Citation: N. Parsafard, M. H. Peyrovi, M. Rashidzadeh. Experimental and kinetic study of n-heptane isomerization on nanoporous Pt-(Re,Sn)/HZSM5-HMS catalysts[J]. Chinese Journal of Catalysis, ;2016, 37(9): 1477-1486. doi: 10.1016/S1872-2067(15)61114-7 shu

Experimental and kinetic study of n-heptane isomerization on nanoporous Pt-(Re,Sn)/HZSM5-HMS catalysts

a. Faculty of Chemistry, Department of Physical Chemistry, University of Shahid Beheshti, Tehran, 1983963113, Iran;
b. Research Institute of Petroleum Industry(RIPI), Tehran, 1485733111, Iran

Received Date: 11 March 2016
Revised Date: 18 April 2016

Pt-(Sn,Re)/HZSM5-HMS catalysts were evaluated for n-heptane isomerization at 200-350℃. To characterize the catalyst, X-ray diffraction, X-ray fluorescene, Fourier transform infrared spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy, temperature-programmed reduction of H₂, temperature-programmed desorption of NH₃, infrared spectroscopy of adsorbed pyridine, H₂ chemisorption, nitrogen adsorption-desorption, scanning electron microscopy and thermogravimetric analysis were performed. Kinetics of n-C₇ isomerization were investigated under various hydrogen and n-C₇ pressures, and the effects of reaction conditions on catalytic performance were studied. The results showed that biand trimetallic catalysts exhibit better performance than monometallic catalysts for this reaction. For example, a maximum i-C₇ selectivity(> 74%) and multibranched isomer selectivity(40%) were observed for Pt-Sn/HZSM5-HMS at 200℃.
- Bimetallic catalyst,
- Trimetallic catalyst,
- n-Heptane isomerization,
- Selectivity,
- Multibranched isomer
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沈阳化工大学材料科学与工程学院沈阳 110142