Open AccessDesign of SiO2 materials with hierarchical structure as promising supports for catalysts
Author(s) -
A. V. Zubkov,
E. V. Vyshegorodtseva,
Tatiana Bugrova,
G. V. Mamontov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1611/1/012040
Subject(s) - mesoporous material , macropore , materials science , chemical engineering , mcm 41 , hydrothermal circulation , scanning electron microscope , catalysis , dissolution , adsorption , silicate , specific surface area , bromide , nanotechnology , composite material , chemistry , inorganic chemistry , organic chemistry , engineering
The silicate support with a hierarchical structure based on diatomite and MCM-41 is synthesized. The MCM-41 is formed directly on the surface of diatomite and from the diatomite itself without the use of additional silica precursors. The structure of the synthesized samples is characterized by the low-temperature nitrogen adsorption and scanning electron microscopy (SEM). It was shown that hydrothermal treatment of diatomite with NaOH and cetyltrimethylammonia bromide leads to the partial dissolving of diatomite with self-assembly of MCM-41 fragments inside diatomite pores. The developed approach has demonstrated the opportunity to obtain the supports based on diatomite and MCM-41 that are characterized by a hierarchical structure (macropores of diatomite with size of 10-500 nm and mesopores of MCM-41 with size of 3-4 nm) and a high specific surface area that is promising for their application as supports for catalysts.