SUPERCRITICAL CONDITIONED GAS MIXTURE CONTAINING CO2, NO AND OPTIONALLY A NEUTRAL GAS

摘要

The invention relates to a conditioned NO / CO2 mixture containing at least nitrogen monoxide (NO) and carbon dioxide (CO2), characterized in that it is in the supercritical state. Preferably, the pressure of said NO / CO2 mixture is greater than approximately 73.105 Pa at 304.21 K. The invention further relates to a pressure vessel, such as a gas cylinder, containing such a NO / CO2 mixture at 1 'supercritical state and a method of expansion of such a NO / CO2 mixture making it possible to guarantee a constant concentration of NO during the emptying time of the gas cylinder.