Grafting sulfated zirconia on mesoporous silica

Yong Wang, Kwan Young Lee, Saemin Choi, Jun Liu, Li Qiong Wang, Charles H.F. Peden

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


Recently, sulfated zirconia has received considerable attention as a potential solid acid catalyst to replace problematic homogeneous acid catalysts. In this paper, the preparation and properties of acid catalysts obtained by grafting ziconia with atomic precision on MCM-41 mesoporous silica were studied. TEM and potential titration characterizations revealed that ZrO2/MCM-41 with monolayer coverage can be obtained using this grafting technique. Sulfated ZrO2/MCM-41 exhibits improved thermal stability than that of bulk sulfated zirconia, as evidenced by temperature programmed characterizations and XRD analysis. Temperature programmed reaction of isopropanol was used to evaluate the acidity of sulfated ZrO2/MCM-41. It was found that the acid strength of sulfated ZrO2/MCM-41 with monolayer coverage is weaker than bulk sulfated zirconia but stronger than SiO2–Al2O3, a common strong acid catalyst.

Original languageEnglish
Pages (from-to)540-554
Number of pages15
JournalGreen Chemistry
Issue number6
Publication statusPublished - 2007 May 17

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution


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