Catalytic behavior of alumina-promoted sulfated zirconia supported on mesoporous silica in butane isomerization

Chang Lin Chen, Tao Li, Soofin Cheng, Nanping Xu, Chung Yuan Mou

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Alumina-promoted sulfated zirconia was supported on mesoporous molecular sieves of pure-silica MCM-41 and SBA-15. The catalysts were prepared by "direct impregnation" of metal sulfate onto the as-synthesized MCM-41 and SBA-15 materials, followed by solid state dispersion and thermal decomposition. Measurements of XRD and nitrogen adsorption isotherms showed that the structures of resultant materials retain well-ordered pores, even with ZrO2 loading as high as 50 wt%. The characterization results indicated that most of the promoted sulfated zirconia were well dispersed on the internal surface of the ordered mesopores. The catalytic behavior of the alumina-promoted sulfated zirconia supported on mesoporous silica was studied in n-butane isomerization. The supports of mesoporous structures led to high dispersion of sulfated zirconia in the meta-stable tetragonal phase, which was the catalytic active phase. The high performance of alumina-promoted catalysts was ascribed to the sulfur retention by alumina.

Original languageEnglish
Pages (from-to)223-229
Number of pages7
JournalCatalysis Letters
Volume78
Issue number1-4
DOIs
Publication statusPublished - Mar 2002
Externally publishedYes

Keywords

  • Alumina
  • Isomerization of butane
  • MCM-41
  • Mesoporous silica
  • SBA-15
  • Sulfated zirconia

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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