Effect of Fe Ion-Exchanged BEA Zeolite Catalysts on N₂O Decomposition Reaction Following Heat-treatment Temperatures

The effect of heat-treatment temperature on the activity of catalysts was studied by investigating N₂O decomposition reaction in Fe ion-supported BEA Zeolite. As a result of N₂O decomposition reaction experiment, N₂O decomposition activity significantly decreased as heat-treatment temperature of Fe/BEA catalyst increased. the shape and size of the particles of Fe/BEA catalyst following the rise of heat-treatment temperature did not display a significant change. But following the rise of the heat-treatment temperature, its surface area was significantly reduced. Also it was confirmed that as the heat-treatment temperature rose, the crystallization of β structure was greatly reduced. And as heat-treatment temperature rose, while SiO structure either increased or did not exhibit much change, the structure of Fe bonded with lattice structure was speculated to decrease. From the stated results, it was concluded that the increase of heat-treatment temperature became the cause of the declined activity of catalysts by destruction of its β structure of bonding aluminium and Fe atoms