Selective hydroisomerization of n-dodecane over platinum supported on zeolites

Soyoung Yun, Eunok Lee, Young Kwon Park, Soon Yong Jeong, Jeongsik Han, Byunghun Jeong, Jong Ki Jeon

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15 Scopus citations


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.

Original languageEnglish
Pages (from-to)1215-1223
Number of pages9
JournalResearch on Chemical Intermediates
Issue number9
StatePublished - Nov 2011


  • Dodecane
  • HZSM-48
  • Hydroisomerization
  • Pt
  • SAPO-11


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