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Listar por autor "Paris Carrizo, Cecilia Gertrudis"

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"Ab initio" synthesis of zeolites for preestablished catalytic reactions

Gallego-Sánchez, Eva María; Portilla Ovejero, Mª Teresa; Paris-Carrizo, Cecilia Gertrudis; Leon Escamilla, Efigenio Alejandro; Boronat Zaragoza, Mercedes; Moliner Marin, Manuel; Corma Canós, Avelino (American Association for the Advancement of Science (AAAS), 2017)

[EN] Unlike homogeneous catalysts that are often designed for particular reactions, zeolites are heterogeneous catalysts that are explored and optimized in a heuristic fashion. We present a methodol. for synthesizing ...
A priori control of zeolite phase competition and intergrowth with high-throughput simulations

Schwalbe-Koda, Daniel; Kwon, Soonhyoung; Paris, Cecilia; Bello-Jurado, Estefanía; Jensen, Zach; Olivetti, Elsa; Willhammar, Tom; Corma Canós, Avelino; Román-Leshkov, Yuriy; Moliner Marin, Manuel; Gomez-Bombarelli, Rafael (American Association for the Advancement of Science (AAAS), 2021-10-15)

[EN] Zeolites are versatile catalysts and molecular sieves with large topological diversity, but managing phase competition in zeolite synthesis is an empirical, labor-intensive task. In this work, we controlled phase ...
Cage-based small-pore catalysts for NH3-SCR prepared by combining bulky organic structure directing agents with modified zeolites as reagents

Martín-García, Nuria; Paris, Cecilia; Vennestrom; Peter Nicolai Ravnborg; Thogersen, Joakim Reimer; Corma Canós, Avelino; Moliner Marin, Manuel (Elsevier, 2017)

[EN] It has been possible to efficiently synthesize high-silica ERI and AFX zeolites with nano-sized primary crystallites (30-200 nm). This was achieved by using a dicationic and rigid organic structure directing agent ...
Chemical and Structural Parameter Connecting Cavity Architecture, Confined Hydrocarbon Pool Species, and MTO Product Selectivity in Small-Pore Cage-Based Zeolites

Ferri-Vicedo, Pau; Li, Chengeng; Paris, Cecilia; Vidal Moya, José Alejandro; Moliner Marin, Manuel; Boronat Zaragoza, Mercedes; Corma Canós, Avelino (American Chemical Society, 2019-12-06)

[EN] The catalysts used in the methanol-to-olefins (MTO) reaction are considered dual systems comprising an inorganic zeolite framework and organic compounds hosted inside that act as cocatalysts. The influence of zeolite ...
Conceptual similarities between zeolites and artificial enzymes

Gallego-Sánchez, Eva María; Paris, Cecilia; Cantin Sanz, Angel; Moliner Marin, Manuel; Corma Canós, Avelino (The Royal Society of Chemistry, 2019-09-14)

[EN] By using a Diels-Alder (DA) reaction as a base case, we show that a pure silica zeolite acting as an entropy-trapping scaffold can be synthesized with an organic structure directing agent (OSDA) analogue of the ...
Design and Synthesis of the Active Site Environment in Zeolite Catalysts for Selectively Manipulating Mechanistic Pathways

Li, Chengeng; Ferri-Vicedo, Pau; Paris, Cecilia; Moliner Marin, Manuel; Boronat Zaragoza, Mercedes; Corma Canós, Avelino (American Chemical Society, 2021-07-21)

[EN] By combining kinetics and theoretical calculations, we show here the benefits of going beyond the concept of static localized and defined active sites on solid catalysts, into a system that globally and dynamically ...
Design of bi-functional Ni-zeolites for ethylene oligomerization: Controlling Ni speciation and zeolite properties by one-pot and post-synthetic Ni incorporation

Martínez-Gómez-Aldaraví, Adrián; Paris, Cecilia; Moliner Marin, Manuel; Martínez, Cristina (Elsevier, 2023-10)

[EN] The design of diverse Ni-zeolites has been performed attempting to control different physico-chemical properties of the zeolite supports as well as the Ni speciation to study their influence on the industrially relevant ...
Direct synthesis of the aluminosilicate form of the small pore CDO zeolite with novel OSDAs and the expanded polymorphs

Martínez Franco, Raquel; Paris, Cecilia; Martínez-Triguero, Joaquín; Moliner Marin, Manuel; Corma Canós, Avelino (Elsevier, 2017)

[EN] A general procedure to synthesize the Al-containing layered CDO precursor (PreCDO) is presented, allowing its preparation under broad Si/Al molar ratios by using novel pyrrole-derived organic molecules as organic ...
Discovering Relationships between OSDAs and Zeolites through Data Mining and Generative Neural Networks

Jensen, Zach; Kwon, Soonhyoung; Schwalbe-Koda, Daniel; Paris, Cecilia; Gómez-Bombarelli, Rafael; Román-Leshkov, Yuriy; Corma Canós, Avelino; Moliner Marin, Manuel; Olivetti, Elsa A. (American Chemical Society, 2021-05-26)

[EN] Organic structure directing agents (OSDAs) play a crucial role in the synthesis of micro- and mesoporous materials especially in the case of zeolites. Despite the wide use of OSDAs, their interaction with zeolite ...
Efficient Oligomerization of Pentene into Liquid Fuels on Nanocrystalline Beta Zeolites

Díaz-Rey, Maria Del Rocio; Paris-Carrizo, Cecilia Gertrudis; Martínez Franco, Raquel; Moliner Marin, Manuel; Martínez, Cristina; Corma Canós, Avelino (American Chemical Society, 2017)

