Kinetic investigation of Pt@Al-HZSM5/HMS catalyst in nheptane isomerization reaction

Kinetics of n-heptane isomerization over a Pt@Al-HZSM5/HMS catalyst was investigated at 200 oC. The reaction was carried out in a flow reactor in the presence of added hydrogen at flow rates ranging from 20 to 45 mL min-1, and n-heptane at flow rates ranging from 2 to 4.5 mL h-1. Two kinetic models have been selected and tested to describe the kinetics of this process. Results showed that the power law model was not enough to represent the kinetics of n-heptane isomerization over this catalyst. On the contrary, the model based on theLangmuir-Hinshelwood mechanism provided a good fit (R2=0.99) towards the experimental data and allowed to determine the kinetic parameters

Keywords:

Kinetics , Isomerization , Pt@Al-HZSM5/HMS , Power law , Langmuir-Hinshelwood.