논문 해외 국제전문학술지(SCI급) n-Heptane Hydroisomerization over Pt/MFI Zeolite Nanosheets: Effects of Zeolite Crystal Thickness and Platinum Location
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2013-03
- 저자명 Kim, J., Kim, W., Seo, Y., Kim, J.-C., and Ryoo, R.*
- 학술지명 Journal of Catalysis
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 원문 링크 https://www.sciencedirect.com/science/article/abs/pii/S002195171300064X
홈페이지논문 초록 (Abstract)
Platinum was supported on MFI-type (ZSM-5) zeolites with various crystal thicknesses ranging from 300 to 2 nm (i.e., from bulk crystal to nanosheet). Two series of Pt/MFI were prepared by the ion exchange of and the impregnation of colloidal Pt nanoparticles. The ion exchange yielded Pt nanoparticles that were supported inside zeolite pores, whereas the impregnation yielded Pt nanoparticles supported exclusively on the external crystal surfaces. The two series of Pt/MFI were used as catalysts for the hydroisomerization of n-heptane to investigate the effects of zeolite crystal thickness and Pt location. This research showed that the product selectivity to branched isomers could be significantly improved by decreasing zeolite crystal thickness to nanosheets. The selectivity improvement was attributed to short diffusion path lengths for branched products to escape before cracking.