Effect of crystallization mode of hydrous zirconia support on the isomerization activity of Pt/WO3-ZrO2

Yueqin Song, Juanjuan Zhang, Yifei Zhang, Xiaolong Zhou, Jin An Wang, Longya Xu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A series of crystalline hydrous zirconia supports were prepared by different methods. The effects of preparation method of crystalline hydrous zirconia on its crystallization mode and the catalytic activity of Pt/WO 3-ZrO2 in n-hexane isomerization were studied. The catalysts were characterized by XRD and Raman spectroscopy, H2-TPR and NH3-TPD in order to investigate the crystalline structure, reduction properties and acidity of the catalyst. The results indicated that the crystallization mode of hydrous zirconia from different preparation methods was closely related to the ambience of the process, which significantly influenced the isomerization activity of Pt/WO3-ZrO2. The crystallization occurring at the surface region of the hydrous zirconia particles led to an inactive Pt/WO3-ZrO2, while the crystallization occurring only inside hydrous zirconia particles led to a catalyst with high activity.

Original languageEnglish
Pages (from-to)79-83
Number of pages5
JournalCatalysis Today
Volume166
Issue number1
DOIs
StatePublished - 30 May 2011
Externally publishedYes

Keywords

  • Crystallization mode
  • Hydrous zirconia
  • Isomerization
  • Platinum
  • Tungstated zirconia

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