Open AccessSelective Crystallization of Silicoalumophosphate Sapo-11 With A Micromesoporous Structure
Author(s) -
Zulfiya R. Fayzullina,
Kanaan R. Ahmed,
Samara Kambarova,
М. Р. Аглиуллин
Publication year - 2021
Publication title -
science journal of university of zakho
Language(s) - English
Resource type - Journals
eISSN - 2663-6298
pISSN - 2663-628X
DOI - 10.25271/sjuoz.2021.9.2.827
Subject(s) - crystallization , molecular sieve , mesoporous material , materials science , scanning electron microscope , chemical engineering , nanocrystal , sieve (category theory) , volume (thermodynamics) , nanotechnology , chemistry , composite material , adsorption , organic chemistry , catalysis , mathematics , thermodynamics , physics , combinatorics , engineering
The authors have proposed a method for the selective crystallization of a SAPO-11 silicoaluminophosphate molecular sieve with a micro-mesoporous structure. It has been shown that crystallization of a silicoaluminophosphate gel, in the preparation of which its isopropoxide is used as a source of aluminum, makes it possible to obtain a SAPO-11 molecular sieve with a specific surface area of ~ 207 m2 / g, a volume of micro- and mesopores of ~ 0.08 and 0.09 cm3 / g. , respectively. Using scanning electron microscopy, it was demonstrated that the crystals of the material are pseudospherical particles ~ 8-10 microns in size, consisting of aggregates of nanocrystals ~ 100-200 nm in size.