[EN] Light alkenes oligomerization, performed in the presence of heterogeneous acid catalysts, is an interesting alternative for the production of clean liquid fuels. The process, when catalyzed by zeolites, is flexible ...
High-silica nanocrystalline Beta zeolites: efficient synthesis and catalytic application

Martínez Franco, Raquel; Paris-Carrizo, Cecilia Gertrudis; Martínez Armero, Marta Evelia; Martínez, Cristina; Moliner Marin, Manuel; Corma Canós, Avelino (The Royal Society of Chemistry, 2015)

[EN] An efficient synthesis methodology to obtain homogeneous nanosized high-silica Beta zeolites ( 10¿20 nm) with high solid yields (above 95%) using simple alkyl-substituted flexible dicationic OSDAs is described. These ...
Making Nanosized CHA Zeolites with Controlled Al Distribution for Optimizing Methanol-to-Olefin Performance

Gallego-Sánchez, Eva María; Li, Chengeng; Paris, Cecilia; Martín-García, Nuria; Martínez-Triguero, Joaquín; Boronat Zaragoza, Mercedes; Moliner Marin, Manuel; Corma Canós, Avelino (John Wiley & Sons, 2018-10-01)

[EN] From theoretical calculations and a rational synthesis methodology, it has been possible to prepare nanocrystalline (60-80 nm) chabazite with an optimized framework Al distribution that has a positive impact on its ...
Metal-containing zeolites as efficient catalyst for the transformation of highly valuable chiral biomass-derived products

Paris Carrizo, Cecilia Gertrudis; Moliner Marin, Manuel; Corma Canós, Avelino (Royal Society of Chemistry, 2013)

Metal-containing zeolites, especially Sn-Beta, perform as very efficient heterogeneous catalysts in the selective oxidation of levoglucosenone, which is considered as a platform chemical for the production of highly-valuable ...
Nanosized MCM-22 zeolite using simple non-surfactant organic growth modifiers: synthesis and catalytic applications

Gallego-Sánchez, Eva María; Paris, Cecilia; Martínez, Cristina; Moliner Marin, Manuel; Corma Canós, Avelino (The Royal Society of Chemistry, 2018-09-14)

[EN] Non surfactant cyclic alkylammonium can selectively decrease the rate of crystal growth along the x-y crystal axes during the synthesis of MWW zeolite. This results in an similar to 60 nm nanocrystalline zeolite that ...
Photocages for protection and controlled release of bioactive compounds

Aparici-Espert, Maria Isabel; Cuquerella Alabort, Maria Consuelo; Paris, Cecilia; Lhiaubet ., Virginie Lyria; Miranda Alonso, Miguel Ángel (The Royal Society of Chemistry, 2016)

[EN] Using a sunscreen-based photocage, we have demonstrated that it is possible to prevent photodegradation of a bioactive compound and to achieve its controlled photorelease. The concept has been proven linking avobenzone, ...
Photochemical reactions of halogenated aromatic 1,3-diketones in solution studied by steady state, one- and two-color laser flash photolyses

Yamaji, Minoru; Suwa, Yuri; Shimokawa, Rieko; Paris, Cecilia; Miranda Alonso, Miguel Ángel (The Royal Society of Chemistry, 2015)

Photochemical processes of 4-tert-butyl-4'-methoxydibenzoylmethane (Avobenzone, AB), 4-phenylbenzoylbenzoyl-, 4-phenylbenzoyl-2'-furanyl- and 4-phenylbenzoyl-2'-thenoylmethanes (PB@Ph, PB@F and PB@T, respectively) substituted ...
Production of aromatics from biomass by computer-aided selection of the zeolite catalyst

Margarit Benavent, Vicente Juan; Gallego, Eva M.; Paris, Cecilia; Boronat Zaragoza, Mercedes; Moliner Marin, Manuel; Corma Canós, Avelino (The Royal Society of Chemistry, 2020-08-07)

[EN] Taking into account that the transformation of biomass-derived 2,5-dimethylfuran (DMF) top-xylene involves Diels-Alder (DA) cycloaddition as the limiting step, the use of an ITQ-2 zeolite obtained by direct synthesis ...
Selective active site placement in Lewis acid zeolites and implications for catalysis of oxygenated compounds

Rodríguez-Fernández, Aida; Di Iorio, John R.; Paris, Cecilia; Boronat Zaragoza, Mercedes; Corma Canós, Avelino; Román-Leshkov, Yuriy; Moliner Marin, Manuel (The Royal Society of Chemistry, 2020-10-07)

[EN] The selective incorporation of isolated framework Lewis acid sites at specific crystallographic positions in high-silica zeolites was achieved by applying a rationalized post-synthetic grafting methodology. The removal ...
Simple organic structure directing agents for synthesizing nanocrystalline zeolites

Gallego-Sánchez, Eva María; Paris-Carrizo, Cecilia Gertrudis; Díaz-Rey, Maria Del Rocio; Martínez Armero, Marta Evelia; Martínez-Triguero, Joaquín; Martínez, Cristina; Moliner Marin, Manuel; Corma Canós, Avelino (The Royal Society of Chemistry, 2017)

[EN] The synthesis of the ZSM-5 and beta zeolites in their nanosized form has been achieved by using simple alkyl-substituted mono-cationic cyclic ammonium cations as OSDA molecules. The particular combination of a cyclic ...
Synthesis of Al-MTW with low Si/Al ratios by combining organic and inorganic structure directing agents

Paris-Carrizo, Cecilia Gertrudis; Martín-García, Nuria; Martínez-Triguero, Joaquín; Moliner Marin, Manuel; Corma Canós, Avelino (Royal Society of Chemistry, 2016)

[EN] A rationalized combination of alkali cations and bulky dicationic organic structure directing agents (OSDAs) has allowed the synthesis of the Al-rich MTW zeolites with Si/Al ratios of similar to 12 and large pore ...