N2 physisorption measurments were carried out upon four samples of SBA-15 synthesized with increasing amouns of (NH4)2 Fe (SO4)2 6 H2O. All four samples exhibit type IV isotherms with a H1 hysterisis loop between the adsorption and desorption branches. However, Fe-SBA-15 (169) begins to exhibit pseudo H2 behavior due to the less defined onset of capillary condensation in the adsorption branch. Fe-SBA-15 (168), Fe-SBA-15 (1425), and Fe-SBA-15 (1669) share similar plateau pressures, which is reflected in their similar pore volumes. Fe-SBA-15 (999) exhibits a 36 preaperd with (NH4) Fe (SO4)2 6 H2O and was only 21 % below that of SBA-15 control. The remainder of the samples showed VP at lest 77 % below that of the control. Tabulated values for textural properties an be found in table 2.