R 32 Reduction of nitrogen oxides with ammonia over complex vanadium and chromium oxides / V. L. Volkov, G. S. Zakharova, L. V. Strukova, T. Edkhazi, O. V. Pozdnyakova // Russian Chemical Bulletin. - 1996. - Vol. 45, № 2. - P324-327 : il. - Bibliogr. : p. 327 (3 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): ОКСИДЫ КОМПЛЕКСНЫЕ -- ВАНАДИЙ -- ХРОМ -- КАТАЛИТИЧЕСКИЕ СВОЙСТВА Аннотация: Catalytic properties of γ-Al203-supported complex vanadium and chromium oxides V2-xCrx05-δ (0 < x < 1.3), amorphous to X-rays, in the reduction of nitrogen oxides with ammonia were studied. Vanadium exists in these catalysts mostly in a pentavalent state and chromium exists as Cr 3+ and Cr 6+. As the content of chromium in the catalysts increases, the optimal temperature of the process decreases, and the degree of conversion of nitrogen oxides increases Полный текст |