Self-condensation of levulinic acid into bio-jet fuel precursors over acid zeolites: Elucidating the role of nature, strength and density of acid sites

Autores: Juarez, P; Lopez-Aguado, C; Paniagua, M; Melero, JA; Mariscal, R; Morales, G

Artículo.
Appl. Catal. A-Gen.. vol: 631. page: 0926-860X.
Fecha: feb-05. 2022.
Doi: 10.1016/j.apcata.2022.118480.

Resumen:
The production of jet-fuel precursors from the aldol-dimerization of levulinic acid (LA) over acid zeolites is presented. Under solventless conditions, high LA conversion with selectivities to LA dimers > 90% are achieved. Chemisorption and spectroscopic [read more]

Arturo Pérez2022-02-05T00:00:00+01:00Categories: Publicaciones 2022|Tags: Chemistry, Physical; Environmental Sciences|

Efficient nickel and copper-based catalysts supported on modified graphite materials for the hydrogen production from formic acid decomposition

Autores: Faroldi, BM; Conesa, JM; Guerrero-Ruiz, A; Rodriguez-Ramos, I

Artículo.
Appl. Catal. A-Gen.. vol: 629. page: 0926-860X.
Fecha: JAN 5. 2022.
Doi: 10.1016/j.apcata.2021.118419.

Resumen:
Ni, Cu and Ni-Cu catalysts supported on high surface area graphite were synthesized by incipient wet impregnation. Also, the effect of doping the graphite support with alkali oxides (Li, Na and K) was studied. The catalysts were tested [read more]

Arturo Pérez2022-01-05T00:00:00+01:00Categories: Publications 2021|Tags: Chemistry, Physical; Environmental Sciences|

Towards full-spectrum photocatalysis: Successful approaches and materials

Authors: Kubacka, A; Caudillo-Flores, U; Barba-Nieto, I; Fernandez-Garcia, M

Article.
Appl. Catal. A-Gen.. vol: 610. page: 0926-860X.
Date: JAN 25. 2021.
Doi: 10.1016/j.apcata.2020.117966.

Abstract:
A main driver in the progress of the photocatalytic field is the development of catalytic materials able to profit from the whole spectrum of the sun. To do it, such materials need to handle efficiently photons of the [read more]

Arturo Pérez2021-01-25T00:00:00+01:00Categories: Publications 2021|Tags: Chemistry, Physical; Environmental Sciences|

Pt-free CoAl2O4 catalyst for soot combustion with NOx/O-2

Authors: Alvarez-Docio, CM; Portela, R; Reinosa, JJ; Rubio-Marcos, F; Granados-Miralles, C; Pascual, L; Fernandez, JF

Article.
Appl. Catal. A-Gen.. vol: 591. page: 0926-860X.
Date: feb-05. 2020.
Doi: 10.1016/j.apcata.2019.117404.

Abstract:
Cobalt aluminate spinel compounds prepared by different methods were characterized in terms of crystalline structure, morphology, textural properties and acidity, and evaluated as catalysts for diesel soot combustion in NOx/O-2 mixtures. The activation [read more]

Arturo Pérez2020-05-28T12:38:39+02:00Categories: Publicaciones 2020|Tags: Chemistry, Physical; Environmental Sciences|

Synergistic effect between CaCl2 and gamma-Al2O3 for furfural production by dehydration of hemicellulosic carbohydrates

Authors: Funez-Nunez, I; Garcia-Sancho, C; Cecilia, JA; Moreno-Tost, R; Perez-Inestrosa, E; Serrano-Cantador, L; Maireles-Torres, P

Article.
Appl. Catal. A-Gen.. vol: 585. page: 0926-860X.
Date: sept-05. 2019.
Doi: 10.1016/j.apcata.2019.117188.

Abstract:
gamma-Al2O3 has successfully been used as solid acid catalyst for xylose dehydration in a water:toluene biphasic system. The addition of alkaline earth metal chlorides improved the partition coefficient, thus facilitating the extraction of [read more]

Arturo Pérez2019-09-05T18:23:00+02:00Categories: Publicaciones 2019|Tags: Chemistry, Physical; Environmental Sciences|

Pt-free CoAl2O4 catalyst for soot combustion with NOx/O-2

Authors: Alvarez-Docio, CM; Portela, R; Reinosa, JJ; Rubio-Marcos, F; Granados-Miralles, C; Pascual, L; Fernandez, JF

Article.
Appl. Catal. A-Gen.. vol: 591. page: 0926-860X.
Date: feb-05. 2020.
Doi: 10.1016/j.apcata.2019.117404.

