AU ALPHA-FE2O3 CATALYST FOR WATER-GAS SHIFT REACTION PREPARED BY DEPOSITION-PRECIPITATION/

A modified version of the preparation methods for the synthesis of hig hly-active Au/alpha-Fe2O3 catalysts for WGS reaction has been proposed . The results obtained show that gold dispersion is highly preserved a nd prevents cluster formation. On the other hand, a major part of gold remains on the surface, thus being accessible to catalysis. As a resu lt of the preparation technique, it seems that the interaction between gold and support is weaker and, likely, more favourable for catalysis . This study demonstrates that a specific approach to preparation of c atalysts of optimum structure and texture is crucial for high-catalyti c activity. (C) 1998 Elsevier Science B.V.