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Listar por palabra clave "Hierarchical zeolites"

Mostrando ítems 1-8 de 8

Acidity and accessibility studies on mesoporous ITQ-4 zeolite

Verboekend, Danny; Villaescusa Alonso, Luis Angel; Thomas, Karine; Stan, Irina; Pérez-Ramírez, Javier (Elsevier, 2010-07-01)

[EN] Desilication of ITQ-4 (IFR code, 1-dimensional 12-MR channel system of 0.62 nm x 0.72 nm) in aqueous NaOH solutions was practiced in order to produce the zeolite in the hierarchical form, i.e. combining the native ...
Catalytic cracking performance of alkaline-treated zeolite Beta in the terms of acid sites properties and their accessibility

Tarach, K.; Gora-Marek, K.; Tekla, J.; Brylewska, K.; Datka, J.; Mlekodaj, K.; Makowski, W.; Igualada López, María Cristina; Martínez-Triguero, Joaquín; Rey Garcia, Fernando (Elsevier, 2014-04)

The zeolite Beta is considered as a promising additive for FCC catalyst in diesel oil production. In this article, it is shown that hierarchical zeolite Beta obtained by an optimized desilication procedure increases diesel ...
Designing MFI-based catalysts with improved catalyst life for C-3(=) and C-5(=) oligomerization to high-quality liquid fuels

Corma Canós, Avelino; Martínez, Cristina; Doskocil, Eric (Elsevier, 2013)

[EN] Light olefin oligomerization is an important alternative for the production of clean liquid automotive fuels and can be performed in the presence of solid acid catalysts. Among these, medium-pore zeolites, and especially ...
Fine-Tuning of Acidity in Hierarchical Zeolites for the Efficient Prins Cyclization Yielding Florol

Sánchez-Velandia, Julián E.; Kurmach, Mykhailo; Shvets, Oleksiy; Garcia-Baldovi, Hermenegildo; García-Verdugo, Eduardo; Murzin, Dmitry Yu; Shcherban, Nataliya (American Chemical Society, 2024-10-22)

[EN] In this contribution, several hierarchical zeolites comprising mainly Br & oslash;nsted acid sites with different morphologies (nanosheets, nanoparticles, nanorods) were synthesized and applied to the efficient synthesis ...
Hierarchical zeolites TNU-9 and IM-5 as the catalysts for cracking processes

Tarach, Karolina A.; Martínez-Triguero, Joaquín; Valencia Valencia, Susana; Wojciechowska, Kamila; Rey Garcia, Fernando; Góra-Marek, Kinga (Elsevier, 2023-12-05)

[EN] The 10-ring zeolites TNU-9 and IM-5 were obtained by a desilication and evaluated in series of acid-catalysed cracking reactions. n-Decane and 1,3,5-tri-iso-propylbenzene cracking were performed as model reactions, ...
Hydrothermal stability and catalytic performance of desilicated highly siliceous zeolites ZSM-5

Tarach, Karolina A.; Martínez-Triguero, Joaquín; Rey Garcia, Fernando; Góra-Marek, Kinga (Elsevier, 2016-07)

Highly siliceous zeolites, namely MFI type have attracted the great attention due to their higher hydrothermal stability, higher selectivity to organic compounds, and often better catalytic properties in comparison with ...
Recyclable swelling solutions for friendly preparation of pillared MWW-type zeolites

Schwanke, Anderson Joel; Díaz Morales, Urbano Manuel; Corma Canós, Avelino; Pergher, Sibele (Elsevier, 2017)

[EN] We studied the recycling of swelling solution of MWW-type lamellar zeolitic precursor with a Si/Al = 25. Swollen materials were obtained up to a third reuse without any compensation of reactants, pH or decrease of ...
The influence of ethanol-assisted washes to obtain swollen and pillared MWW-type zeolite with high degree ordering of lamellar structure

Schwanke, Anderson Joel; DÍAZ MORALES, URBANO MANUEL; Corma Canós, Avelino; Pergher, Sibele (Elsevier, 2019-02)

[EN] We studied the influence of the ethanol used as a washing solvent for obtaining swollen and pillared MWW topology zeolites with long-range ordering of lamellar structure. The diffractogram results showed that the ...