Catalysis by Mesoporous Molecular Sieves

Čejka, Jiřı́; Vinu, Ajayan

doi:10.1016/b978-0-444-53189-6.00025-1

Cited by 5 publications

(2 citation statements)

References 132 publications

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“…This material combines the synergetic effect of large pores, large surface area and amorphous wall saturated with hydroxyl groups readily available for the generation of active sites needed for catalytic reaction. 39 Hence, ZSM-5 was used. A mesoporous silica support (SiO 2 ) combines a high surface area, thermal stability, tunable surface properties, ease of synthesis, and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Catalytic hydrodeoxygenation of benzoic acid as a bio-oil model compound: reaction and kinetics using nickel-supported catalysts

Yusuf,

Leeke,

Wood

2024

Sustainable Energy Fuels

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Section: Introductionmentioning

confidence: 99%

Catalytic hydrodeoxygenation of benzoic acid as a bio-oil model compound: reaction and kinetics using nickel-supported catalysts

Yusuf,

Leeke,

Wood

2024

Sustainable Energy Fuels

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“…The discovery of ordered mesoporous materials has opened great opportunities for heterogeneous catalysis, − thanks to their larger pore size (2–50 nm), relative to that of microporous zeolite materials. However, because of their poorer hydrothermal stability and lower acid strength compared to zeolites, the mesoporous materials have not achieved wide applications as zeolites in chemical and petroleum industries so far .…”

Section: Introductionmentioning

confidence: 99%

Ordered, Highly Zeolitized Mesoporous Aluminosilicates Produced by a Gradient Acidic Assembly Growth Strategy in a Mixed Template System

et al. 2016

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Tremendous efforts have been made in recent years to synthesize ordered mesoporous zeolite materials due to the accelerating demands of industrial bulky molecule conversion. Here, we develop a novel gradient acidic assembly growth strategy to prepare ordered highly-zeolitized mesoporous aluminosilicate (SBA-16) materials in a mixed template system. This gradient acidic assembly growth strategy can achieve the high zeolitization of mesoporous aluminosilicate walls without any ordering loss of the mesostructure. The resultant highly-zeolitized mesoporous materials, composed of the intergrown zeolite sub-crystal particles (2-3 nm), exhibit high surface area (∼834 m 2 g -1 ) and pore volume (∼0.64 cm 3 g -1 ), typical channel of MFI framework (0.52 nm) and uniform mesopore (∼5.75 nm), respectively. Moreover, these highly-ordered crystallized mesostructures endow them with high exposed active sites and excellent hydrothermal stability, which consequently make their catalytic activities in bulky molecule transformations at least 10 times higher than conventional zeolites or amorphous mesoporous materials. Without the use of any special surfactants, this general synthetic process provides a brand new view for the synthesis and application of highly-crystalline ordered mesoporous materials.

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Zeolites and Other Micro‐ and Mesoporous Molecular Sieves

Mazur

Přech

Čejka

2019

Kirk-Othmer Encyclopedia of Chemical Technology

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Microporous molecular sieves are materials having outstanding impact on science, technology, and industry. The main classes of porous materials discussed here are zeolites, including 2‐D‐layered zeolites and zeolitic architectures with enhanced mass‐transfer properties. Furthermore, zeotypes, ordered mesoporous sieves, and metal‐organic frameworks are described. Traditionally, porous materials are used in many catalytic processes, for sorption, separation, ion exchange, as well as finding new applications in gas storage or drug delivery. This includes both amorphous or nonordered solids with wide pore size distribution as well as those with ordered or crystalline structures having narrow range of pore sizes. The latter have been extensively studied and developed starting with zeolites, which showed extraordinary catalytic performance in hydrocarbon conversions. This encouraged efforts to extend their application and understanding, and also to overcome particular disadvantages, such as limited pore sizes causing diffusion limitations. Moreover, the synthesis of new zeolites and related molecular sieves is of great interest owing to their potential impact on the field. This article reviews the fundamental knowledge on synthesis, characterization, and application of described solids. Finally, some perspectives and directions of the research are discussed, showing constant interests in microporous solids chemistry, especially zeolites.

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Catalysis by Mesoporous Molecular Sieves

Cited by 5 publications

References 132 publications

Catalytic hydrodeoxygenation of benzoic acid as a bio-oil model compound: reaction and kinetics using nickel-supported catalysts

Catalytic hydrodeoxygenation of benzoic acid as a bio-oil model compound: reaction and kinetics using nickel-supported catalysts

Ordered, Highly Zeolitized Mesoporous Aluminosilicates Produced by a Gradient Acidic Assembly Growth Strategy in a Mixed Template System

Zeolites and Other Micro‐ and Mesoporous Molecular Sieves

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