Process for improving the thermal stability of fluoro-chloro-hydrocarbon

摘要

In order to prevent corrosion damage and to improve the thermal stability of fluoro-chloro-hydrocarbons, in an installation containing such circulating media, a highly active adsorption filter containing an adsorbing agent based on Al2O3 and/or SiO2, and/or an adsorption filter containing a basic adsorbing agent is used. Also, iron-containing elements in contact with the working medium are passivated by hot nitriding.