Zobrazeno 1 - 10
of 28
pro vyhledávání: '"G. M. Maksimov"'
Autor:
Andrey A. Saraev, G. M. Maksimov, E. Yu. Gerasimov, R. M. Kenzhin, Aleksey A. Vedyagin, V. V. Kaichev
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 132:171-185
The present work is devoted to the development of a versatile method of Au/TiO2 catalysts preparation using a polyoxometalate-based approach. It has been shown that the addition of polyoxometalates into an aqueous solution of Au3+ hydroxocomplexes ha
Publikováno v:
Kinetics and Catalysis. 56:428-433
The gas-phase chlorination of propane over different catalysts, including those containing ruthenium oxychlorides as the active component, has been investigated. The propylene and chlorine-containing product formation selectivities in propane chlorin
Autor:
Vladimir I. Zaikovskii, V. G. Vasil’ev, R. I. Maksimovskaya, M. A. Fedotov, Oxana A. Kholdeeva, S. S. Arzumanov, G. M. Maksimov
Publikováno v:
Journal of Structural Chemistry. 50:618-627
Heteropoly acid (HPA) H8(PW11TiO39)2O·xH2O (I) is synthesized by three different ways and studied by chemical analysis, potentiometric titration, mass-spectrometry, IR, 31P, 183W, and 17O NMR spectroscopy, thermogravimetry, and transmission electron
Autor:
Vladimir A. Likholobov, E. A. Paukshtis, G. S. Litvak, A. N. Salanov, A. A. Budneva, G. M. Maksimov
Publikováno v:
Kinetics and Catalysis. 47:564-571
Thirty (5–40)% WO3/MO2 (M = Zr, Ti, Sn), heterogeneous acidic catalysts have been synthesized by two methods, specifically, via homogeneous acid solutions and from solutions brought to pH 9 with ammonia, both followed by calcination at 600–900°C
Publikováno v:
Russian Chemical Bulletin. 52:103-108
According to the 31P NMR spectroscopy, heteropolyacid (HPA) H6P2Mo18O62·nH2O (P2Mo18), α-isomer of the Dawson structure, transforms upon heating above 80 °C partially (up to 30%) to γ-isomer, in which both polar groups Mo3O13 of the heteropolyani
Publikováno v:
Inorganic Materials. 39:687-693
A method is proposed for the synthesis of heteropoly acids from oxides of molybdenum, tungsten, and vanadium via mechanochemical activation. The fundamental principles of this approach to the synthesis of heteropoly acids containing different ligands
Publikováno v:
Russian Chemical Bulletin. 50:587-590
The acidity on the “proton affinity” scale was determined by IR spectroscopy of the pyridinium salts for nineteen heteropoly acids of nine structural types (including two with the previously unknown structure) and one isopoly acid. All heteropoly
Publikováno v:
Kinetics and Catalysis. 42:785-790
The acid properties of heteropoly acids of the following three structure types were studied by conductometry in acetic acid: Keggin (H3PW12O40, H3PMo12O40, H4SiW12O40, H3PW11ThO39; and H5PW11XO40, where X(IV) = Ti or Zr), Dawson (α-H6P2W18O62and α-
Publikováno v:
Kinetics and Catalysis. 42:217-222
The 31P NMR method shows that four forms of titanium(IV)-monosubstituted Keggin-type heteropolytungstate (Ti–HPA) exist in MeCN: the dimer (Bu4N)7[{PTiW11O39}2OH] (in the abbreviated form, (PW11Ti)2OH or H1), its conjugate base (PW11Ti)2O (1), and
Publikováno v:
Kinetics and Catalysis. 42:30-34
Hammett acidity functions H0 of solutions of heteropoly acids H5PW11XO40 (X(IV) = Ti, Zr), H3PW12O40, H4SiW12O40, H6P2W21O71, and H21B3W39O132, as well as HClO4 and CF3SO3H, in water and 90% aqueous acetone and acetonitrile, are measured at 20°C by