Vern W. Weekman

Combined effect of volume change and internal heat and mass transfer on gas-phase reactions in porous catalysts

The effect of stoichiometry on nonisothermal gaseous bulk-phase reactions in porous catalyst particles has been treated. The results show that for exothermic reactions volume changes during reaction give effectiveness factors which may differ greatly from those predicted by constant volume theory. Endothermic reactions are relatively insensitive to reaction stoichiometry. The triple solutions noted by Weisz and Hicks are also significantly affected by a change in the number of moles during reaction.