Synthesis and application of core-shell, hollow, yolk-shell multifunctional structure zeolites

• Published in: Microporous and mesoporous materials 2023-12, Vol.362, p.112766, Article 112766
• Main Authors: Wang, Wei, He, Lei, Luo, Qunxing, Wang, Linyang, Wang, Jing, Chen, Huiyong, Miao, Zongcheng, Yao, Qiuxiang, Sun, Ming
• Format: Article
• Language: English
• Subjects: Design strategy; Multifunctionality; Thermal catalysis; Zeolite-related; “Core and shell concept” particles
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2023.112766

Researches in the synthesis of zeolite molecular sieves main focus on manipulating the properties of zeolite particles by adjusting their size, composition and morphology. Especially, the “core and shell concept” particles, which realize the integration of two or more functions into a single geometric shape, have been extensively studied. The “core and shell concept” particles related to zeolite are synthesized with core-shell structure, hollow structure, and yolk-shell structure through bottom-up and top-down methods. The multifunctionality of a single material is achieved through the formation of multiple shells and the manipulation of core or shell materials. This article presents novel design strategies for numerous zeolite-related “core and shell concept” particles, being introduced to the study of their application among conventional thermal catalysis. However, the high cost associated with preparing such catalysts and the need for deeper research into their application present significant challenges. The “core and shell concept” encompasses three types of materials: core-shell, hollow, and Yolk-shell structures. This paper provides a detailed introduction to the design strategy of zeolite-related “core and shell concept” particles and its application in the field of traditional catalysis, and discusses the prospects of this field. [Display omitted] •Reviewed the conventional preparation of “core and shell concept” zeolite-based catalysts.•Elucidation of the anti-sintering mechanism of “core and shell concept” materials.•Exposition of the hollow and Yolk-shell mechanism of Oswald ripening preparation.•Hollow zeolite and yolk-shell zeolite is mostly MFI structure zeolite and practical application is few.•Summarizes the research and development trends in the past five years.