Cómbita Merchán, Diego Fernando(Universitat Politècnica de València, 2012-01-25)
La necesidad de procesar crudos cada vez más pesados y con concentraciones mayores de contaminantes exige estudiar su influencia sobre los procesos empleados en el refino del petróleo. El proceso de FCC (Fluid Catalytic ...
[EN] The increasing environmental concern and promotion of “green processes” are forcing the substitution of traditional acid and base homogeneous catalysts by solid ones. Among these heterogeneous catalysts, zeolites and ...
Martínez Armero, Marta Evelia; Moliner Marin, Manuel; Sastre Navarro, German Ignacio; Rey Garcia, Fernando; Martínez, Cristina; Corma Canós, Avelino(Elsevier, 2016-01)
[EN] ITQ-39, a multipore zeolite with interconnected 12- and 10-ring channel systems, effectively catalyzes the alkylation of two low value naphtha fractions for the production of diesel range alkylaromatics. A catalytic ...
Boronat Zaragoza, Mercedes; Martínez, Cristina; Corma Canós, Avelino(The Royal Society of Chemistry, 2011)
[EN] The activity and selectivity towards carbonylation presented by Bronsted acid sites located inside the 8MR pockets or in the main 12MR channels of mordenite is studied by means of quantum-chemical calculations, and ...
[EN] Fluidized Catalytic cracking (FCC) is one of the main conversion processes in conventional refineries and employs a multicomponent catalyst with Y zeolite as the main source of activity and selectivity towards value ...
[EN] The hydrogenation activity and physico-chemical characterization of a series of NiMo catalyst supported on materials with different acid-base properties (Al2O3, layered double hydroxides-derived MgAl oxides and MgO) ...
[EN] In the last few years, important efforts have been made to synthesize so-called "multipore" zeolites, which contain channels of different dimensions within the same crystalline structure. This is a very attractive ...
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 ...
Portilla Ovejero, Mª Teresa; Llopis Alonso, Francisco; Martínez, Cristina(Royal Society of Chemistry, 2015)
[EN] Non-oxidative methane aromatization is an attractive direct route for producing higher hydrocarbons. It is highly selective to benzene despite the low conversion due to thermodynamic limitations, and Mo/H-ZSM-5, the ...
Díaz Rey, María del Rocío(Universitat Politècnica de València, 2017-01-16)
[EN]
Ensuring energy availability, the higher fuel demand and
environmental concern, coupled with the interest in the comprehensive
utilization of oil, has generated an increasing research for new processes
focused on ...
[EN] Upgrading of the heavy reformate fraction (HR), containing mainly C9+ aromatics, is usually performed by dealkylation or by transalkylation with added benzene and/or toluene to obtain the more valuable xylenes. However, ...
Tempelman, Christiaan H. L.; Portilla Ovejero, Mª Teresa; Martínez Armero, Marta Evelia; Mezari, Brahim; de Caluwe, Niek G. R.; Martínez, Cristina; Hensen, Emiel J. M.(Elsevier, 2016-01-15)
[EN] Nano-crystalline MCM-22 zeolite was synthesized in a one-pot procedure by the use of an organosilane (dimethyl-octadecyl-(3-trimethoxysilylpropyl)-ammonium chloride, TPOAC) in the zeolite synthesis gel. This crystal ...
Díaz Rey, María del Rocío(Universitat Politècnica de València, 2023-04-18)
[ES] El aumento constante en la demanda de combustibles sumado a la crisis energética actual derivada de una escasez global de combustibles, y agravada por la suma de consecuencias de la pandemia COVID-19, la guerra de ...
Del Campo Huertas, Pablo; Navarro Villalba, Mª Teresa; Shaikh, Sohel K.; Khokhar, Munir D.; Aljumah, Furqan; Martínez, Cristina; Corma Canós, Avelino(American Chemical Society, 2020-10-16)
[EN] Among the possible on-purpose technologies for propene production, direct conversion of butene-rich fractions to propene represents an attractive alternative to conventional routes such as steam cracking or fluid ...
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 ...
Martínez, Cristina; Verboekend, Danny; Pérez-Ramírez, Javier; Corma Canós, Avelino(Royal Society of Chemistry, 2013)
Hierarchical USY zeolites obtained by scalable and affordable post-synthetic modifications (PSM) are stabilized by means of REO ion exchange and/or hydrothermal treatments, leading to FCC catalysts with improved hydrothermal ...
[EN] Porous materials such as zeolites contain well-defined pores in molecular dimensions and have important industrial
applications in catalysis, sorption and separation. Aluminosilicates with intersecting 10- and 12-ring ...
[EN] TNU-9 is a medium pore zeolite with a complex tridimensional channel system. Its catalytic properties have been studied in some reactions that involve the BTX fraction, such as benzene and toluene alkylation with ...
In the last years, the preparation of small pore zeolites, especially those presenting large cavities in their structure, have received much attention because they have shown excellent application in catalysis (such as ...