TY  - SER
AU  - Izaak,Tatyana I.
AU  - Kharlamova,Tamara S.
AU  - Vodyankina,Olga V.
TI  - Supported MgO–V2O5/Al2O3 catalysts for oxidative propane dehydration: effect of the molar Mg : V ratio on the phase composition and catalytic properties of samples
KW  - окислительное дегидрирование
KW  - катализаторы на основе оксида ванадия
KW  - ванадаты магния
KW  - статьи в журналах
N1  - Библиогр.: 47 назв
N2  - The physicochemical properties of V2O5/Al2O3 and MgO–V2O5/Al2O3 supported catalysts (Mg : V = 1 : 1, 2 : 1, and 3 : 2) obtained by consecutive impregnation of the support with solutions of vanadium and magnesium precursors are studied using a complex of mutually complementary methods (XRD, Raman spectroscopy, UV–Vis spectrometry, and TPR-H2). The effect of the formation of surface magnesium vanadates of various composition and structure on the catalytic properties of the supported vanadium oxide catalysts in the oxidative dehydrogenation of propane is studied. The introduction of magnesium in the samples and an increase in its content, accompanied by a change in the structure of the surface vanadium oxide phases from polymeric VO6/VO5 species to surface metavanadate species, magnesium metavanadate, and further to magnesium divanadate, significantly affects their catalytic properties in the reaction of the oxidative dehydrogenation of propane to propylene
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000618603
ER  -