Process for operating equilibrium controlled reactions

摘要

The invention relates to an adsorbent capable of preferentially adsorbing carbon dioxide in a gaseous mixture containing carbon dioxide and an excess of water at a temperature ranging from 200 DEG C to 500 DEG C represented by the formula: ÄMg(l-x) Alx (OH)2ÜÄCO3Üx/2 . y H2O . z M2CO3 wherein 0.09 ≤ x ≤ 0.40; 0 ≤ y ≤ 3.5, 0 ≤ z ≤ 3.5; and M = Na or K. Furthermore the invention relates to an adsorbent capable of preferentially adsorbing carbon dioxide in a gaseous mixture containing carbon dioxide and an excess of water at a temperature ranging from 200 DEG C to 500 DEG C represented by the formula Mg ÄAl2ÜO4 . y K2CO3 wherein 0 ≤ y ≤ 3.5.