Effect of external and internal diffusion over Pt-Sn/Al2O3 catalyst in propane MDehydrogenati on

Dehydrogenation of Propane was carried out in a laboratory scaled reactor over an industrial Pt-Sn/Al2O3 catalyst. To obtain proper kinetic data for determination of intrinsic reaction rate, it was necessary to perform experiments in the absence of external and internal mass transfer limitations. Experiments were conducted using catalyst particles of different sizes to investigate internal mass transfer limitations. Feed flow rates were also varied over a wide range, keeping WHSV constant to investigate external mass transfer limitations under reaction conditions. The results were compared with theoretical predictions and good agreement was observed.

Keywords:

Propane Dehydrogenation , Internal and External limitations , Pt-Sn/Al2O3 Catalyst