n-Heptane isomerization activities of Pt catalyst supported on micro/mesoporous composites

Z Ghaderi; M H Peyrovi; N Parsafard

doi:10.1186/s13065-021-00787-6

n-Heptane isomerization activities of Pt catalyst supported on micro/mesoporous composites

BMC Chem. 2021 Dec 3;15(1):61. doi: 10.1186/s13065-021-00787-6.

Authors

Z Ghaderi¹, M H Peyrovi², N Parsafard³

Affiliations

¹ Department of Physical and Computational Chemistry, Faculty of Chemistry Science and Petroleum, Shahid Beheshti University, 1983963113, Tehran, Iran.
² Department of Physical and Computational Chemistry, Faculty of Chemistry Science and Petroleum, Shahid Beheshti University, 1983963113, Tehran, Iran. m-peyrovi@sbu.ac.ir.
³ Department of Applied Chemistry, Kosar University of Bojnord, North Khorasan, Iran. n-parsafard@kub.ac.ir.

Abstract

Pt loaded on a series of MCM-48 silica and composites with HZSM-5 zeolite, HY zeolite, or TiO₂ has been prepared and studied for n-heptane isomerization reaction at 200-350 °C. The structural characterization, acid distribution, and morphology of these catalysts were characterized by X-ray diffraction, Fourier transform infrared, UV-Vis diffuse reflectance, scanning electron microscope, temperature-programmed desorption of NH₃, and nitrogen adsorption-desorption methods. The results show that these catalysts have a good selectivity to multi branched isomers, while producing low aromatic compounds. Also, these new composite catalysts prove the catalytic stability during the time of reaction. The most desirable results, and significantly higher n-heptane conversion and isomerization selectivity were achieved with Pt/MCM48-HZSM5 catalyst.

Keywords: Catalyst; Catalytic performance; MCM48-HZSM5; n-heptane isomerization.