Improved catalytic activity and stability of mesostructured sulfated zirconia by Al promoter

Yinyong Sun, Lina Yuan, Shengqian Ma, Yu Han, Lan Zhao, Wei Wang, Chang Lin Chen, Feng Shou Xiao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Al-promoted mesostructured sulfated zirconia (Al-MSZ-5) has been successfully synthesized from the template of triblock polymer surfactant (P123) in aqueous solution. Mesostructured Al-MSZ-5 shows high thermal stability, and it can preserve its characteristic mesostructures until calcination at 650°C. In contrast, the mesostructure of mesoporous sulfated zirconia (MSZ-5) will be destroyed during calcination at 600°C. Catalytic data for n-butane isomerization show that the Al-MSZ-5 exhibits higher catalytic activity and better stability than both MSZ-5 and conventional Al-promoted sulfated zirconia (Al-SZ). The Al-MSZ-5 sample was characterized by XRD, bright-field and dark-field TEM images, N2 adsorption isotherms, NMR, TG-DTA, IR, and numerous other techniques. The results suggest that Al-MSZ-5 has worm-like mesopores, and that the mesostructured walls contain tetragonal crystalline ZrO2. Such unique structural features might be responsible for the observed large surface area, high catalytic activity for n-butane isomerization, and high thermal stability of mesostructured Al-MSZ-5.

Original languageEnglish (US)
Pages (from-to)17-24
Number of pages8
JournalApplied Catalysis A: General
Volume268
Issue number1-2
DOIs
StatePublished - Aug 10 2004

Keywords

  • Al-promoted
  • Mesostructured
  • Non-ion surfactant
  • Sulfated zirconia
  • n-Butane isomerization

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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