed by leaching with water. The potassium niobate released from niobium(V) alkaline solutions was examined with an application of methods of physical and chemica