Template-free synthesis of high degree crystallinity zeolite Y with micro–meso–macroporous structure

Abstract

Template-free synthesis of zeolite Y with hierarchical porous structure.

State of the Art and Perspectives of Hierarchical Zeolites: Practical Overview of Synthesis Methods and Use in Catalysis

“…The material revealed high activity in the multicomponent reaction of propanol with formaldehyde and ammonia toward 3,5-dimethylpyridine with a selectivity of 95%. [311] Nanozeolites and Their Assembly: Regarding zeolite Y nanoassemblies, two noteworthy works have been published that both use a template-free strategy and thus focus on kinetic regulation of the crystallization process. The first work by Ferdov synthesized zeolite Y nanosheet assemblies by repetitive branching of hierarchically arranged FAU nanolayers.…”

Acid Properties of Hierarchical Zeolites Y

“…Travkina et al [10] proposed to generate macro-and mesoporous zeolite Y by modification of granules that contain a mixture of microporous zeolite with kaolin. After calcination, the granules were crystallized in sodium silicate solution, ion-exchanged for NH 4 + , dried, and calcined in dry air.…”

“…One of them was the synthesis of extra-large pore zeolites [5,6]. Another one was the preparation of zeolite nanoparticles [7][8][9] or assembly of zeolitic micrograins producing micro-meso-macroporous structures [10,11]. A very effective way was the synthesis of hierarchical zeolites containing more than one level of pores.…”

Comprehensive Understanding of the Eco‐Friendly Synthesis of Zeolites: Needs of 21st Century Sustainable Chemical Industries

“…The zeolite Beta obtained by using the seed assisted approach has been widely used for different applications such as; gas adsorption [26a] and catalysis. [26b] In addition to Beta zeolite, the other zeolite frameworks such as; ZSM-5, [27] SSZ-13, [28] CHA, [29] NaY, [30] SUZ-4, [31] LEV, [32] and MTW [33] zeolite have also been prepared using the seed-assisted strategy (Table 1, entries [16][17][18][19][20][21][22]. These zeolite frameworks have been explored for different organic transformations and gas separation.…”

“…These zeolite frameworks have been explored for different organic transformations and gas separation. [27][28][29][30][31][32][33] The seed assisted method has also been reported for the synthesis of selective zeolite framework by using the seed of other zeolite frameworks. Xiao et al have reported the selective synthesis of ZSM-34 using a small proportion of zeolite L in the synthesis composition of ZSM-34 (( Table 1, entry 23).…”