Synthesis of Si-based mesoporous materials with different structural regularity

Lifang Chen, Jesus López, Jin An Wang, Luis E. Noreña, Guoxian Yu, Fahai Cao, Yueqing Song, Xiaolong Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Two types of mesoporous Si-MCM-41 materials were synthesized via a cationic surfactant template method using different Si-precursors. The materials obtained were characterized by FTIR, XRD, BET, TEM and 29Si MAS-NMR techniques. When fumed silica was used as Si precursor, a Si-MCM-41-I solid with wormhole-like pore topologies was obtained. However, when tetraethylorthosilicate (TEOS) was used as Si precursor, a mesoporous Si-MCM-41-II solid with hexagonal arranges and a long-range ordered structure could be obtained. These two kinds of mesoporous materials had a uniform pore size distribution with an average pore diameter within 2.3-2.8 nm. Rather weak Lewis acid sites were formed on both the Si-MCM-41 samples prepared by the two methods.

Original languageEnglish
Title of host publicationAdvances in New Catalytic Materials
Pages38-44
Number of pages7
DOIs
StatePublished - 2010
Externally publishedYes
Event2nd International Symposium on New Catalytic Materials, NCM-2 - Cancun, Mexico
Duration: 16 Aug 200920 Aug 2009

Publication series

NameAdvanced Materials Research
Volume132
ISSN (Print)1022-6680

Conference

Conference2nd International Symposium on New Catalytic Materials, NCM-2
Country/TerritoryMexico
CityCancun
Period16/08/0920/08/09

Keywords

  • Fumed silica
  • Si-MCM-41
  • Structure ordering
  • Surface acidity
  • TEOS
  • Textural property

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