Abstract:
Cobalt aluminate spinel compounds prepared by different methods were characterized in terms of crystalline structure, morphology, textural properties and acidity, and evaluated as catalysts for diesel soot combustion in NOx/O-2 mixtures. The activation [read more]

Arturo Pérez2019-02-05T00:00:00+01:00Categories: Publicaciones 2019|Tags: Chemistry, Physical; Environmental Sciences|

Synthesis of mesoporous-zeolite materials using Beta zeolite nanoparticles as precursors and their catalytic performance in m-xylene isomerization and disproportionation

Authors: Chaida-Chenni, FZ; Belhadj, F; Casas, MSG; Marquez-Alvarez, C; Hamacha, R; Bengueddach, A; Perez-Pariente, J

Article.
Appl. Catal. A-Gen.. vol: 568. page: 0926-860X.
Date: nov-25. 2018.
Doi: 10.1016/j.apcata.2018.10.005.

Abstract:
Hierarchical Beta nanozeolites with the properties of both Beta nanozeolite and mesoporous material were prepared by two different methods: (1) Direct Hydrothermal Method (DHM) by the assembly of nanocrystals of preformed Beta seeds [read more]

Arturo Pérez2018-11-25T20:18:00+01:00Categories: Publicaciones 2018|Tags: Chemistry, Physical; Environmental Sciences|

Optimization of ruthenium based catalysts for the aqueous phase hydrogenation of furfural to furfuryl alcohol

Authors: Ramirez-Barria, C; Isaacs, M; Wilson, K; Guerrero-Ruiz, A; Rodriguez-Ramos, I

Article.
Appl. Catal. A-Gen.. vol: 563. page: 0926-860X.
Date: AUG 5. 2018.
Doi: 10.1016/j.apcata.2018.07.010.

Abstract:
The catalytic performance of a series of 4 wt.% Ru-based catalysts in the aqueous-phase hydrogenation of furfural (FAL) to furfuryl alcohol (FOL) has been studied in a batch reactor under very mild conditions of 20 degrees [read more]

Arturo Pérez2018-08-05T20:18:00+02:00Categories: Publicaciones 2018|Tags: Chemistry, Physical; Environmental Sciences|

Selective production of furfuryl alcohol from furfural by catalytic transfer hydrogenation over commercial aluminas

Authors: Lopez-Asensio, R; Cecilia, JA; Jimenez-Gomez, CP; Garcia-Sancho, C; Moreno-Tost, R; Maireles-Torres, P

Article.
Appl. Catal. A-Gen.. vol: 556. page: 0926-860X.
Date: APR 25. 2018.
Doi: 10.1016/j.apcata.2018.02.022.

Abstract:
Three commercial aluminas (gamma-Al2O3) have been evaluated as inexpensive catalysts in the Meerwein-Ponndorf-Verley (MPV) reaction to reduce furfural (FUR) to furfuryl alcohol (FOL), using isopropanol (i-Pr-OH), 2-butanol (2-bu-OH) and cyclohexanol (CH-OH) as sacrificing alcohol [read more]

Arturo Pérez2018-04-25T20:18:00+02:00Categories: Publicaciones 2018|Tags: Chemistry, Physical; Environmental Sciences|

Measuring and interpreting quantum efficiency of acid blue 9 photodegradation using TiO2-based catalysts

Authors: Caudillo-Flores, U; Munoz-Batista, MJ; Kubacka, A; Zarate-Medina, J; Cortes, JA; Fernandez-Garcia, M

Article.
Appl. Catal. A-Gen.. vol: 550. page: 0926-860X.
Date: JAN 25. 2018.
Doi: 10.1016/j.apcata.2017.10.016.

Abstract:
A series of highly-active catalysts were obtained from the same precursor and calcined at different temperatures to generate single-phase anatase and anatase-rutile composite powders. Performance of the catalysts was compared with the P25 reference [read more]

Arturo Pérez2018-01-25T20:18:00+01:00Categories: Publicaciones 2018|Tags: Chemistry, Physical; Environmental Sciences|

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