Steam-assisted crystallisation of impregnated silica – A novel approach for the synthesis of powdered and granulated binder-free MFI zeolites

Bachurina, D.O.; Kislova, I.A.; Ponomareva, O.A.; Zholobenko, V.L.; Ivanova, I.I.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.

Авторы: Bachurina Daria O., Kislova Iuliia A., Ponomareva Olga A., Zholobenko Vladimir L., Ivanova Irina I.
Журнал: Microporous and Mesoporous Materials
Том: 403
Год издания: 2026
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 114001
DOI: 10.1016/j.micromeso.2025.114001
Аннотация: A novel approach for steam-assisted synthesis of zeolite MFI based on the crystallisation of silica grains impregnated with the aqueous solution containing structure directing template, alkali and a source of aluminum has been developed. Both powdered MFI samples and binder-free MFI catalysts have been prepared using this method. It provides significant advantages over conventional hydrothermal crystallisation allowing for 3-5-fold reduction in water and template consumption, while increasing the zeolite yield and autoclave productivity by a factor of 2–3. Furthermore, the synthesis procedure is virtually waste-free making it more environmentally friendly. The physicochemical properties of the materials obtained have been investigated utilising X-ray diffraction, X-ray fluorescence, scanning electron microscopy, low-temperature nitrogen adsorption, and temperature-programmed ammonia desorption, while their catalytic performance has been evaluated in toluene disproportionation. The data demonstrate that MFI zeolites produced by steam-assisted crystallisation of impregnated silica are comparable in physicochemical and catalytic properties to zeolites obtained by the traditional hydrothermal method, and that binder-free granulated MFI zeolite is a promising catalyst for toluene disproportionation.
Добавил в систему: Жолобенко Владимир Леонидович

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