A novel method for incorporation of heteroatoms into the framework of ordered mesoporous silica materials synthesized in strong acidic media

Yu Han, Feng Shou Xiao*, Shuo Wu, Yinyong Sun, Xiangju Meng, Dongsheng Li, Sen Lin, Feng Deng, Xuanjun Ai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

231 Scopus citations

Abstract

Heteroatoms of Al and Ti are effectively introduced into the framework of ordered mesoporous silica materials (designated as MAS-7 and MTS-9, respectively) in strong acidic media (pH < 0) by a two-step procedure. MAS-7 shows high catalytic activities for the cracking of both small (cumene) and bulky (1,3,5-triisopropylbenzene) molecules because it combines the advantages of both zeolites (strong acidity) and mesoporous materials (large pores). In contrast, Al-SBA-15 samples prepared from both "post-synthesis" and "direct synthesis" present much lower catalytic activities than MAS-7. Furthermore, MTS-9 exhibits very high catalytic activity in phenol hydroxylation by H2O2, giving the phenol conversion of 26%, comparable to TS-1.

Original languageEnglish (US)
Pages (from-to)7963-7966
Number of pages4
JournalJournal of Physical Chemistry B
Volume105
Issue number33
DOIs
StatePublished - Aug 23 2001

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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