Zobrazeno 1 - 10
of 73
pro vyhledávání: '"A. I. Bortun"'
Autor:
V. V. Milyutin, A. I. Bortun, T. S. Psareva, T. A. Shaposhnikova, V. V. Strelko, V. G. Mil’grandt, V. M. Gelis, I.Z. Zhuravlev
Publikováno v:
Radiochemistry. 57:73-78
Sorption of microamounts of 137Cs from solutions of various compositions onto semicrystalline alkali metal silicotitanates (TiSi) was studied. The pore structure analysis showed that the TiSi samples formed under the conditions of the experiments had
Publikováno v:
Inorganic Chemistry. 47:7207-7210
Microcrystals of the first ammonium-thorium phosphates, (NH 4) 2Th(PO 4) 2.H 2O (tetragonal, I4 1/ amd, a = 7.0192(4) A, c = 17.9403(8) A) and NH 4Th 2(PO 4) 3 (monoclinic, C2/ c, a = 17.880(6) A, b = 6.906(1) A, c = 8.152(2) A, beta = 104.39(2) degr
Publikováno v:
Inorganic Chemistry. 44:3512-3517
Th(2)(PO(4))(2)(HPO(4)).H(2)O was synthesized under wet hydrothermal conditions starting from a mixture of H(3)PO(3) and Th(NO(3))(4).5H(2)O. The crystal structure was solved by powder X-ray diffraction data. The unit cell parameters are a = 6.7023(8
Autor:
Pilar Pertierra, Sergei A. Khainakov, Santiago García-Granda, Anatoly I. Bortun, Miguel A. Salvadó, José R. García
Publikováno v:
Inorganic Chemistry Communications. 5:824-828
A novel framework mixed tin–zirconium silicate, K2Sn0.25Zr0.75Si3O9·H2O (1), was synthesized under mild hydrothermal conditions. The unit cell is orthorhombic, a=10.260(2) A, b=13.272(2) A, c=7.174(1) A, space group P212121, Z=4. Isotypic with the
Autor:
José R. García, Camino Trobajo, Sergei A. Khainakov, Miguel A. Salvadó, Aranzazu Espina, Anatoly I. Bortun, Pilar Pertierra, Santiago García-Granda, A. Martin-Izard
Publikováno v:
Chemistry of Materials. 13:4457-4462
The reaction between natural phlogopite, having the idealized formula KMg3(AlSi3O10)(OH)2, and phenylphosphonic acid under soft conditions (24 h, 80 °C, reflux) originated a new layered material of the following idealized composition: [Mg(H2O)2]0.5(
Autor:
Santiago García-Granda, Miguel A. Salvadó, Abraham Clearfield, Pilar Pertierra, José R. García, Anatoly I. Bortun
Publikováno v:
Materials Science Forum. :665-670
Autor:
Pillar Pertierra, José R. García, Lyudmila N. Bortun, Abraham Clearfield, Santiago García-Granda, Anatoly I. Bortun, Miguel A. Salvadó
Publikováno v:
Materials Research Bulletin. 36:717-725
A new cyclohexasilicate, K 2 PbSi 3 O 9 ·H 2 O, was synthesized under mild hydrothermal conditions. The crystal structure was solved by powder X-ray diffraction data. The unit cell is monoclinic, a = 6.5623(2), b = 11.7757(3), c = 13.0483(3) A, β =
Autor:
Nicola Allison, Sergey V. Mikhalovsky, Anatoliy I. Bortun, Susan Solbra, Lyudmila N. Bortun, Stephen Waite, Abraham Clearfield
Publikováno v:
Environmental Science & Technology. 35:626-629
The ion exchange properties of the titanium silicate, M2Ti2O3SiO4.nH2O (M = H, Na), toward stable and radioactive 137Cs+ and 89Sr2+, have been examined. By studying the cesium and strontium uptake in the presence of NaNO3, CaCl2, NaOH, and HNO3 (in t
Publikováno v:
Journal of the Chemical Society, Dalton Transactions. :753-757
n-Alkylamines were intercalated into Ti2O3(H2AsO4)2·2H2O (TiOAs) and Zr2O3(HAsO4)·3H2O (ZrOAs) by exposing the solids to the amine vapour. The formulae of the intercalation compounds are Ti2O3(H2AsO4)2·1.7CnH2n + 1NH2·2H2O and Zr2O3(HAsO4)·0.6Cn
Publikováno v:
Reactive and Functional Polymers. 43:85-95
The ion-exchange properties of the titanium silicate, M 2 Ti 2 O 3 SiO 4 · n H 2 O (M=H,Na), towards alkali ions has been examined. Potentiometric titration of the highly crystalline phase in the proton form, H 2 Ti 2 O 3 (SiO 4 )·1.6H 2 O, showed