by jasper » 26 September 2018, 09:03
If you follow the article, then I suppose you should use the PFR. In case of the CSTR, double click, show GUI, 'Reactor' will allow you to specify catalyst mass. In case of the PFR, the 'Packing' tab allows to specify the catalyst loading in terms of kg-cat per m3 of reactor. The other parameters in that section are for pressure drop calculations.
Configure the reaction as heterogeneous, then the rate is not per m3 of reactor, but per kg of cat.