Abstract
Zeolite core-zeolite shell synthesis is promising to enhance selective catalysis in the petrochemical industry, yet the complex synthesis poses a challenge. The successful growth of the Na-Y zeolite shell over the ZSM-5 core, producing a nanocrystalline core–shell structure, was achieved by hydrothermal crystallization via a sequential seeding-dissolution-growth route via alkaline-induced desilication of ZSM-5, followed by the addition of silica and alumina precursors to grow nanosized Na-Y crystallites over the ZSM-5 core. The successful fabrication of the core–shell structure was confirmed by different physicochemical characterizations. The optimized core–shell zeolite demonstrated noteworthy characteristics, featuring a high BET surface area of 493 m2g−1 and an external surface area of 195 m2g−1. Further, the material exhibited a connected porous network, contributing to the total pore volume of 0.52 cm3g−1. Such a strategy can be adopted to fabricate other core–shell materials for advancing the catalytic processes.
Original language | English |
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Article number | 135994 |
Journal | Materials Letters |
Volume | 360 |
DOIs | |
State | Published - 1 Apr 2024 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2024 Elsevier B.V.
Keywords
- Composite materials
- Crystal growth
- Nanocrystalline materials
- Porous materials