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Selective hydroisomerization of n-dodecane over platinum supported on zeolites |
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| Authors: | Soyoung Yun Eunok Lee Young-Kwon Park Soon-Yong Jeong Jeongsik Han Byunghun Jeong Jong-Ki Jeon |
| Affiliation: | 1. Department of Chemical Engineering, Kongju National University, Cheonan, 331-717, Korea 2. School of Environmental Engineering, University of Seoul, Seoul, 130-743, Korea 3. Green Chemistry Research Division, Korea Research Institute of Chemical Technology, Daejeon, 305-600, Korea 4. Agency for Defense Development, Yuseong, Daejeon, 305-152, Korea |
| Abstract: | In this study, in order to develop catalysts for the selective isomerization of higher paraffin, the hydroisomerization reaction of n-dodecane was performed as a model reaction. Pt/ZSM-48, Pt/HZSM-5, Pt/HY, and Pt/SAPO-11 were examined for the selective hydroisomerization of n-dodecane. The catalysts were characterized via X-ray powder diffraction, N2 adsorption, and the temperature-programmed desorption of ammonia. Among the catalysts studied, the Pt/HZSM-48 catalyst exhibited the best isomerization selectivity in the hydroisomerization reaction of n-dodecane, which is attributed to the moderate acid sites and medium-sized pores present in the HZSM-48. The highest iso-dodecane yield was obtained at a reaction temperature of 280 °C in the Pt/HZSM-48 catalyst. The optimal selectivity of the n-dodecane hydroisomerization over the Pt/SAPO-11 catalyst was obtained at approximately 300 °C, which was slightly higher than that of the Pt/HZSM-48 catalyst. |
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