Design and synthesis of 3D ordered macroporous ZrO2/Zeolite nanocomposites

Wang, Zhiyong; Al-Daous, Mohammed A.; Kiesel, Elizabeth R.; Li, Fan; Stein, Andreas

doi:10.1016/j.micromeso.2008.11.024

Cited by 16 publications

(15 citation statements)

References 72 publications

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“…691 Moreover, 3D ordered macroporous ZrO 2 /zeolite nanocomposites are also obtained by using hydrothermal treatment of the polyelectrolyte-coated 3D ordered macroporous activated sulfated zirconia in a synthetic solution of zeolite NaY. 692 Zeolitization on some bio-templates with special macroscopic morphologies can result in zeolite-related hierarchically micro-/macroporous materials. Mann et al 693 constructed a hierarchical zeolite fibre by filtrating nanozeolite suspension into bacterial super cellular thread.…”

Section: Hierarchically Micro-macroporous Structuresmentioning

confidence: 99%

Hierarchically porous materials: synthesis strategies and structure design

et al. 2017

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Section: Hierarchically Micro-macroporous Structuresmentioning

confidence: 99%

Hierarchically porous materials: synthesis strategies and structure design

et al. 2017

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“…A typical example of such reactive hard template are mesoporous silica particles. [ 80,90,95,103,138 ]…”

Section: Hierarchical Zeolites: Preparation Concepts and Methodsmentioning

confidence: 99%

Hierarchically‐Ordered Zeolites: A Critical Assessment

Hartmann

Thommes²,

Schwieger

2021

Adv Materials Inter

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Hierarchically‐ordered zeolites have received increasing attention in the last 15 years due to their outstanding properties, which are explored in catalytic reaction with industrial relevance. Up to now, a large number of different synthetic strategies have been reported that allow to introduce an additional meso‐ or macropore system in addition to the intrinsic microporosity of classical zeolites. Thus, hierarchical zeolites combine the intrinsic (catalytic) properties of conventional zeolites with facilitated access and transport via the additional pore system. In this critical review, the various synthesis pathways reported so far are evaluated, several physico‐chemical methods required for in‐depth characterization of the hierarchical pore system are discussed, and selective applications that are or potentially will be of technical relevance are introduced. The present review provides a critical analysis of the present achievements and discusses future opportunities and challenges for the research on hierarchically‐ordered zeolite in particular with respect to their industrial use.

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“…Another inorganic oxide used as macroporous support is zirconia. [ 82 ] Using colloidal crystal templating a sulfonated or tungsten doped three dimensionally ordered macroporous (3DOM) Zirconia was synthesized and then coated with multiple polyelectrolyte layers. The zeolite coating was realized by hydrothermal crystallization of a NaY zeolite on the surface of the ZrO 2 support.…”

Section: Preparation Methods For Hierarchically Structured Zeolites mentioning

confidence: 99%

Preparation and Potential Catalytic Applications of Hierarchically Structured Zeolites with Macropores

Weissenberger

Machoke

Reiprich

et al. 2021

Adv Materials Inter

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Hierarchically structured zeolites can mitigate problems arising from the slow transport in the micropores, such as diffusion limitations. Hence, a manifold of different preparation methods for hierarchical zeolites have been developed over the years and the corresponding zeolites showed superior performance due to enhanced mass transport caused by higher diffusivities in the additional pore system and reduced diffusion path length in the micropores. The dimensions of the additional secondary “transport” pores in these materials is a major factor affecting their diffusion properties and consequently their catalytic performance. Interestingly almost all reports focus on the generation of additional mesopores and study of catalytic performance of mesoporous zeolites. Larger macropores with pore diameters of more than 50 nm, however, have some intrinsic advantages over mesopores that make them very attractive for catalytic applications. In the last years, methods for the preparation of zeolites and zeolite composites with additional macropores have been developed. These developments have brought about a novel and promising class of hierarchically structured materials; zeolites with macropores. This review gives an overview about different preparation routes for zeolites with inter or intra crystalline macropores as well as zeolite composites with macropores and summarizes the first studies regarding catalytic their performance.

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Design and synthesis of 3D ordered macroporous ZrO2/Zeolite nanocomposites

Cited by 16 publications

References 72 publications

Hierarchically porous materials: synthesis strategies and structure design

Hierarchically porous materials: synthesis strategies and structure design

Hierarchically‐Ordered Zeolites: A Critical Assessment

Preparation and Potential Catalytic Applications of Hierarchically Structured Zeolites with Macropores

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