Synthesis and catalytic properties of nanostructured Me/Mn0,5Ce0,5O2 in the oxidation of carbon monoxide
Abstract
Nanostructured solid solution of Mn0,5Ce0,5O2 is synthesized in order to develop an efficient catalysts for detoxification of man-made pollutants that do not contain precious metals. Its chemical and phase composition, texture characteristics were studied by DTA, XRD, laser mass spectrometry and low-temperature nitrogen adsorption. The activity of the solid solution is determined by the flow method in the oxidation of carbon monoxide in the temperature range 20– 300 ° C at atmospheric pressure, space velocity of the gas mixture 1800 h–1 and the composition of the gas mixture (vol.%): CO – 3,6, O2 – 8,0; N2 – balance. It is shown that the activity of Mn0,5Ce0,5O2 significantly higher activity MnOx and CeO2: 100% conversion temperature of – 92, 120, 210 ° C, respectively. Nanostructured catalysts Su/Mn0,5Ce0,5O2 and Ag/Mn0,5Ce0,5O2 prepared by impregnation method using a solid solution as a support. These catalysts show a high activity in the oxidation of carbon monoxide: the temperature of 100 % conversion is – 77 °С and 85 °C, respectively. New catalysts are of interest for the cleaning processes of vehicle emissions and industrial enterprises.
About the Authors
E. Yu. Lieberman
Российский химико-технологический университет им. Д.И. Менделеева, Москва
Russian Federation
Russian Federation
B. S. Kleusov
Российский химико-технологический университет им. Д.И. Менделеева, Москва
Russian Federation
Russian Federation
A. I. Mikhailichenko
Российский химико-технологический университет им. Д.И. Менделеева, Москва
Russian Federation
Russian Federation
T. V. Kon’kova
Российский химико-технологический университет им. Д.И. Менделеева, Москва
Russian Federation
Russian Federation
A. V. Khoroshilov
Российский химико-технологический университет им. Д.И. Менделеева, Москва
Russian Federation
Russian Federation
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Review
For citations:
Lieberman E.Yu., Kleusov B.S., Mikhailichenko A.I., Kon’kova T.V., Khoroshilov A.V. Synthesis and catalytic properties of nanostructured Me/Mn0,5Ce0,5O2 in the oxidation of carbon monoxide. Kataliz v promyshlennosti. 2012;(3):44-49. (In Russ.)
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