Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 310, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2020.110630
Keywords
Mesoporous material; Tin; MCM-41
Categories
Funding
- National Council for Scientific and Technological Development (CNPq)
- Brazilian Federal Agency for the Improvement of Higher Education (CAPES)
- Brazilian Innovation Agency (FINEP)
- Alagoas Research Foundation (FAPEAL)
- CAPES
- CNPq
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This study successfully synthesized ordered mesoporous silica and mesoporous stannosilicates under mild and non-hydrothermal conditions, and characterized their properties. The results showed that the materials had a high specific surface area and narrow pore size distribution, making them suitable for large-scale production.
This paper describes the synthesis of ordered mesoporous silica MCM-41 and mesoporous stannosilicates Sn-MCM-41, under mild and non-hydrothermal conditions, as well as their characterization. The aim was to explore the influence of the synthesis temperature (25 and 80 degrees C) on the properties of the mesostructured material. A short synthesis time (30 min) and a sol-gel method were employed, with an Si/Sn ratio of 10, using tetraethyl orthosilicate (TEOS) as a source of silica and cetyltrimethyl ammonium bromide (CTAB) as a structure template. To the best of our knowledge, this is the first time that sodium stannate (Na2SnO3) has been employed as an Sn(IV) source in MCM-41 synthesis. The characterization of the materials was performed via several techniques and the results revealed the formation of MCM-41 and Sn-MCM-41 with a high specific surface area and narrow pore size distribution, and there are strong indications that Sn(IV) is inserted in the MCM-41 lattice. This approach represents a significant advance compared to the materials commonly obtained via hydrothermal synthesis with time-consuming procedures and could be easily applied to large-scale production.
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