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Received April 3, 2010
Accepted June 30, 2010
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Dehydrogenation of isobutane over Sn/Pt/Na-ZSM-5 catalysts: The effect of SiO2/Al2O3 ratio, amount and distribution of Pt nanoparticles on the catalytic behavior
1Biomaterials Group, Department of Materials Engineering, Isfahan University of Technology, Isfahan, I. R. Iran 2Fadak Chemical Company, Isfahan Science & Technology Town (ISTT), Isfahan, I. R. Iran 3Department of Chemistry, Islamic Azad University, Shahreza Branch, Isfahan, I. R. Iran 4Chemical Processes Research Department, Engineering Research Center, University of Isfahan, Isfahan, I. R. Iran 5Faculty of Advanced Sciences & Technologies, University of Isfahan, Isfahan 81746-73441, I. R. Iran
Korean Journal of Chemical Engineering, February 2011, 28(2), 370-377(8), 10.1007/s11814-010-0369-2
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Abstract
Sn/Pt/Na-ZSM-5 was used as catalyst for the dehydrogenation of isobutane, and the effect of SiO2/Al2O3 ratio and the dispersion of Pt nanoparticles on the conversion and product selectivity were studied under atmospheric pressure at 848 K. The catalysts were characterized by various techniques such as H2 chemisorption, TEM, SEM, EDX, XRD, FT-IR, TG/DTG, elemental analysis by XRF and ICP techniques. Higher dispersion of Pt nanoparticles in the catalyst with SiO2/Al2O3 ratio of 40 resulted in higher selectivity for isobutene.
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References
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Cortright RD, Hill JM, Dumesic JA, Catal. Today, 55(3), 213 (2000)
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Rayalu SS, Udhoji JS, Meshram SU, Naidu RR, Devotta S, Curr. Sci., 89, 2147 (2005)
Stojkovic SR, Adnadjevic B, Zeolites., 6, 523 (1988)
Bhattacharya A, Das J, Mitra S, Roy SK, J. Chem. Technol.Biotechnol., 54, 399 (1992)
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