[en] In this article the paper of the catalysis is stood out in the improvement of the environment. A revision of the recent progresses is presented in the use of certain zeolitic material like catalysts for the elimination of the nitric oxide of combustion systems, the methods are indicated more employees for its removal, as well as the advantages and disadvantages of the solutions proposed at the present time, it is emphasized, also, about the necessity of carrying out more investigation than it drives to the development of an active catalyst for the decomposition of nitric oxide in their elements