METHOD OF PURIFICATION OF THE INERT GAS FROM METHANE Russian patent published in 2006 - IPC B01D53/72 C01B23/00 

FIELD: chemical industry; metallurgy industry; methods of purification of inert gases from methane.

SUBSTANCE: the invention is pertaining to the field of chemical industry and metallurgy industry, in particular to the method of purification of the inert gas from methane, mainly to the methods of recording of ionizing radiations in the nuclear physics, where produce or use the ultrapure inert gases. Purification of the inert gas from methane is performed with the help of the catalyst, the composition of which contains metals of the platinum group (platinum and palladium) and the compound composed of oxides of metals with specific surface of no less than 50 m²/g (oxides of zirconium, cerium and the aluminum taken in the certain ratio). The catalyst is fixed on the inertial carrier made out of oxides of metals with a specific surface area of 1-10 m²/g (cordierite). The total contents of platinum and a palladium makes 0.5-5.0 % from the mass of the composition, and platinum and palladium are in the ratio of(in mass %): 30:70-100:0. Aluminum, cerium and zirconium oxides are taken in the ratio of (in mass %): 80:20:0-30:60:20. The purified gas is passing gate through the reactor, in which the catalyst is loaded, at the temperature of 170-190°C. The method ensures reduction of the contents of the methane admixture in the inert gas from with 40-0.2·10^-4 % of the volume up to the value of no more than 0.1·10^-4 % of the volume at presence of oxygen and nitrogen at the level of 1.0-20·10^-4 % of the volume.

EFFECT: the invention method ensures reduction of the contents of the methane admixture in the inert gas in the acceptable amount.

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