Тип публикации: статья из журнала
Год издания: 2026
Идентификатор DOI: 10.1134/S2070050426700133
Ключевые слова: mesostructured silicate, Sba-15, alumina, texture, structure, morphology
Аннотация: A porous catalyst system based on mesoporous mesostructured silicate SBA-15 was synthesized; the physicochemical properties of the system were studied. Aluminosilicate composites with an SBA-15 mesostructure was synthesized by the cocondensation method at a pH of ~1.5 and an Al/Si molar ratio of 2.5–35%. The synthesized aluminosilicates was characterized by X-ray diffraction, gas adsorption, IR spectroscopy, electron microscopy, and elemental analysis. When the Al/Si ratio was increased during synthesis, a regular decrease in the unit cell parameter from 107.3 to 99.9 Å, the specific surface area from 837 to 699 m2/g, and the pore volume from 0.86 to 0.62 cm3/g was observed. The incorporation of aluminum into the SBA-15 structure was up to 2.6%. Changes in the feed mixture composition had a significant effect on the morphology of aluminosilicate particles; in particular, the thickness of fiber particles increased, while the fiber length remained almost unchanged. The thickened fibers were unstable; at an Al/Si ratio in the initial composition of 35 mol %, the composite particles underwent significant fragmentation.
Журнал: Catalysis in Industry
Выпуск журнала: Т. 18, № 3
Номера страниц: 190-198
ISSN журнала: 20700504
Место издания: Moscow
Издатель: Институт катализа им. Г.К. Борескова СО РАН, Kalvis LLC