Adsorption unit for volatile hydrocarbons containing an adsorbent material mainly composed of a molecular sieve containing iron

摘要

Adsorption unit for volatile hydrocarbons for controlling the emission of volatile hydrocarbons comprising hydrocarbon adsorbent material, said adsorbent material containing a molecular sieve comprising iron and a metal in the +1 oxidation state, characterized in that the iron loaded by an ion exchange solid state, the iron content is between 0, 1 and 10% by weight relative to the total weight of the adsorbent material, and the percentage of metal in the +1 oxidation state in the molecular sieve ascends a 0, 01-2% by weight of the total weight of the molecular sieve, the metal being in oxidation state +1 silver.