@article { author = {Peyrovi, Mohammad Hasan and Parsafard, Nastaran and Sajedi, Amir}, title = {Normal Heptane Reforming of Promoted Platinum Composite Catalysts: Preparation, Characterization and Catalytic Performance}, journal = {Journal of Sciences, Islamic Republic of Iran}, volume = {31}, number = {1}, pages = {25-31}, year = {2020}, publisher = {University of Tehran}, issn = {1016-1104}, eissn = {2345-6914}, doi = {10.22059/jsciences.2019.275092.1007368}, abstract = {Pt/Zr(x)-HMS/HZSM-5 catalysts with different ratios of Silicium/Zirconium (denoted as x) were studied for normal heptane reforming at 350-450 °C temperature range. For this purpose, the properties of the catalysts such as X-ray diffraction, X-ray fluorescence, Fourier-transform infrared spectroscopy, Ultraviolet–visible diffuse reflectance spectroscopy, NH3-temperature programmed desorption, H2 chemisorption, N2 adsorption-desorption, and thermal gravimetric analysis were used. The results show that the produced Pt/Zr(x)-HMS/HZSM-5 catalysts have highly efficient performance for n-heptane reforming with a high isomers selectivity up to 69.4% (mono branched isomers = 31.8% and multi branched isomers = 37.6%) and a good selectivity to aromatic compounds (especially toluene = 6.9%), in spite of an appropriate selectivity to light products. It was revealed that the proper structure of these catalysts facilitates the reforming of n-heptane. According to these results, Pt/Zr(35)-HMS/HZSM-5 catalyst showed the favorable properties for this investigated catalytic process.}, keywords = {Normal Heptane reforming,Pt/Zr(x)-HMS/HZSM-5,Isomers selectivity,toluene}, url = {https://jsciences.ut.ac.ir/article_74799.html}, eprint = {https://jsciences.ut.ac.ir/article_74799_e47b5da0a13e8861f415b117d873a303.pdf} }