Crystallization of faujasite Y from seeds dispersed on mesoporous materials

Pérez-Romo, Patricia; Armendáriz‐Herrera, Héctor; Valente, Jaime S.; Guzman-Castillo, Maria de Lourdes; Hernández-Beltrán, F.; Fripiat, J. J.

doi:10.1016/j.micromeso.2010.03.015

Cited by 13 publications

(5 citation statements)

References 21 publications

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“…Hierarchical zeolites that exhibited Y or ZSM‐5 diffraction patterns were composed of recrystallized zeolite nanocrystals that were embedded in a mesoporous phase. Later, this approach was extended to silicalite‐198 and Y zeolites 99. CTAB was also used in the preparation of hierarchical Y zeolite;100 however, nitrogen‐adsorption/desorption analysis did not show the mesopore‐templating effect of the surfactant.…”

Section: Preparation Strategies Of Mesoporous Zeolitesmentioning

confidence: 99%

Realizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking

Li¹,

Valla²,

2013

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What a cracker! Many approaches to mesoporous zeolites have been reported. The preparation of mesoporous zeolite Y, as the most widely used zeolite in catalysis, its properties, and its application in fluid catalytic cracking (FCC) and hydrocracking are reviewed. Finally, the scale‐up and use of mesostrutured zeolite Y on an industrial scale are described, as the first commercial application of hierarchical zeolites.

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Section: Preparation Strategies Of Mesoporous Zeolitesmentioning

confidence: 99%

Realizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking

Li¹,

Valla²,

2013

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“…S1 † ) showed that the alkaline-treated samples except pristine USY zeolite exhibit type IV isotherms, indicating their mesoporous structure. 26 Moreover, it could be seen that the NaOH treated sample showed a little bit lower pore size compared to ammonia treated ones. This could be attributed to the reason that the increase in the silicon dissolution rate in the framework may block the micropore channels to a certain degree.…”

Section: Resultsmentioning

confidence: 98%

Enhanced toluene adsorption/desorption dynamic performances over modified USY zeolites after an aqueous ammonia treatment

et al. 2021

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“…[ 21a,b ] In this same sense, we have developed an original procedure to obtain a solid which combines the microporosity of a well‐crystallized zeolite supported on a mesoporous material. [ 22a,b ]…”

Section: Introductionmentioning

confidence: 99%

“…Hierarchical zeolites represent a feasible solution to transforming large molecules due to shorter diffusional pathlengths within the mesoporous support and closer proximity to the zeolitic acid sites. [ 16a,22b ] For instance, Fernandez et al. [ 23 ] described the usefulness of the hierarchical ZSM‐5 in the isomerization of o ‐xylene, in which a high catalytic activity and improved selectivity could be achieved with these types of materials.…”

Section: Introductionmentioning

confidence: 99%

Upcycling of Municipal Glass and Aluminum Wastes for Synthesis of Hierarchical ZSM‐5

Huerta‐Muñoz

Guzmán‐Castillo

Armendáriz‐Herrera

et al. 2022

CLEAN Soil Air Water

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The synthesis of MFI zeolite is explored through use of recycled aluminum (soda can tabs and aluminum foil) and silicon (crushed bottle glass) wastes, giving rise to highly crystalline ZSM‐5. The effects of impurities from the wastes on crystallinity, particle morphology, surface area, and porosity are studied (electron microscopy, X‐ray diffraction, N2 isotherms at 77 K), and highly crystalline microporousmesoporous MFI structure resulted. t‐plot and mesopore hysteresis trends showed that magnesium or chromium impurities in soda can tabs induce the formation of intracrystalline 2 nm sized supermicropores. Recycled aluminum transformed into pure aluminum hydroxide polymorphs (bayerite and gibbsite) for use with the synthesis gel. Glycerol is used as a green alternative to mineral base solutions to depolymerize powdered glass bottles to form the gel precursor to crystallization. The hydrothermal treatment of this gel with the aluminum foil dissolution, using tetra‐propylammonium bromide (TPABr) as directing agent, formed a hierarchical ZSM‐5 zeolite, in which ZSM‐5 zeolite nanocrystals are supported on an amorphous silico‐aluminate mesoporous material with a pore diameter centered at 4 nm. The upcycling of scrap Al and municipal glass to catalytic‐grade ZSM‐5 can potentially compete with existing processes and imparts positive social and environmental impacts.

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Crystallization of faujasite Y from seeds dispersed on mesoporous materials

Cited by 13 publications

References 21 publications

Realizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking

Realizing the Commercial Potential of Hierarchical Zeolites: New Opportunities in Catalytic Cracking

Enhanced toluene adsorption/desorption dynamic performances over modified USY zeolites after an aqueous ammonia treatment

Upcycling of Municipal Glass and Aluminum Wastes for Synthesis of Hierarchical ZSM‐5

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