The influence of CTAB/Si ratio on the textural properties of MCM-41 prepared from sodium silicate

E. V. Vyshegorodtseva, Yu V. Larichev, G. V. Mamontov

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The article deals with the synthesis of mesoporous ordered material MCM-41 from sodium silicate. The series of MCM-41 materials are prepared from industrial sodium silicate using cetyltrimethylammonium bromide (CTAB) as a template and characterized by N2 physisorption and small-angle X-Ray scattering. The MCM-41 sample prepared from the sodium silicate is characterized by high values of specific surface area (1118–1513 m2/g), pore volumes (0.81–0.96 cm3/g), and a well-ordered structure. It was found that the primary assembly of the ordered MCM-41 structure occurs in the solution at room temperature and the MCM-41 may be prepared from the sodium silicate even without hydrothermal treatment. The MCM-41 with a well-ordered structure and a narrow pore size distribution may be synthesized even at a very low CTAB/Si ratio of 0.025–0.125. The MCM-41 prepared from the sodium silicate is stable up to 700 °C and the specific surface area and pore volume were decreased only after the calcination at 800 °C. Thus, the MCM-41 synthesized from the sodium silicate at low CTAB/Si ratio is a promising cheap material for sorption, catalysis and other applications. [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)496-505
Number of pages10
JournalJournal of Sol-Gel Science and Technology
Volume92
Issue number2
DOIs
Publication statusPublished - 1 Nov 2019

Keywords

  • CTAB/Si ratio
  • MCM-41
  • Mesoporous silica
  • Sodium silicate
  • Well-ordered structure

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