Temperature-programmed desorption vs. N2 desorption in determining pore-size distribution of mesoporous silica molecular sieves

Sridhar Komarneni, V. C. Menon, R. Pidugu, J. Goworek, W. Stefaniak

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Two mesoporous silica molecular sieves, one synthesized by cationic template method and another by neutral template route, were characterized for their pore-size distribution by a novel Temperature-Programmed Desorption (TPD) method and the widely used N2 desorption method. The pore-size distributions determined by the two methods agree quite well and are within experimental errors. For example, TPD method gave a pore-size distribution (radius) centered at 14 Å while N2 desorption method showed a peak centered at 13.3 Å. for the mesoporous silica prepared by cationic template route. The new TPD method based on thermogravimetric analysis is a viable option for mesopore characterization of silica-based materials.

Original languageEnglish (US)
Pages (from-to)115-119
Number of pages5
JournalJournal of Porous Materials
Volume3
Issue number2
DOIs
StatePublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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