Abstract
Hydroisomerisation of n-heptane has been carried out over six Pt-loaded zeolite-based catalysts. The activity and selectivity of each catalyst under various operating conditions of temperature, pressure and time were studied. Generally, a low pressure and high temperature favoured the overall n-heptane conversion while the selectivity towards isomers decreased at high temperature as the overall conversion increased to a high value. Based on the initial rates, kinetic modelling of the experimental data was carried out using power law kinetics and a simplified dual-site Langmuir-Hinshelwood-Hougen-Watson (LHHW) model. The LHHW approach was found more appropriate in representing the experimental data obtained over each catalyst and a kinetic model equation developed on the basis of surface reaction rate controlling best fitted to the experimental data. The activation energies were found to be in the range 94-143 kJ mol-1.
| Original language | English |
|---|---|
| Pages (from-to) | 177-192 |
| Number of pages | 16 |
| Journal | Progress in Reaction Kinetics and Mechanism |
| Volume | 41 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2016 |
| Externally published | Yes |
Keywords
- Dual-site Langmuir-Hinshelwood-Hougen-Watson model
- Hydroisomerisation
- N-heptane
- Platinum catalyst
- Zeolite
ASJC Scopus subject areas
- Physical and Theoretical Chemistry